Navigation Act 1912

Act No. 4 of 1913 as amended

This compilation was prepared on 16 October 2008
taking into account amendments up to Act No. 94 of 2008

Volume 3 includes: Table of Contents
Schedules 2–9

The text of any of those amendments not in force
on that date is appended in the Notes section

The operation of amendments that have been incorporated may be
affected by application provisions that are set out in the Notes section

 

 

 

Contents

Schedule 2—Protocol of 1978 relating to the International Convention for the Safety of Life at Sea, 1974             

ARTICLE I

ARTICLE II

ARTICLE III

ARTICLE IV

ARTICLE V

ARTICLE VI

ARTICLE VII

ARTICLE VIII

ANNEX 

MODIFICATIONS AND ADDITIONS TO THE INTERNATIONAL CONVENTION FOR THE SAFETY OF LIFE AT SEA, 1974

CHAPTER I

GENERAL PROVISIONS

PART A—APPLICATION, DEFINITIONS, ETC.

Regulation 2

PART B—SURVEYS AND CERTIFICATES

Regulation 6

Regulation 7

Regulation 8

Regulation 10

Regulation 11

Regulation 14

Regulation 19

CHAPTER II–1

CONSTRUCTION—SUBDIVISION AND STABILITY, MACHINERY AND ELECTRICAL INSTALLATIONS

PART A—GENERAL

Regulation 1

Regulation 2

PART C—MACHINERY AND ELECTRICAL INSTALLATIONS

Regulation 29

CHAPTER II–2

CONSTRUCTION—FIRE PROTECTION, FIRE DETECTION AND FIRE EXTINCTION

PART A—GENERAL

Regulation 1

Regulation 3

PART E—FIRE SAFETY MEASURES FOR TANKERS

Regulation 55

Regulation 60

CHAPTER V

SAFETY OF NAVIGATION

Regulation 12

Regulation 19

Regulation 191

Regulation 192

APPENDIX

Schedule 3—Convention on the International Regulations for Preventing Collisions at Sea, 1972

ARTICLE I

ARTICLE II

ARTICLE III

ARTICLE IV

ARTICLE V

ARTICLE VI

ARTICLE VII

ARTICLE VIII

ARTICLE IX

INTERNATIONAL REGULATIONS FOR PREVENTING COLLISIONS AT SEA, 1972

PART A—GENERAL

RULE 1 

RULE 2 

RULE 3 

PART B—STEERING AND SAILING RULES

SECTION I—CONDUCT OF VESSELS IN ANY CONDITION OF VISIBILITY

RULE 4 

RULE 5 

RULE 6 

RULE 7 

RULE 8 

RULE 9 

RULE 10

SECTION II—CONDUCT OF VESSELS IN SIGHT OF ONE ANOTHER

RULE 11

RULE 12

RULE 13

RULE 14

RULE 15

RULE 16

RULE 17

RULE 18

SECTION III—CONDUCT OF VESSELS IN RESTRICTED VISIBILITY

RULE 19

PART C—LIGHTS AND SHAPES

RULE 20

RULE 21

RULE 22

RULE 23

RULE 24

RULE 25

RULE 26

RULE 27

RULE 28

RULE 29

RULE 30

RULE 31

PART D—SOUND AND LIGHT SIGNALS

RULE 33

RULE 34

RULE 35

RULE 36

RULE 37

PART E—EXEMPTIONS

RULE 38

ANNEX I

POSITIONING AND TECHNICAL DETAILS OF LIGHTS AND SHAPES

ANNEX II

ADDITIONAL SIGNALS FOR FISHING VESSELS FISHING IN CLOSE PROXIMITY

ANNEX III

TECHNICAL DETAILS OF SOUND SIGNAL APPLIANCES

ANNEX IV

DISTRESS SIGNALS

Schedule 4—Articles of, and Annexes to, the Load Line Convention

ARTICLE 1

ARTICLE 2

ARTICLE 3

ARTICLE 4

ARTICLE 5

ARTICLE 6

ARTICLE 7

ARTICLE 8

ARTICLE 9

ARTICLE 10

ARTICLE 11

ARTICLE 12

ARTICLE 13

ARTICLE 14

ARTICLE 15

ARTICLE 16

ARTICLE 17

ARTICLE 18

ARTICLE 19

ARTICLE 20

ARTICLE 21

ARTICLE 22

ARTICLE 23

ARTICLE 24

ARTICLE 25

ARTICLE 26

ARTICLE 27

ARTICLE 28

ARTICLE 29

ARTICLE 30

ARTICLE 31

ARTICLE 32

ARTICLE 33

ARTICLE 34

ANNEX I

REGULATIONS FOR DETERMINING LOAD LINES

CHAPTER I.—GENERAL

Regulation 1

Regulation 2

Regulation 3

Regulation 4

Regulation 5

Regulation 6

Regulation 7

Regulation 8

Regulation 9

CHAPTER II.—CONDITIONS OF ASSIGNMENT OF FREEBOARD

Regulation 10

Regulation 11

Regulation 12

Regulation 13

Regulation 14

Regulation 15

Regulation 16

Regulation 17

Regulation 18

Regulation 19

Regulation 20

Regulation 21

Regulation 22

Regulation 23

Regulation 24

Regulation 25

Regulation 26

CHAPTER III.—FREEBOARDS

Regulation 27

Regulation 28

Regulation 29

Regulation 30

Regulation 31

Regulation 32

Regulation 33

Regulation 34

Regulation 35

Regulation 36

Regulation 37

Regulation 38

Regulation 39

Regulation 40

CHAPTER IV.—SPECIAL REQUIREMENTS FOR SHIPS ASSIGNED TIMBER FREEBOARDS

Regulation 41

Regulation 42

Regulation 43

Regulation 44

Regulation 45

ANNEX II

ZONES, AREAS AND SEASONAL PERIODS

Regulation 46

Regulation 47

Regulation 48

Regulation 49

Regulation 50

Regulation 51

Regulation 52

ANNEX III

CERTIFICATES

Schedule 5—International Convention for Safe Containers

ARTICLE I

ARTICLE II

ARTICLE III

ARTICLE IV

ARTICLE V

ARTICLE VI

ARTICLE VII

ARTICLE VIII

ARTICLE IX

ARTICLE X

ARTICLE XI

ARTICLE XII

ARTICLE XIII

ARTICLE XIV

ARTICLE XV

ARTICLE XVI

ANNEX I 

REGULATIONS FOR THE TESTING, INSPECTION, APPROVAL AND MAINTENANCE OF CONTAINERS

CHAPTER I—REGULATIONS COMMON TO ALL SYSTEMS OF APPROVAL

Regulation 1

Regulation 2

CHAPTER II—REGULATIONS FOR APPROVAL OF NEW CONTAINERS BY DESIGN TYPE

Regulation 3

Regulation 4

Regulation 5

Regulation 6

Regulation 7

CHAPTER III—REGULATIONS FOR APPROVAL OF NEW CONTAINERS BY INDIVIDUAL APPROVAL

Regulation 8

CHAPTER IV—REGULATIONS FOR APPROVAL OF EXISTING CONTAINERS

Regulation 9

APPENDIX

ANNEX II

STRUCTURAL SAFETY REQUIREMENTS AND TESTS

Schedule 5A—1981 Amendments to Annex I of the International Convention for Safe Containers (CSC)

CHAPTER I 

Regulation 2

CHAPTER IV 

Regulation 9

Schedule 8—International Convention on Tonnage Measurement of Ships, 1969

ARTICLE 1

ARTICLE 2

ARTICLE 3

ARTICLE 4

ARTICLE 5

ARTICLE 6

ARTICLE 7

ARTICLE 8

ARTICLE 9

ARTICLE 10

ARTICLE 11

ARTICLE 12

ARTICLE 13

ARTICLE 14

ARTICLE 15

ARTICLE 16

ARTICLE 17

ARTICLE 18

ARTICLE 19

ARTICLE 20

ARTICLE 21

ARTICLE 22

ANNEX I 

REGULATIONS FOR DETERMINING GROSS AND NET TONNAGES OF SHIPS

Regulation 1

Regulation 2

Regulation 3

Regulation 4

Regulation 5

Regulation 6

Regulation 7

ANNEX II 

CERTIFICATE 

APPENDIX 1 

APPENDIX 2 

Schedule 9

PART A 

INTERNATIONAL CONVENTION ON SALVAGE, 1989

Article 1 

Article 2 

Article 3 

Article 4 

Article 5 

Article 6 

Article 7 

Article 8 

Article 9 

Article 10

Article 11

Article 12

Article 13

Article 14

Article 15

Article 16

Article 17

Article 18

Article 19

Article 20

Article 21

Article 22

Article 23

Article 24

Article 25

Article 26

Article 27

Article 28

Article 29

Article 30

Article 31

Article 32

Article 33

Article 34

PART B 

COMMON UNDERSTANDING CONCERNING ARTICLES 13 AND 14 OF THE INTERNATIONAL CONVENTION ON SALVAGE, 1989

Schedule 2Protocol of 1978 relating to the International Convention for the Safety of Life at Sea, 1974

Subsection 187A(1)

ARTICLE I

General Obligations

The Parties to the present Protocol undertake to give effect to the provisions of the present Protocol and the Annex hereto which shall constitute an integral part of the present Protocol. Every reference to the present Protocol constitutes at the same time a reference to the Annex hereto.

ARTICLE II

Application

1. The provisions of Articles II, III (other than paragraph (a)), IV, VI (b), (c) and (d), VII and VIII of the International Convention for the Safety of Life at Sea, 1974 (hereinafter referred to as “the Convention”) are incorporated in the present Protocol, provided that references in those Articles to the convention and to Contracting Governments shall be taken to mean references to the present Protocol and to the Parties to the present Protocol, respectively.

2. Any ship to which the present Protocol applies shall comply with the provisions of the Convention, subject to the modifications and additions set out in the present Protocol.

3. With respect to the ships of nonparties to the Convention and the present Protocol, the Parties to the present Protocol shall apply the requirements of the Convention and the present Protocol as may be necessary to ensure that no more favourable treatment is given to such ships.

ARTICLE III

Communication of Information

The Parties to the present Protocol undertake to communicate to, and deposit with, the SecretaryGeneral of the InterGovernmental Maritime Consultative Organization (hereinafter referred to as “the Organization”), a list of nominated surveyors or recognized organizations which are authorized to act on their behalf in the administration of measures for safety of life at sea for circulation to the Parties for information of their officers. The Administration shall therefore notify the Organization of the specific responsibilities and conditions of the authority delegated to the nominated surveyors or recognized organizations.

ARTICLE IV

Signature, Ratification, Acceptance, Approval and Accession

1. The present Protocol shall be open for signature at the Headquarters of the Organization from 1 June 1978 to 1 March 1979 and shall thereafter remain open for accession. Subject to the provisions of paragraph 3 of this Article, States may become Parties to the present Protocol by:

 (a) signature without reservation as to ratification, acceptance or approval; or

 (b) signature subject to ratification, acceptance or approval, followed by ratification, acceptance or approval; or

 (c) accession.

2. Ratification, acceptance, approval or accession shall be effected by the deposit of an instrument to that effect with the SecretaryGeneral of the Organization.

3. The present Protocol may be signed without reservation, ratified, accepted, approved or acceded to only by States which have signed without reservation, ratified, accepted, approved or acceded to the Convention.

ARTICLE V

Entry into Force

1. The present Protocol shall enter into force six months after the date on which not less than fifteen States, the combined merchant fleets of which constitute not less than fifty per cent of the gross tonnage of the world’s merchant shipping, have become Parties to it in accordance with Article IV of the present Protocol, provided however that the present Protocol shall not enter into force before the Convention has entered into force.

2. Any instrument of ratification, acceptance, approval or accession deposited after the date on which the present Protocol enters into force shall take effect three months after the date of deposit.

3. After the date on which an amendment to the present Protocol is deemed to have been accepted under Article VIII of the Convention, any instrument of ratification, acceptance, approval or accession deposited shall apply to the present Protocol as amended.

ARTICLE VI

Denunciation

1. The present Protocol may be denounced by any Party at any time after the expiry of five years from the date on which the present Protocol enters into force for that party.

2. Denunciation shall be effected by the deposit of an instrument of denunciation with the SecretaryGeneral of the Organization.

3. A denunciation shall take effect one year, or such longer period as may be specified in the instrument of denunciation, after its receipt by the SecretaryGeneral of the Organization.

4. A denunciation of the Convention by a Party shall be deemed to be a denunciation of the present Protocol by that Party.

ARTICLE VII

Depositary

1. The present Protocol shall be deposited with the SecretaryGeneral of the Organization (hereinafter referred to as “the Depositary”).

2. The Depositary shall:

 (a) inform all States which have signed the present Protocol or acceded thereto of:

 (i) each new signature or deposit of an instrument of ratification, acceptance, approval or accession, together with the date thereof;

 (ii) the date of entry into force of the present Protocol;

 (iii) the deposit of any instrument of denunciation of the present Protocol together with the date on which it was received and the date on which the denunciation takes effect;

 (b) transmit certified true copies of the present Protocol to all States which have signed the present Protocol or acceded thereto.

3. As soon as the present Protocol enters into force, a certified true copy thereof shall be transmitted by the Depositary to the Secretariat of the United Nations for registration and publication in accordance with Article 102 of the Charter of the United Nations.

ARTICLE VIII

Languages

The present Protocol is established in a single original in the Chinese, English, French, Russian and Spanish languages, each text being equally authentic. Official translations in the Arabic, German and Italian languages shall be prepared and deposited with the signed original.


ANNEX

MODIFICATIONS AND ADDITIONS TO THE INTERNATIONAL CONVENTION FOR THE SAFETY OF LIFE AT SEA, 1974

CHAPTER I

GENERAL PROVISIONS

PART A—APPLICATION, DEFINITIONS, ETC.

Regulation 2

Definitions

The following paragraph is added to the existing text:

 (n) “Age of a ship” means the elapsed period of time determined from the year of build as indicated on the ship’s registry papers.

PART B—SURVEYS AND CERTIFICATES

Regulation 6

Inspection and Survey

The existing text of Regulation 6 is replaced by the following:

 (a) The inspection and survey of ships, so far as regards the enforcement of the provisions of the present Regulations and the granting of exemptions therefrom, shall be carried out by officers of the Administration. The Administration may, however, entrust the inspections and surveys either to surveyors nominated for the purpose or to organizations recognized by it.

 (b) The Administration shall institute arrangements for unscheduled inspections to be carried out during the period of validity of the certificate. Such inspections shall ensure that the ship and its equipment remain in all respects satisfactory for the service for which the ship is intended. These inspections may be carried out by the Administration’s own inspection services, or by nominated surveyors, or by recognized organizations, or by other Parties upon request of the Administration. Where the Administration, under the provisions of Regulations 8 and 10 of this Chapter, establishes mandatory annual surveys, the above unscheduled inspections shall not be obligatory.

 (c) An Administration nominating surveyors or recognizing organizations to conduct inspections and surveys as set forth in paragraphs (a) and (b) of this Regulation shall as a minimum empower any nominated surveyor or recognized organization to:

 (i) require repairs to a ship, and

 (ii) carry out inspections and surveys if requested by the appropriate authorities of a Port State.

The Administration shall notify the Organization of the specific responsibilities and conditions of the authority delegated to nominated surveyors or recognized organizations.

 (d) When a nominated surveyor or recognized organization determines that the condition of the ship or its equipment does not correspond substantially with the particulars of the certificate or is such that the ship is not fit to proceed to sea without danger to the ship, or persons on board, such surveyor or organization shall immediately ensure that corrective action is taken and shall in due course notify the Administration. If such corrective action is not taken the relevant certificate should be withdrawn and the Administration shall be notified immediately; and, if the ship is in the port of another Party, the appropriate authorities of the Port State shall also be notified immediately. When an officer of the Administration, a nominated surveyor or recognized organization has notified the appropriate authorities of the Port State, the Government of the Port State concerned shall give such officer, surveyor or organization any necessary assistance to carry out their obligations under this Regulation. When applicable, the Government of the Port State concerned shall ensure that the ship shall not sail until it can proceed to sea, or leave port for the purpose of proceeding to the appropriate repair yard, without danger to the ship or persons on board.

 (e) In every case, the Administration shall fully guarantee the completeness and efficiency of the inspection and survey, and shall undertake to ensure the necessary arrangements to satisfy this obligation.

Regulation 7

Surveys of Passenger Ships

The existing text of paragraph (b) (iii) is replaced by the following:

 (iii) A survey either general or partial, according to the circumstances, shall be made after a repair resulting from investigations prescribed in Regulation 11 of this Chapter, or whenever any important repairs or renewals are made. The survey shall be such as to ensure that the necessary repairs or renewals have been effectively made, that the material and workmanship of such repairs or renewals are in all respects satisfactory, and that the ship complies in all respects with the provisions of the Convention and the present Protocol and of the International Regulations for Preventing Collisions at Sea in force, and of the laws, decrees, orders and regulations promulgated as a result thereof by the Administration.

Regulation 8

Surveys of LifeSaving Appliances and other Equipment of Cargo Ships

The existing text of Regulation 8 is replaced by the following:

 (a) The lifesaving appliances, except a radiotelegraph installation in a motor lifeboat or a portable radio apparatus for survival craft, the echosounding device, the gyrocompass, the fireextinguishing appliances and the inert gas system of cargo ships to which Chapters II–1, II–2, III and V of the Convention and the present Protocol apply, shall be subject to initial and subsequent surveys as prescribed for passenger ships in Regulation 7 of Chapter I of the Convention and the present Protocol with the substitution of 24 months for 12 months in subparagraph (a) (ii) of that Regulation. The fire control plans in new ships and the pilot ladders, mechanical pilot hoists, lights, shapes and means of making sound signals carried by new and existing ships shall be included in the surveys for the purpose of ensuring that they comply fully with the requirements of the Convention and the present Protocol and, where applicable, the International Regulations for Preventing Collisions at Sea in force.

 (b) Intermediate surveys shall be made for tankers of ten years of age and over, within three months before or after the anniversary date of the Cargo Ship Safety Equipment Certificate, to ensure that equipment specified in paragraph (a) of this Regulation has been maintained in accordance with Regulation 11 of this Chapter and that it is in good working condition. Such intermediate surveys shall be endorsed on the Cargo Ship Safety Equipment Certificate issued in accordance with Regulation 12 (a) (iii) of Chapter I of the Convention.

Regulation 10

Surveys of Hull, Machinery and Equipment of Cargo Ships

The existing text of Regulation 10 is replaced by the following:

 (a) The hull, machinery and equipment (other than items in respect of which Cargo Ship Safety Equipment Certificates, Cargo Ship Safety Radiotelegraphy Certificates or Cargo Ship Radiotelephony Certificates are issued) of a cargo ship shall be surveyed on completion and thereafter in such a manner as the Administration may consider necessary in order to ensure that their condition is in all respects satisfactory and at the following intervals:

 (i) at intervals specified by the Administration but not exceeding five years (periodical surveys);

 (ii) in addition to such periodical surveys a tanker of ten years of age and over shall undergo a minimum of one intermediate survey during the period of validity of its Cargo Ship Safety Construction Certificate. In cases where only one such intermediate survey is carried out in any one certificate validity period, it shall be held not before six months prior to, nor later than six months after, the halfway date of the certificate’s period of validity.

 (b) The initial and periodical survey shall be such as to ensure that the arrangements material and scantlings of the structure, boilers and other pressure vessels, their appurtenances, main and auxiliary machinery including steering gear and associated control systems, electrical installation and other equipment are in all respects satisfactory for the service for which the ship is intended. Such surveys shall, in the case of tankers, also include inspection of the outside of the ship’s bottom, pump rooms, cargo and bunker piping systems, vent piping, pressure vacuum valves and flame screens.

 (c) The intermediate survey of tankers of ten years of age and over shall include inspection of steering gear equipment and associated control systems, pump rooms, cargo and bunker piping systems on deck and in pump rooms, vent piping, pressure vacuum valves and flame screens, the electrical installations in dangerous zones, and the outside of the ship’s bottom. In addition to the visual inspection of the electrical installation, the insulation resistance of the electrical equipment in dangerous zones is to be tested. If, upon examination, there should be any doubt as to the condition of the piping, extra measures, such as pressure tests and thickness determination, shall be taken as necessary. Such intermediate surveys shall be endorsed on the Cargo Ship Safety Construction Certificate issued in accordance with Regulation 12 (a) (ii) of Chapter I of the Convention.

 (d) A survey, either general or partial according to the circumstances, shall be made when required after an investigation prescribed in Regulation 11 of this Chapter, or whenever any important repairs or renewals are made. The survey shall be such as to ensure that the necessary repairs or renewals have been effectively made, that the material and workmanship of such repairs or renewals are in all respects satisfactory, and that the ship is fit to proceed to sea without danger to the ship or persons on board.

Regulation 11

Maintenance of Conditions after Survey

The existing text of Regulation 11 is replaced by the following:

 (a) The condition of the ship and its equipment shall be maintained to conform with the provisions of the Convention and the present Protocol to ensure that the ship in all respects will remain fit to proceed to sea without danger to the ship or persons on board.

 (b) After any survey of the ship under Regulations 6, 7, 8, 9 or 10 of Chapter I of the Convention and the present Protocol has been completed, no change shall be made in the structural arrangement, machinery, equipment and other items covered by the survey, without the sanction of the Administration.

 (c) Whenever an accident occurs to a ship or a defect is discovered, either of which affects the safety of the ship or the efficiency or completeness of its lifesaving appliances or other equipment, the master or owner of the ship shall report at the earliest opportunity to the Administration, the nominated surveyor or recognized organization responsible for issuing the relevant certificate, who shall cause investigations to be initiated to determine whether a survey, as required by Regulations 6, 7, 8, 9 or 10 of Chapter I of the Convention and the present Protocol, is necessary. If the ship is in a port of another Party, the master or owner shall also report immediately to the appropriate authorities of the Port State and the nominated surveyor or recognized organization shall ascertain that such a report has been made.

Regulation 14

Duration and Validity of Certificates

The existing text of Regulation 14 is replaced by the following:

 (a) Certificates other than the Cargo Ship Safety Construction Certificate, the Cargo Ship Safety Equipment Certificate and any Exemption Certificate shall be issued for a period not exceeding 12 months. The Cargo Ship Safety Construction Certificate shall be issued for a period not exceeding five years. The Cargo Ship Safety Equipment Certificate shall be issued for a period not exceeding 24 months. Exemption Certificates shall not be valid for longer than the period of the certificates to which they refer.

 (b) No extension of the fiveyear period of validity of the Cargo Ship Safety Construction Certificate shall be permitted.

 (c) If a survey takes place within two months before the end of the period for which a Cargo Ship Safety Radiotelegraphy Certificate or a Cargo Ship Safety Radiotelephony Certificate issued in respect of cargo ships of 300 tons gross tonnage and upwards, but less than 500 tons gross tonnage, was originally issued, that certificate may be withdrawn, and a new certificate may be issued which shall expire 12 months after the end of the said period.

 (d) If the ship at the time when a certificate, other than that referred to in paragraph (b) of this Regulation, expires is not in a port of the country in which it is registered or is to be surveyed, the Administration may extend the certificate, but such extension shall be granted only for the purpose of allowing the ship to complete its voyage to the country in which it is registered or is to be surveyed, and then only in cases where it appears proper and reasonable to do so.

 (e) No certificate shall be extended under the provisions of paragraph (d) of this Regulation for a longer period than five months, and a ship to which an extension is granted shall not, on its arrival in the country in which it is registered or the port in which it is to be surveyed, be entitled by virtue of such extension to leave that port or country without having obtained a new certificate.

 (f) A certificate, other than that referred to in paragraph (b) of this Regulation, which has not been extended under the foregoing provisions of this Regulation, may be extended by the Administration for a period of grace up to one month from the date of expiry stated on it.

 (g) A certificate shall cease to be valid:

 (i) if the inspections and surveys are not carried out within the periods specified under Regulations 7 (a), 8, 9 and 10 (a) of Chapter I of the Convention and the present Protocol or as they may have been extended in accordance with paragraphs (d), (e) or (f) of this Regulation, or

 (ii) upon transfer of the ship to the flag of another Government. A new certificate shall only be issued when the Government issuing the new certificate is fully satisfied that the ship is in compliance with the requirements of Regulation 11 (a) and (b) of this Chapter. In the case of a transfer between Parties, if requested within three months after the transfer has taken place, the Government of the Party whose flag the ship was formerly entitled to fly shall, as soon as possible, transmit to the Administration copies of the certificates carried by the ship before the transfer and, if available, copies of the relevant survey reports.

Regulation 19

Control

The existing text of Regulation 19 is replaced by the following:

 (a) Every ship when in a port of another Party is subject to control by officers duly authorized by such Government in so far as this control is directed towards verifying that the certificates issued under Regulation 12 or Regulation 13 of Chapter I of the Convention are valid.

 (b) Such certificates, if valid, shall be accepted unless there are clear grounds for believing that the condition of the ship or of its equipment does not correspond substantially with the particulars of any of the certificates or that the ship and its equipment are not in compliance with the provisions of Regulation 11 (a) and (b) of this Chapter.

 (c) In the circumstances given in paragraph (b) of this Regulation or where a certificate has expired or ceased to be valid, the officer carrying out the control shall take steps to ensure that the ship shall not sail until it can proceed to sea or leave the port for the purpose of proceeding to the appropriate repair yard without danger to the ship or persons on board.

 (d) In the event of this control giving rise to an intervention of any kind, the officer carrying out the control shall forthwith inform, in writing, the Consul or, in his absence, the nearest diplomatic representative of the State whose flag the ship is entitled to fly of all the circumstances in which intervention was deemed necessary. In addition, nominated surveyors or recognized organizations responsible for the issue of the certificates shall also be notified. The facts concerning the intervention shall be reported to the Organization.

 (e) The Port State authority concerned shall notify all relevant information about the ship to the authorities of the next port of call, in addition to parties mentioned in paragraph (d) of this Regulation, if it is unable to take action as specified in paragraphs (c) and (d) of this Regulation or if the ship has been allowed to proceed to the next port of call.

 (f) When exercising control under this Regulation all possible efforts shall be made to avoid a ship being unduly detained or delayed. If a ship is thereby unduly detained or delayed it shall be entitled to compensation for any loss or damage suffered.


CHAPTER II–1

CONSTRUCTIONSUBDIVISION AND STABILITY, MACHINERY AND ELECTRICAL INSTALLATIONS

PART A—GENERAL

Regulation 1

Application

The following subparagraphs are added to the existing text of paragraph (b):

 (iii) Notwithstanding the provisions of subparagraph (ii) of this paragraph and subparagraph (a) (iii) of this Regulation, for the purposes of paragraph (d) of Regulation 29 of this Chapter, a new tanker means a tanker:

 (1) for which the building contract is placed after 1 June 1979; or

 (2) in the absence of a building contract, the keel of which is laid, or which is at a similar stage of construction after 1 January 1980; or

 (3) the delivery of which is after 1 June 1982; or

 (4) which has undergone an alteration or modification of a major character:

 (a) for which the contract is placed after 1 June 1979; or

 (b) in the absence of a contract, the construction work of which is begun after 1 January 1980; or

 (c) which is completed after 1 June 1982.

 (iv) For the purposes of paragraph (d) of Regulation 29 of this Chapter, an existing tanker is a tanker which is not a new tanker as defined in subparagraph (iii) of this paragraph.

 (v) For the purposes of subparagraph (iii) of this paragraph, conversion of an existing tanker of 20,000 metric tons deadweight and upwards to meet the requirements of the present Protocol or the Protocol of 1978 Relating to the International Convention for the Prevention of Pollution from Ships, 1973, shall not be deemed to constitute an alteration or modification of a major character.

Regulation 2

Definitions

The following paragraphs are added to the existing text:

 (k) The remote steering gear control system is the means by which required rudder movements are transmitted from the navigating bridge to the steering gear power unit controls.

 (l) The main steering gear is the machinery, the steering gear power units, if any, and ancillary equipment and the means of applying torque to the rudder stock (e.g. tiller or quadrant) necessary for effecting movement of the rudder for the purpose of steering the ship under normal service conditions.

 (m) The steering gear power unit is:

 (i) in the case of electric steering gear, an electric motor and its associated electrical equipment;

 (ii) in the case of electrohydraulic steering gear, an electric motor and its associated electrical equipment and connected pump;

 (iii) in the case of other hydraulic steering gear, a driving engine and connected pump.

 (n) The auxiliary steering gear is that equipment which is provided for effecting movement of the rudder for the purpose of steering the ship in the event of failure of the main steering gear.

PART C—MACHINERY AND ELECTRICAL INSTALLATIONS

Regulation 29

Steering Gear

The following paragraph is added to the existing text:

 (d) Tankers only

 (i) The following shall apply to every new tanker of 10,000 tons gross tonnage and upwards and, not later than two years from the date of entry into force of the present Protocol, to every existing tanker of 10,000 tons gross tonnage and upwards:

 (1) two remote steering gear control systems shall be provided, each of which shall be operable separately from the navigating bridge. This does not require duplication of the steering wheel or steering lever. In the event of failure of the remote steering gear control system in operation, the other system shall be capable of being brought into immediate operation from a position on the navigating bridge. Each remote steering gear control system, if electric, shall be served by its own separate circuit supplied from the steering gear power circuit from a point within the steering gear compartment. In the event of failure of electrical power supply to a remote steering gear control system an alarm shall be given on the navigating bridge. The alarms required in this subparagraph shall be both audible and visual and situated in a position on the navigating bridge where they can be readily observed;

 (2) control of the main steering gear shall also be provided in the steering gear compartment;

 (3) means shall be provided in the steering gear compartment to disconnect the remote steering gear control system from the power circuit;

 (4) a means of communication shall be provided between the navigating bridge and the steering gear compartment;

 (5) the exact angular position of the rudder shall be indicated on the navigating bridge. The rudder angle indication shall be independent of the remote steering gear control system; and

 (6) the angular position of the rudder shall be recognizable in the steering gear compartment.

 (ii) In every new tanker of 10,000 tons gross tonnage and upwards, in addition to the requirements of paragraph (a) and subparagraph (d) (i) of this Regulation, the following shall apply:

 (1) the main steering gear shall comprise two or more identical power units and it shall be capable of operating the rudder as required by subparagraph (d) (ii) (2) of this Regulation while operating with one or more power units. As far as reasonable and practicable, the main steering gear shall be so arranged that a single failure in its piping or in one of the power units will not impair the integrity of the remaining part of the steering gear. All mechanical couplings which are part of the steering gear and the mechanical connexion with any remote steering gear control system, if any, shall be of sound and reliable construction to the satisfaction of the Administration;

 (2) the main steering gear shall, with the ship at its deepest seagoing draught, be capable of putting the rudder over from 35 degrees on one side to 35 degrees on the other side with the ship running ahead at maximum service speed. The rudder shall be capable of being put over from 35 degrees on either side to 30 degrees on the other side in not more than 28 seconds, under the same conditions;

 (3) the main steering gear shall be operated by power where necessary to fulfil the requirements of subparagraph (d) (ii) (2) of this Regulation;

 (4) the main steering gear power units shall be arranged to start automatically when power is restored after a power failure;

 (5) in the event of failure of any of the steering gear power units an alarm shall be given on the navigating bridge. Every steering gear power unit shall be capable of being brought into operation either automatically or manually from a position on the navigating bridge; and

 (6) an alternative power supply, at least sufficient to supply a steering gear power unit so as to enable it to move the rudder as specified below, and also to supply its associated remote steering gear control system and the rudder angle indicator, shall be provided, automatically, within 45 seconds, either from the emergency source of electrical power, or from another independent source of power located in the steering gear compartment. This independent source of power shall be used only for this purpose and shall have a capacity sufficient for half an hour of continuous operation. The steering gear power unit, when being supplied by the alternative power supply, shall at least be capable of putting the rudder over from 15 degrees on one side to 15 degrees on the other side in not more than 60 seconds with the ship at its deepest seagoing draught while running at one half of its maximum service speed ahead or 7 knots, whichever is the greater.

CHAPTER II–2

CONSTRUCTIONFIRE PROTECTION, FIRE DETECTION AND FIRE EXTINCTION

PART A—GENERAL

Regulation 1

Application

The following subparagraphs are added to the existing text of paragraph (a):

 (iv) Notwithstanding the provisions of subparagraphs (ii) and (iii) of this paragraph, for the purposes of paragraph (a) (ii) of Regulation 55 and of Regulation 60 of this Chapter, a new tanker means a tanker:

 (1) for which the building contract is placed after 1 June 1979; or

 (2) in the absence of a building contract, the keel of which is laid, or which is at a similar stage of construction after 1 January 1980; or

 (3) the delivery of which is after 1 June 1982; or

 (4) which has undergone an alteration or modification of a major character:

 (a) for which the contract is placed after 1 June 1979; or

 (b) in the absence of a contract, the construction work of which is begun after 1 January 1980; or

 (c) which is completed after 1 June 1982.

 (v) For the purposes of paragraph (a) (ii) of Regulation 55 and of Regulation 60 of this Chapter, an existing tanker is a tanker which is not a new tanker as defined in subparagraph (iv) of this paragraph.

 (vi) For the purposes of subparagraph (iv) of this paragraph, conversion of an existing tanker of 20,000 metric tons deadweight and upwards to meet the requirements of the present Protocol or the Protocol of 1978 Relating to the International Convention for the Prevention of Pollution from Ships, 1973 shall not be deemed to constitute an alteration or modification of a major character.

Regulation 3

Definitions

The existing text of paragraph (v) is replaced by the following:

 (v) “Lightweight” means the displacement of a ship in metric tons without cargo, fuel, lubricating oil, ballast water, fresh water and feed water in tanks, consumable stores, and passengers and crew and their effects.

The following paragraph is added to the existing text:

 (x) “Crude oil” means any oil occurring naturally in the earth whether or not treated to render it suitable for transportation and includes:

 (i) crude oil from which certain distillate fractions may have been removed; and

 (ii) crude oil to which certain distillate fractions may have been added.

PART E—FIRE SAFETY MEASURES FOR TANKERS

Regulation 55

Application

The existing text of this Regulation is replaced by the following:

 (a) Unless expressly provided otherwise:

 (i) this Part shall apply to all new tankers carrying crude oil and petroleum products having a flashpoint not exceeding 60C (140F) (closed cup test) as determined by an approved flashpoint apparatus and a Reid vapour pressure which is below atmospheric pressure and other liquid products having a similar fire hazard; and

 (ii) in addition, all ships covered by this Part shall comply with the requirements of Regulations 52, 53 and 54 of Chapter II–2 of the Convention except that fixed gas fireextinguishing systems for cargo spaces shall not be used for new tankers and for those existing tankers complying with Regulation 60 of this Chapter. For existing tankers not required to comply with Regulation 60, the Administration, in applying the requirements of paragraph (f) of Regulation 52, may accept a froth system capable of discharging froth internally or externally to the tanks. The details of the installation shall be to the satisfaction of the Administration.

 (b) Where cargoes other than those referred to in subparagraph (a) (i) of this Regulation which introduce additional fire hazards are intended to be carried, additional safety measures shall be required to the satisfaction of the Administration.

 (c) Combination carriers shall not carry solid cargoes unless all cargo tanks are empty of oil and gas freed or unless, in each case, the Administration is satisfied with the arrangements provided.

Regulation 60

Cargo Tank Protection

The existing text of this Regulation is replaced by the following:

 (a) For new tankers of 20,000 metric tons deadweight and upwards, the protection of the cargo tanks deck area and cargo tanks shall be achieved by a fixed deck froth system and a fixed inert gas system in accordance with the requirements of Regulations 61 and 62 of Chapter II–2 of the Convention except that in lieu of the above installations the Administration, after having given consideration to the ship’s arrangement and equipment, may accept other combinations of fixed installations if they afford protection equivalent to the above, in accordance with Regulation 5 of Chapter I of the Convention.

 (b) To be considered equivalent, the system proposed in lieu of the deck froth system shall:

 (i) be capable of extinguishing spill fires and also preclude ignition of spilled oil not yet ignited; and

 (ii) be capable of combating fires in ruptured tanks.

 (c) To be considered equivalent, the system proposed in lieu of the fixed inert gas system shall:

 (i) be capable of preventing dangerous accumulations of explosive mixtures in intact cargo tanks during normal service throughout the ballast voyage and necessary intank operations; and

 (ii) be so designed as to minimize the risk of ignition from the generation of static electricity by the system itself.

 (d) Any existing tanker of 20,000 metric tons deadweight and upwards engaged in the trade of carrying crude oil shall be fitted with an inert gas system, complying with the requirements of paragraph (a) of this Regulation, not later than a date:

 (i) for a tanker of 70,000 metric tons deadweight and upwards, two years after the date of entry into force of the present Protocol; and

 (ii) for a tanker of less than 70,000 metric tons deadweight, four years after the date of entry into force of the present Protocol, except that for tankers less than 40,000 tons deadweight not fitted with tank washing machines having an individual throughput of greater than 60 cubic metres per hour, the Administration may exempt existing tankers from the requirements of this paragraph, if it would be unreasonable and impracticable to apply these requirements, taking into account the ship’s design characteristics.

 (e) Any existing tanker of 40,000 metric tons deadweight and upwards engaged in the trade of carrying oil other than crude oil and any such tanker of 20,000 metric tons deadweight and upwards engaged in the trade of carrying oil other than crude oil fitted with tank washing machines having an individual throughput of greater than 60 cubic metres per hour shall be fitted with an inert gas system, complying with the requirements of paragraph (a) of this Regulation, not later than a date:

 (i) for a tanker of 70,000 metric tons deadweight and upwards, two years after the date of entry into force of the present Protocol; and

 (ii) for a tanker of less than 70,000 metric tons deadweight, four years after the date of entry into force of the present Protocol.

 (f) Any tanker operating with a cargo tank cleaning procedure using crude oil washing shall be fitted with an inert gas system complying with the requirements of Regulation 62 of Chapter II2 of the Convention and with fixed tank washing machines.

 (g) All tankers fitted with a fixed inert gas system shall be provided with a closed ullage system.

 (h) Any new tanker of 2,000 tons gross tonnage and upwards not covered by paragraph (a) of this Regulation shall be provided with a froth system, capable of discharging froth internally or externally, to the tanks. The details of such installation shall be to the satisfaction of the Administration.

CHAPTER V

SAFETY OF NAVIGATION

Regulation 12

Shipborne Navigational Equipment

The existing text of paragraph (a) is replaced by the following:

 (a) All ships of 1,600 tons gross tonnage and upwards but less than 10,000 tons gross tonnage shall be fitted with at least one radar. All ships of 10,000 tons gross tonnage and upwards shall be fitted with at least two radars, each capable of operating independently of the other. All radars fitted in compliance with this Regulation shall be of a type approved by the Administration and shall conform to operational standards not inferior to those adopted by the Organization. Facilities for plotting radar readings shall be provided on the bridge in those ships.

Regulation 19

Use of the Automatic Pilot

The following paragraph is added to the existing text:

 (d) The manual steering shall be tested after prolonged use of the automatic pilot, and before entering areas where navigation demands special caution.

The following new Regulations are added to this Chapter:

Regulation 191

Operation of Steering Gear

In areas where navigation demands special caution, ships shall have more than one steering gear power unit in operation when such units are capable of simultaneous operation.

Regulation 192

Steering Gear—Testing and Drills

 (a) Within 12 hours before departure, the ship’s steering gear shall be checked and tested by the ship’s crew. The test procedure shall include, where applicable, the operation of the following.

 (i) the main steering gear;

 (ii) the auxiliary steering gear;

 (iii) the remote steering gear control systems;

 (iv) the steering positions located on the navigating bridge;

 (v) the emergency power supply;

 (vi) the rudder angle indicators in relation to the actual position of the rudder;

 (vii) the remote steering gear control system power failure alarms; and

 (viii) the steering gear power unit failure alarms.

 (b) The checks and tests shall include:

 (i) the full movement of the rudder according to the required capabilities of the steering gear;

 (ii) a visual inspection of the steering gear and its connecting linkage; and

 (iii) the operation of the means of communication between the navigating bridge and steering gear compartment.

 (c) (i) Simple operating instructions with a block diagram showing the changeover procedures for remote steering gear control systems and steering gear power units shall be permanently displayed on the navigating bridge and in the steering gear compartment.

 (ii) All officers concerned with the operation and/or maintenance of steering gear shall be familiar with the operation of the steering systems fitted on the ship and with the procedures for changing from one system to another.

 (d) In addition to the routine checks and tests prescribed in paragraphs (a) and (b) of this Regulation, emergency steering drills shall take place at least once every three months in order to practise emergency steering procedures. These drills shall include direct control from within the steering gear compartment, the communications procedure with the navigating bridge and, where applicable, the operation of alternative power supplies.

 (e) The Administration may waive the requirement to carry out the checks and tests prescribed in paragraphs (a) and (b) of this Regulation for ships which regularly ply on voyages of short duration. Such ships shall carry out these checks and tests at least once every week.

 (f) The date upon which the checks and tests prescribed in paragraphs (a) and (b) of this Regulation are carried out and the date and details of emergency steering drills carried out under paragraph (d) of this Regulation, shall be recorded in the log book as may be prescribed by the Administration.


APPENDIX

Form of Safety Construction Certificate for Cargo Ships

The following form of Supplement is added to the existing form:

SUPPLEMENT TO THE CARGO SHIP SAFETY CONSTRUCTION CERTIFICATE

(Official Seal)  (Country)

Issued under the provisions of the

PROTOCOL OF 1978 RELATING TO THE INTERNATIONAL CONVENTION FOR THE SAFETY OF LIFE AT SEA, 1974

Name of Ship

Distinctive Number or Letters

Port of Registry

Deadweight of Ship (metric tons)

Year of Build

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Type of ship:

Tanker engaged in the trade of carrying crude oil*

Tanker engaged in the trade of carrying oil other than crude oil*

Tanker engaged in the trade of carrying crude/other oil*

Cargo ship other than a tanker engaged in the trade of carrying oil*

Date of contract for building or alteration or modification of a major
character....................................................

Date on which keel was laid or ship was at a similar stage of construction or on which an alteration or modification of a major character was
commenced.................................................

Date of delivery or completion of an alteration or modification of a major character......

* Delete as appropriate.

This Supplement shall be permanently attached to the Cargo Ship Safety Construction Certificate.

THIS IS TO CERTIFY:

That the ship has been surveyed in accordance with Regulation 10 of Chapter I of the Protocol of 1978 Relating to the International Convention for the Safety of Life at Sea, 1974; and

that the survey showed that the condition of the hull, machinery and equipment as defined in the above Regulation was in all respects satisfactory and that the ship complied with the requirements of that Protocol.

This certificate is valid until.................subject to intermediate survey(s) at intervals of             

Issued at..................................................

(Place of issue of certificate)

..................19............ ............................

 (Signature of duly authorized official
 issuing the certificate)

(Seal or stamp of the issuing Authority, as appropriate)

INTERMEDIATE SURVEY

This is to certify that at an intermediate survey required by Regulation 10 of Chapter I of the Protocol of 1978 Relating to the International Convention for the Safety of Life at Sea, 1974, this ship was found to comply with the relevant provisions of that Protocol.

Signed..................................................

(Signature of duly authorized official)

Place....................................................

Date....................................................

Next intermediate survey due.................................

(Seal or stamp of the Authority, as appropriate)

Signed..................................................

(Signature of duly authorized official)

Place...................................................

Date....................................................

Next intermediate survey due.................................

(Seal or stamp of the Authority, as appropriate)

Signed..................................................

(Signature of duly authorized official)

Place...................................................

Date....................................................

Next intermediate survey due.................................

(Seal or stamp of the Authority, as appropriate)

Signed..................................................

(Signature of duly authorized official)

Place...................................................

Date....................................................

(Seal or stamp of the Authority, as appropriate)

Form of Safety Equipment Certificate for Cargo Ships

The following form of Supplement is added to existing form:

SUPPLEMENT TO THE CARGO SHIP SAFETY EQUIPMENT CERTIFICATE

(Official Seal) (Country)

Issued under the provisions of the

PROTOCOL OF 1978 RELATING TO THE INTERNATIONAL CONVENTION FOR THE SAFETY OF LIFE AT SEA, 1974

Name of Ship

Distinctive Number or Letters

Port of Registry

Deadweight of Ship (metric tons)

Year of Build

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Type of ship:

Tanker engaged in the trade of carrying crude oil*

Tanker engaged in the trade of carrying oil other than crude oil*

Tanker engaged in the trade of carrying crude/other oil*

Cargo ship other than a tanker engaged in the trade of carrying oil*

Date of contract for building or alteration or modification of a major
character....................................................

Date on which keel was laid or ship was at a similar stage of construction
or on which an alteration or modification of a major character was
commenced.................................................

Date of delivery or completion of an alteration or modification of a major character......

* Delete as appropriate.

This Supplement shall be permanently attached to the Cargo Ship Safety Equipment Certificate.

THIS IS TO CERTIFY:

That the ship has been surveyed in accordance with Regulation 8 of Chapter I of the Protocol of 1978 Relating to the International Convention for the Safety of Life at Sea, 1974; and

that the survey showed that the condition of the safety equipment as defined in the above Regulation was in all respects satisfactory and that the ship complied with the requirements of that Protocol.

This certificate is valid until..........................  subject to

intermediate survey(s) at intervals of...............................

Issued at.................................................

 (Place of issue of certificate)

..............19...... ................................

 (Signature of duly authorized official
  issuing the certificate)

(Seal or stamp of the issuing Authority, as appropriate)

INTERMEDIATE SURVEY

This is to certify that at an intermediate survey required by Regulation 8 of Chapter I of the Protocol of 1978 Relating to the International Convention for the Safety of Life at Sea, 1974, the ship was found to comply with the relevant provisions of that Protocol.

Signed..................................................

(Signature of duly authorized official)

Place...................................................

Date....................................................

Next intermediate survey due.................................

(Seal or stamp of the Authority, as appropriate)

Signed..................................................

(Signature of duly authorized official)

Place...................................................

Date...................................................

(Seal or stamp of the Authority, as appropriate)

Under the provisions of Regulation 14 of Chapter I of the Protocol the validity of this Certificate is extended until......

Signed..................................................

(Signature of duly authorized official)

Place...................................................

Date....................................................

(Seal or stamp of the Authority, as appropriate)


Schedule 3Convention on the International Regulations for Preventing Collisions at Sea, 1972

Subsection 187A(1)

ARTICLE I

General Obligations

The Parties to the present Convention undertake to give effect to the Rules and other Annexes constituting the International Regulations for Preventing Collisions at Sea, 1972, (hereinafter referred to as “the Regulations”) attached hereto.

ARTICLE II

Signature, Ratification, Acceptance, Approval and Accession

1. The present Convention shall remain open for signature until 1 June 1973 and shall thereafter remain open for accession.

2. States Members of the United Nations, or of any of the Specialized Agencies, or the International Atomic Energy Agency, or Parties to the Statute of the International Court of Justice may become Parties to this Convention by:

 (a) signature without reservation as to ratification, acceptance or approval;

 (b) signature subject to ratification, acceptance or approval followed by ratification, acceptance or approval; or

 (c) accession.

3. Ratification, acceptance, approval or accession shall be effected by the deposit of an instrument to that effect with the InterGovernmental Maritime Consultative Organization (hereinafter referred to as “the Organization”) which shall inform the Governments of States that have signed or acceded to the present Convention of the deposit of each instrument and of the date of its deposit.

ARTICLE III

Territorial Application

1. The United Nations in cases where they are the administering authority for a territory or any Contracting Party responsible for the international relations of a territory may at any time by notification in writing to the SecretaryGeneral of the Organization (hereinafter referred to as “the SecretaryGeneral”), extend the application of this Convention to such a territory.

2. The present Convention shall, upon the date of receipt of the notification or from such other date as may be specified in the notification, extend to the territory named therein.

3. Any notification made in accordance with paragraph 1 of this Article may be withdrawn in respect of any territory mentioned in that notification and the extension of this Convention to that territory shall cease to apply after one year or such longer period as may be specified at the time of the withdrawal.

4. The SecretaryGeneral shall inform all Contracting Parties of the notification of any extension or withdrawal of any extension communicated under this Article.

ARTICLE IV

Entry into force

1. (a) The present Convention shall enter into force twelve months after the date on which at least 15 States, the aggregate of whose merchant fleets constitutes not less than 65 per cent by number or by tonnage of the world fleet of vessels of 100 gross tons and over have become Parties to it, whichever is achieved first.

 (b) Notwithstanding the provisions in subparagraph (a) of this paragraph, the present Convention shall not enter into force before 1 January 1976.

2. Entry into force for States which ratify, accept, approve or accede to this Convention in accordance with Article II after the conditions prescribed in subparagraph 1 (a) have been met and before the Convention enters into force, shall be on the date of entry into force of the Convention.

3. Entry into force for States which ratify, accept, approve or accede after the date on which this Convention enters into force, shall be on the date of deposit of an instrument in accordance with Article II.

4. After the date of entry into force of an amendment to this Convention in accordance with paragraph 4 of Article VI, any ratification, acceptance, approval or accession shall apply to the Convention as amended.

5. On the date of entry into force of this Convention, the Regulations replace and abrogate the International Regulations for Preventing Collisions at Sea, 1960.

6. The SecretaryGeneral shall inform the Governments of States that have signed or acceded to this Convention of the date of its entry into force.

ARTICLE V

Revision Conference

1. A Conference for the purpose of revising this Convention or the Regulations or both may be convened by the Organization.

2. The Organization shall convene a Conference of Contracting Parties for the purpose of revising this Convention or the Regulations or both at the request of not less than onethird of the Contracting Parties.

ARTICLE VI

Amendments to the Regulations

1. Any amendment to the Regulations proposed by a Contracting Party shall be considered in the Organization at the request of that Party.

2. If adopted by a twothirds majority of those present and voting in the Maritime Safety Committee of the Organization, such amendment shall be communicated to all Contracting Parties and Members of the Organization at least six months prior to its consideration by the Assembly of the Organization. Any Contracting Party which is not a Member of the Organization shall be entitled to participate when the amendment is considered by the Assembly.

3. If adopted by a twothirds majority of those present and voting in the Assembly, the amendment shall be communicated by the SecretaryGeneral to all Contracting Parties for their acceptance.

4. Such an amendment shall enter into force on a date to be determined by the Assembly at the time of its adoption unless, by a prior date determined by the Assembly at the same time, more than onethird of the Contracting Parties notify the Organization of their objection to the amendment. Determination by the Assembly of the dates referred to in this paragraph shall be by a twothirds majority of those present and voting.

5. On entry into force any amendment shall, for all Contracting Parties which have not objected to the amendment, replace and supersede any previous provision to which the amendment refers.

6. The SecretaryGeneral shall inform all Contracting Parties and Members of the Organization of any request and communication under this Article and the date on which any amendment enters into force.

ARTICLE VII

Denunciation

1. The present Convention may be denounced by a Contracting Party at any time after the expiry of five years from the date on which the Convention entered into force for that Party.

2. Denunciation shall be effected by the deposit of an instrument with the Organization. The SecretaryGeneral shall inform all other Contracting Parties of the receipt of the instrument of denunciation and of the date of its deposit.

3. A denunciation shall take effect one year, or such longer period as may be specified in the instrument, after its deposit.

ARTICLE VIII

Deposit and Registration

1. The present Convention and the Regulations shall be deposited with the Organization, and the SecretaryGeneral shall transmit certified true copies thereof to all Governments of States that have signed this Convention or acceded to it.

2. When the present Convention enters into force, the text shall be transmitted by the SecretaryGeneral to the Secretariat of the United Nations for registration and publication in accordance with Article 102 of the Charter of the United Nations.

ARTICLE IX

Languages

The present Convention is established, together with the Regulations, in a single copy in the English and French languages, both texts being equally authentic. Official translations in the Russian and Spanish languages shall be prepared and deposited with the signed original.


INTERNATIONAL REGULATIONS FOR PREVENTING COLLISIONS AT SEA, 1972

PART A—GENERAL

RULE 1

Application

(a) These Rules shall apply to all vessels upon the high seas and in all waters connected therewith navigable by seagoing vessels.

(b) Nothing in these Rules shall interfere with the operation of special rules made by an appropriate authority for roadsteads, harbours, rivers, lakes or inland waterways connected with the high seas and navigable by seagoing vessels. Such special rules shall conform as closely as possible to these Rules.

(c) Nothing in these Rules shall interfere with the operation of any special rules made by the Government of any State with respect to additional station or signal lights or whistle signals for ships of war and vessels proceeding under convoy, or with respect to additional station or signal lights for fishing vessels engaged in fishing as a fleet. These additional station or signal lights or whistle signals shall, so far as possible, be such that they cannot be mistaken for any light or signal authorized elsewhere under these Rules.

(d) Traffic separation schemes may be adopted by the Organization for the purpose of these Rules.

(e) Whenever the Government concerned shall have determined that a vessel of special construction or purpose cannot comply fully with the provisions of any of these Rules with respect to the number, position, range or arc of visibility of lights or shapes, as well as to the disposition and characteristics of soundsignalling appliances, without interfering with the special function of the vessel, such vessel shall comply with such other provisions in regard to the number, position, range or arc of visibility of lights or shapes, as well as to the disposition and characteristics of soundsignalling appliances, as her Government shall have determined to be the closest possible compliance with these Rules in respect to that vessel.

RULE 2

Responsibility

(a) Nothing in these Rules shall exonerate any vessel, or the owner, master or crew thereof, from the consequences of any neglect to comply with these Rules or of the neglect of any precaution which may be required by the ordinary practice of seamen, or by the special circumstances of the case.

(b) In construing and complying with these Rules due regard shall be had to all dangers of navigation and collision and to any special circumstances, including the limitations of the vessels involved, which may make a departure from these Rules necessary to avoid immediate danger.

RULE 3

General Definitions

For the purpose of these Rules, except where the context otherwise requires:

(a) The word “vessel” includes every description of water craft, including nondisplacement craft and seaplanes, used or capable of being used as a means of transportation on water.

(b) The term “powerdriven vessel” means any vessel propelled by machinery.

(c) The term “sailing vessel” means any vessel under sail provided that propelling machinery, if fitted, is not being used.

(d) The term “vessel engaged in fishing” means any vessel fishing with nets, lines, trawls or other fishing apparatus which restrict manoeuvrability, but does not include a vessel fishing with trolling lines or other fishing apparatus which do not restrict manoeuvrability.

(e) The word “seaplane” includes any aircraft designed to manoeuvre on the water.

(f) The term “vessel not under command” means a vessel which through some exceptional circumstance is unable to manoeuvre as required by these Rules and is therefore unable to keep out of the way of another vessel.

(g) The term “vessel restricted in her ability to manoeuvre” means a vessel which from the nature of her work is restricted in her ability to manoeuvre as required by these Rules and is therefore unable to keep out of the way of another vessel.

The following vessels shall be regarded as vessels restricted in their ability to manoeuvre:

 (i) a vessel engaged in laying, servicing or picking up a navigation mark, submarine cable or pipeline;

 (ii) a vessel engaged in dredging, surveying or underwater operations;

 (iii) a vessel engaged in replenishment or transferring persons, provisions or cargo while underway;

 (iv) a vessel engaged in the launching or recovery of aircraft;

 (v) a vessel engaged in minesweeping operations;

 (vi) a vessel engaged in a towing operation such as severely restricts the towing vessel and her tow in their ability to deviate from their course.

(h) The term “vessel constrained by her draught” means a powerdriven vessel which because of her draught in relation to the available depth of water is severely restricted in her ability to deviate from the course she is following.

(i) The word “underway” means that a vessel is not at anchor, or made fast to the shore, or aground.

(j) The words “length” and “breadth” of a vessel mean her length overall and greatest breadth.

(k) Vessels shall be deemed to be in sight of one another only when one can be observed visually from the other.

(l) The term “restricted visibility” means any condition in which visibility is restricted by fog, mist, falling snow, heavy rainstorms, sandstorms or any other similar causes.

PART B—STEERING AND SAILING RULES

SECTION I—CONDUCT OF VESSELS IN ANY CONDITION OF VISIBILITY

RULE 4

Application

Rules in this Section apply in any condition of visibility.

RULE 5

Lookout

Every vessel shall at all times maintain a proper lookout by sight and hearing as well as by all available means appropriate in the prevailing circumstances and conditions so as to make a full appraisal of the situation and of the risk of collision.

RULE 6

Safe speed

Every vessel shall at all times proceed at a safe speed so that she can take proper and effective action to avoid collision and be stopped within a distance appropriate to the prevailing circumstances and conditions.

In determining a safe speed the following factors shall be among those taken into account:

(a) By all vessels:

 (i) the state of visibility;

 (ii) the traffic density including concentrations of fishing vessels or any other vessels;

 (iii) the manoeuvrability of the vessel with special reference to stopping distance and turning ability in the prevailing conditions;

 (iv) at night the presence of background light such as from shore lights or from back scatter of her own lights;

 (v) the state of wind, sea and current, and the proximity of navigational hazards;

 (vi) the draught in relation to the available depth of water.

(b) Additionally, by vessels with operational radar:

 (i) the characteristics, efficiency and limitations of the radar equipment;

 (ii) any constraints imposed by the radar range scale in use;

 (iii) the effect on radar detection of the sea state, weather and other sources of interference;

 (iv) the possibility that small vessels, ice and other floating objects may not be detected by radar at an adequate range;

 (v) the number, location and movement of vessels detected by radar;

 (vi) the more exact assessment of the visibility that may be possible when radar is used to determine the range of vessels or other objects in the vicinity.

RULE 7

Risk of Collision

(a) Every vessel shall use all available means appropriate to the prevailing circumstances and conditions to determine if risk of collision exists. If there is any doubt such risk shall be deemed to exist.

(b) Proper use shall be made of radar equipment if fitted and operational, including longrange scanning to obtain early warning of risk of collision and radar plotting or equivalent systematic observation of detected objects.

(c) Assumptions shall not be made on the basis of scanty information, especially scanty radar information.

(d) In determining if risk of collision exists the following considerations shall be among those taken into account:

 (i) such risk shall be deemed to exist if the compass bearing of an approaching vessel does not appreciably change;

 (ii) such risk may sometimes exist even when an appreciable bearing change is evident, particularly when approaching a very large vessel or a tow or when approaching a vessel at close range.

RULE 8

Action to avoid collision

(a) Any action taken to avoid collision shall, if the circumstances of the case admit, be positive, made in ample time and with due regard to the observance of good seamanship.

(b) Any alteration of course and/or speed to avoid collision shall, if the circumstances of the case admit, be large enough to be readily apparent to another vessel observing visually or by radar; a succession of small alterations of course and/or speed should be avoided.

(c) If there is sufficient sea room, alteration of course alone may be the most effective action to avoid a closequarters situation provided that it is made in good time, is substantial and does not result in another closequarters situation.

(d) Action taken to avoid collision with another vessel shall be such as to result in passing at a safe distance. The effectiveness of the action shall be carefully checked until the other vessel is finally past and clear.

(e) If necessary to avoid collision or allow more time to assess the situation, a vessel shall slacken her speed or take all way off by stopping or reversing her means of propulsion.

RULE 9

Narrow channels

(a) A vessel proceeding along the course of a narrow channel or fairway shall keep as near to the outer limit of the channel or fairway which lies on her starboard side as is safe and practicable.

(b) A vessel of less than 20 metres in length or a sailing vessel shall not impede the passage of a vessel which can safely navigate only within a narrow channel or fairway.

(c) A vessel engaged in fishing shall not impede the passage of any other vessel navigating within a narrow channel or fairway.

(d) A vessel shall not cross a narrow channel or fairway if such crossing impedes the passage of a vessel which can safely navigate only within such channel or fairway. The latter vessel may use the sound signal prescribed in Rule 34 (d) if in doubt as to the intention of the crossing vessel.

(e) (i) In a narrow channel or fairway when overtaking can take place only if the vessel to be overtaken has to take action to permit safe passing, the vessel intending to overtake shall indicate her intention by sounding the appropriate signal prescribed in Rule 34 (c) (i). The vessel to be overtaken shall, if in agreement, sound the appropriate signal prescribed in Rule 34 (c) (ii) and take steps to permit safe passing. If in doubt she may sound the signals prescribed in Rule 34 (d).

 (ii) This Rule does not relieve the overtaking vessel of her obligation under Rule 13.

(f) A vessel nearing a bend or an area of a narrow channel or fairway where other vessels may be obscured by an intervening obstruction shall navigate with particular alertness and caution and shall sound the appropriate signal prescribed in Rule 34 (e).

(g) Any vessel shall, if the circumstances of the case admit, avoid anchoring in a narrow channel.

RULE 10

Traffic separation schemes

(a) This Rule applies to traffic separation schemes adopted by the Organization.

(b) A vessel using a traffic separation scheme shall:

 (i) proceed in the appropriate traffic lane in the general direction of traffic flow for that lane;

 (ii) so far as practicable keep clear of a traffic separation line or separation zone;

 (iii) normally join or leave a traffic lane at the termination of the lane, but when joining or leaving from the side shall do so at as small an angle to the general direction of traffic flow as practicable.

(c) A vessel shall so far as practicable avoid crossing traffic lanes, but if obliged to do so shall cross as nearly as practicable at right angles to the general direction of traffic flow.

(d) Inshore traffic zones shall not normally be used by through traffic which can safely use the appropriate traffic lane within the adjacent traffic separation scheme.

(e) A vessel, other than a crossing vessel, shall not normally enter a separation zone or cross a separation line except:

 (i) in cases of emergency to avoid immediate danger;

 (ii) to engage in fishing within a separation zone.

(f) A vessel navigating in areas near the termination of traffic separation schemes shall do so with particular caution.

(g) A vessel shall so far as practicable avoid anchoring in a traffic separation scheme or in areas near its terminations.

(h) A vessel not using a traffic separation scheme shall avoid it by as wide a margin as is practicable.

(i) A vessel engaged in fishing shall not impede the passage of any vessel following a traffic lane.

(j) A vessel of less than 20 metres in length or a sailing vessel shall not impede the safe passage of a powerdriven vessel following a traffic lane.

SECTION II—CONDUCT OF VESSELS IN SIGHT OF ONE ANOTHER

RULE 11

Application

Rules in this Section apply to vessels in sight of one another.

RULE 12

Sailing vessels

(a) When two sailing vessels are approaching one another, so as to involve risk of collision, one of them shall keep out of the way of the other as follows:

 (i) when each has the wind on a different side, the vessel which has the wind on the port side shall keep out of the way of the other;

 (ii) when both have the wind on the same side, the vessel which is to windward shall keep out of the way of the vessel which is to leeward;

 (iii) if a vessel with the wind on the port side sees a vessel to windward and cannot determine with certainty whether the other vessel has the wind on the port or on the starboard side, she shall keep out of the way of the other.

(b) For the purposes of this Rule the windward side shall be deemed to be the side opposite to that on which the mainsail is carried or, in the case of a squarerigged vessel, the side opposite to that on which the largest foreandaft sail is carried.

RULE 13

Overtaking

(a) Notwithstanding anything contained in the Rules of this Section any vessel overtaking any other shall keep out of the way of the vessel being overtaken.

(b) A vessel shall be deemed to be overtaking when coming up with another vessel from a direction more than 22.5 degrees abaft her beam, that is, in such a position with reference to the vessel she is overtaking, that at night she would be able to see only the sternlight of that vessel but neither of her sidelights.

(c) When a vessel is in any doubt as to whether she is overtaking another, she shall assume that this is the case and act accordingly.

(d) Any subsequent alteration of the bearing between the two vessels shall not make the overtaking vessel a crossing vessel within the meaning of these Rules or relieve her of the duty of keeping clear of the overtaken vessel until she is finally past and clear.

RULE 14

Head on situation

(a) When two powerdriven vessels are meeting on reciprocal or nearly reciprocal courses so as to involve risk of collision each shall alter her course to starboard so that each shall pass on the port side of the other.

(b) Such a situation shall be deemed to exist when a vessel sees the other ahead or nearly ahead and by night she could see the masthead lights of the other in a line or nearly in a line and/or both sidelights and by day she observes the corresponding aspect of the other vessel.

(c) When a vessel is in any doubt as to whether such a situation exists she shall assume that it does exist and act accordingly.

RULE 15

Crossing Situation

When two powerdriven vessels are crossing so as to involve risk of collision, the vessel which has the other on her own starboard side shall keep out of the way and shall, if the circumstances of the case admit, avoid crossing ahead of the other vessel.

RULE 16

Action by giveway vessel

Every vessel which is directed to keep out of the way of another vessel shall, so far as possible, take early and substantial action to keep well clear.

RULE 17

Action by standon vessel

(a) (i) Where one of two vessels is to keep out of the way the other shall keep her course and speed.

 (ii) The latter vessel may however take action to avoid collision by her manoeuvre alone, as soon as it becomes apparent to her that the vessel required to keep out of the way is not taking appropriate action in compliance with these Rules.

(b) When, from any cause, the vessel required to keep her course and speed finds herself so close that collision cannot be avoided by the action of the giveway vessel alone, she shall take such action as will best aid to avoid collision.

(c) A powerdriven vessel which takes action in a crossing situation in accordance with subparagraph (a) (ii) of this Rule to avoid collision with another powerdriven vessel shall, if the circumstances of the case admit, not alter course to port for a vessel on her own port side.

(d) This Rule does not relieve the giveway vessel of her obligation to keep out of the way.

RULE 18

Responsibilities between vessels

Except where Rules 9, 10 and 13 otherwise require:

(a) A powerdriven vessel underway shall keep out of the way of:

 (i) a vessel not under command;

 (ii) a vessel restricted in her ability to manoeuvre;

 (iii) a vessel engaged in fishing;

 (iv) a sailing vessel.

(b) A sailing vessel underway shall keep out of the way of:

 (i) a vessel not under command;

 (ii) a vessel restricted in her ability to manoeuvre;

 (iii) a vessel engaged in fishing.

(c) A vessel engaged in fishing when underway shall, so far as possible, keep out of the way of:

 (i) a vessel not under command;

 (ii) a vessel restricted in her ability to manoeuvre.

(d) (i) Any vessel other than a vessel not under command or a vessel restricted in her ability to manoeuvre shall, if the circumstances of the case admit, avoid impeding the safe passage of a vessel constrained by her draught, exhibiting the signals in Rule 28.

 (ii) A vessel constrained by her draught shall navigate with particular caution having full regard to her special condition.

(e) A seaplane on the water shall, in general, keep well clear of all vessels and avoid impeding their navigation. In circumstances, however, where risk of collision exists, she shall comply with the Rules of this Part.

SECTION III—CONDUCT OF VESSELS IN RESTRICTED VISIBILITY

RULE 19

Conduct of vessels in restricted visibility

(a) This Rule applies to vessels not in sight of one another when navigating in or near an area of restricted visibility.

(b) Every vessel shall proceed at a safe speed adapted to the prevailing circumstances and conditions of restricted visibility. A powerdriven vessel shall have her engines ready for immediate manoeuvre.

(c) Every vessel shall have due regard to the prevailing circumstances and conditions of restricted visibility when complying with the Rules of Section I of this Part.

(d) A vessel which detects by radar alone the presence of another vessel shall determine if a closequarters situation is developing and/or risk of collision exists. If so, she shall take avoiding action in ample time, provided that when such action consists of an alteration of course, so far as possible the following shall be avoided:

 (i) an alteration of course to port for a vessel forward of the beam, other than for a vessel being overtaken;

 (ii) an alteration of course towards a vessel abeam or abaft the beam.

(e) Except where it has been determined that a risk of collision does not exist, every vessel which hears apparently forward of her beam the fog signal of another vessel, or which cannot avoid a closequarters situation with another vessel forward of her beam, shall reduce her speed to the minimum at which she can be kept on her course. She shall if necessary take all her way off and in any event navigate with extreme caution until danger of collision is over.

PART C—LIGHTS AND SHAPES

RULE 20

Application

(a) Rules in this Part shall be complied with in all weathers.

(b) The Rules concerning lights shall be complied with from sunset to sunrise, and during such times no other lights shall be exhibited, except such lights as cannot be mistaken for the lights specified in these Rules or do not impair their visibility or distinctive character, or interfere with the keeping of a proper lookout.

(c) The lights prescribed by these Rules shall, if carried, also be exhibited from sunrise to sunset in restricted visibility and may be exhibited in all other circumstances when it is deemed necessary.

(d) The Rules concerning shapes shall be complied with by day.

(e) The lights and shapes specified in these Rules shall comply with the provisions of Annex I to these Regulations.

RULE 21

Definitions

(a) “Masthead light” means a white light placed over the fore and aft centreline of the vessel showing an unbroken light over an arc of the horizon of 225 degrees and so fixed as to show the light from right ahead to 22.5 degrees abaft the beam on either side of the vessel.

(b) “Sidelights” means a green light on the starboard side and a red light on the port side each showing an unbroken light over an arc of the horizon of 112.5 degrees and so fixed as to show the light from right ahead to 22.5 degrees abaft the beam on its respective side. In a vessel of less than 20 metres in length the sidelights may be combined in one lantern carried on the fore and aft centreline of the vessel.

(c) “Sternlight” means a white light placed as nearly as practicable at the stern showing an unbroken light over an arc of the horizon of 135 degrees and so fixed as to show the light 67.5 degrees from right aft on each side of the vessel.

(d) “Towing light” means a yellow light having the same characteristics as the “sternlight” defined in paragraph (c) of this Rule.

(e) “Allround light” means a light showing an unbroken light over an arc of the horizon of 360 degrees.

(f) “Flashing light” means a light flashing at regular intervals at a frequency of 120 flashes or more per minute.

RULE 22

Visibility of Lights

The lights prescribed in these Rules shall have an intensity as specified in Section 8 of Annex I to these Regulations so as to be visible at the following minimum ranges:

(a) In vessels of 50 metres or more in length:

 —a masthead light, 6 miles;

 —a sidelight, 3 miles;

 —a sternlight, 3 miles;

 —a towing light, 3 miles;

 —a white, red, green or yellow allround light, 3 miles.

(b) In vessels of 12 metres or more in length but less than 50 metres in length:

—a masthead light, 5 miles; except that where the length of the vessel is less than 20 metres, 3 miles;

—a sidelight, 2 miles;

—a sternlight, 2 miles;

—a towing light, 2 miles;

—a white, red, green or yellow allround light, 2 miles.

(c) In vessels of less than 12 metres in length:

—a masthead light, 2 miles;

—a sidelight, 1 mile;

—a sternlight, 2 miles;

—a towing light, 2 miles;

—a white, red, green or yellow allround light, 2 miles.

RULE 23

Powerdriven vessels underway

(a) A powerdriven vessel underway shall exhibit:

 (i) a masthead light forward;

 (ii) a second masthead light abaft of and higher than the forward one; except that a vessel of less than 50 metres in length shall not be obliged to exhibit such light but may do so;

 (iii) sidelights;

 (iv) a sternlight.

(b) An aircushion vessel when operating in the nondisplacement mode shall, in addition to the lights prescribed in paragraph (a) of this Rule, exhibit an allround flashing yellow light.

(c) A powerdriven vessel of less than 7 metres in length and whose maximum speed does not exceed 7 knots may, in lieu of the lights prescribed in paragraph (a) of this Rule, exhibit an allround white light. Such vessel shall, if practicable, also exhibit sidelights.

RULE 24

Towing and pushing

(a) A powerdriven vessel when towing shall exhibit:

 (i) instead of the light prescribed in Rule 23 (a) (i), two masthead lights forward in a vertical line. When the length of the tow, measuring from the stern of the towing vessel to the after end of the tow exceeds 200 metres, three such lights in a vertical line;

 (ii) sidelights;

 (iii) a sternlight;

 (iv) a towing light in a vertical line above the sternlight;

 (v) when the length of the tow exceeds 200 metres, a diamond shape where it can best be seen.

(b) When a pushing vessel and a vessel being pushed ahead are rigidly connected in a composite unit they shall be regarded as a powerdriven vessel and exhibit the lights prescribed in Rule 23.

(c) A powerdriven vessel when pushing ahead or towing alongside, except in the case of a composite unit, shall exhibit:

 (i) instead of the light prescribed in Rule 23 (a) (i), two masthead lights forward in a vertical line;

 (ii) sidelights;

 (iii) a sternlight.

(d) A powerdriven vessel to which paragraphs (a) and (c) of this Rule apply shall also comply with Rule 23 (a) (ii).

(e) A vessel or object being towed shall exhibit:

 (i) sidelights;

 (ii) a sternlight;

 (iii) when the length of the tow exceeds 200 metres, a diamond shape where it can best be seen.

(f) Provided that any number of vessels being towed alongside or pushed in a group shall be lighted as one vessel,

 (i) a vessel being pushed ahead, not being part of a composite unit, shall exhibit at the forward end, sidelights;

 (ii) a vessel being towed alongside shall exhibit a sternlight and at the forward end, sidelights.

(g) Where from any sufficient cause it is impracticable for a vessel or object being towed to exhibit the lights prescribed in paragraph (e) of this Rule, all possible measures shall be taken to light the vessel or object towed or at least to indicate the presence of the unlighted vessel or object.

RULE 25

Sailing vessels underway and vessels under oars

(a) A sailing vessel underway shall exhibit:

 (i) sidelights;

 (ii) a sternlight.

(b) In a sailing vessel of less than 12 metres in length the lights prescribed in paragraph (a) of this Rule may be combined in one lantern carried at or near the top of the mast where it can best be seen.

(c) A sailing vessel underway may, in addition to the lights prescribed in paragraph (a) of this Rule, exhibit at or near the top of the mast, where they can best be seen, two allround lights in a vertical line, the upper being red and the lower green, but these lights shall not be exhibited in conjunction with the combined lantern permitted by paragraph (b) of this Rule.

(d) (i) A sailing vessel of less than 7 metres in length shall, if practicable, exhibit the lights prescribed in paragraph (a) or (b) of this Rule, but if she does not, she shall have ready at hand an electric torch or lighted lantern showing a white light which shall be exhibited in sufficient time to prevent collision.

 (ii) A vessel under oars may exhibit the lights prescribed in this Rule for sailing vessels, but if she does not, she shall have ready at hand an electric torch or lighted lantern showing a white light which shall be exhibited in sufficient time to prevent collision.

(e) A vessel proceeding under sail when also being propelled by machinery shall exhibit forward where it can best be seen a conical shape, apex downwards.

RULE 26

Fishing vessels

(a) A vessel engaged in fishing, whether underway or at anchor, shall exhibit only the lights and shapes prescribed in this Rule.

(b) A vessel when engaged in trawling, by which is meant the dragging through the water of a dredge net or other apparatus used as a fishing appliance, shall exhibit:

 (i) two allround lights in a vertical line, the upper being green and the lower white, or a shape consisting of two cones with their apexes together in a vertical line one above the other; a vessel of less than 20 metres in length may instead of this shape exhibit a basket;

 (ii) a masthead light abaft of and higher than the allround green light; a vessel of less than 50 metres in length shall not be obliged to exhibit such a light but may do so;

 (iii) when making way through the water, in addition to the lights prescribed in this paragraph, sidelights and a sternlight.

(c) A vessel engaged in fishing, other than trawling, shall exhibit:

 (i) two allround lights in a vertical line, the upper being red and the lower white, or a shape consisting of two cones with apexes together in a vertical line one above the other; a vessel of less than 20 metres in length may instead of this shape exhibit a basket;

 (ii) when there is outlying gear extending more than 150 metres horizontally from the vessel, an allround white light or a cone apex upwards in the direction of the gear;

 (iii) when making way through the water, in addition to the lights prescribed in this paragraph, sidelights and a sternlight.

(d) A vessel engaged in fishing in close proximity to other vessels engaged in fishing may exhibit the additional signals described in Annex II to these Regulations.

(e) A vessel when not engaged in fishing shall not exhibit the lights or shapes prescribed in this Rule, but only those prescribed for a vessel of her length.

RULE 27

Vessels not under command or restricted in their ability to manoeuvre

(a) A vessel not under command shall exhibit:

 (i) two allround red lights in a vertical line where they can best be seen;

 (ii) two balls or similar shapes in a vertical line where they can best be seen;

 (iii) when making way through the water, in addition to the lights prescribed in this paragraph, sidelights and a sternlight.

(b) A vessel restricted in her ability to manoeuvre, except a vessel engaged in minesweeping operations, shall exhibit:

 (i) three allround lights in a vertical line where they can best be seen. The highest and lowest of these lights shall be red and the middle light shall be white;

 (ii) three shapes in a vertical line where they can best be seen. The highest and lowest of these shapes shall be balls and the middle one a diamond;

 (iii) when making way through the water, masthead lights, sidelights and a sternlight, in addition to the lights prescribed in subparagraph (i);

 (iv) when at anchor, in addition to the lights or shapes prescribed in subparagraphs (i) and (ii), the light, lights or shape prescribed in Rule 30.

(c) A vessel engaged in a towing operation such as renders her unable to deviate from her course shall, in addition to the lights or shapes prescribed in subparagraphs (b) (i) and (ii) of this Rule, exhibit the lights or shape prescribed in Rule 24 (a).

(d) A vessel engaged in dredging or underwater operations, when restricted in her ability to manoeuvre, shall exhibit the lights and shapes prescribed in paragraph (b) of this Rule and shall in addition, when an obstruction exists, exhibit:

 (i) two allround red lights or two balls in a vertical line to indicate the side on which the obstruction exists;

 (ii) two allround green lights or two diamonds in a vertical line to indicate the side on which another vessel may pass;

 (iii) when making way through the water, in addition to the lights prescribed in this paragraph, masthead lights, sidelights and a sternlight;

 (iv) a vessel to which this paragraph applies when at anchor shall exhibit the lights or shapes prescribed in subparagraphs (i) and (ii) instead of the lights or shape prescribed in Rule 30.

(e) Whenever the size of a vessel engaged in diving operations makes it impracticable to exhibit the shapes prescribed in paragraph (d) of this Rule, a rigid replica of the International Code flag “A” not less than 1 metre in height shall be exhibited. Measures shall be taken to ensure allround visibility.

(f) A vessel engaged in minesweeping operations shall, in addition to the lights prescribed for a powerdriven vessel in Rule 23, exhibit three allround green lights or three balls. One of these lights or shapes shall be exhibited at or near the foremast head and one at each end of the fore yard. These lights or shapes indicate that it is dangerous for another vessel to approach closer than 1,000 metres astern or 500 metres on either side of the minesweeper.

(g) Vessels of less than 7 metres in length shall not be required to exhibit the lights prescribed in this Rule.

(h) The signals prescribed in this Rule are not signals of vessels in distress and requiring assistance. Such signals are contained in Annex IV to these Regulations.

RULE 28

Vessels constrained by their draught

A vessel constrained by her draught may, in addition to the lights prescribed for powerdriven vessels in Rule 23, exhibit where they can best be seen three allround red lights in a vertical line, or a cylinder.

RULE 29

Pilot vessels

(a) A vessel engaged on pilotage duty shall exhibit:

 (i) at or near the masthead, two allround lights in a vertical line, the upper being white and the lower red;

 (ii) when underway, in addition, sidelights and a sternlight;

 (iii) when at anchor, in addition to the lights prescribed in subparagraph (i), the anchor light, lights or shape.

(b) A pilot vessel when not engaged on pilotage duty shall exhibit the lights or shapes prescribed for a similar vessel of her length.

RULE 30

Anchored vessels and vessels aground

(a) A vessel at anchor shall exhibit where it can best be seen:

 (i) in the fore part, an allround white light or one ball;

 (ii) at or near the stern and at a lower level than the light prescribed in subparagraph (i), an allround white light.

(b) A vessel of less than 50 metres in length may exhibit an allround white light where it can best be seen instead of the lights prescribed in paragraph (a) of this Rule.

(c) A vessel at anchor may, and a vessel of 100 metres and more in length shall, also use the available working or equivalent lights to illuminate her decks.

(d) A vessel aground shall exhibit the lights prescribed in paragraph (a) or (b) of this Rule and in addition, where they can best be seen:

 (i) two allround red lights in a vertical line;

 (ii) three balls in a vertical line.

(e) A vessel of less than 7 metres in length, when at anchor or aground, not in or near a narrow channel, fairway or anchorage, or where other vessels normally navigate, shall not be required to exhibit the lights or shapes prescribed in paragraphs (a), (b) or (d) of this Rule.

RULE 31

Seaplanes

Where it is impracticable for a seaplane to exhibit lights and shapes of the characteristics or in the positions prescribed in the Rules of this Part she shall exhibit lights and shapes as closely similar in characteristics and position as is possible.

PART D—SOUND AND LIGHT SIGNALS

RULE 32

Definitions

(a) The word “whistle” means any sound signalling appliance capable of producing the prescribed blasts and which complies with the specifications in Annex III to these Regulations.

(b) The term “short blast” means a blast of about one second’s duration.

(c) The term “prolonged blast” means a blast of from four to six seconds’ duration.

RULE 33

Equipment for sound signals

(a) A vessel of 12 metres or more in length shall be provided with a whistle and a bell and a vessel of 100 metres or more in length shall, in addition, be provided with a gong, the tone and sound of which cannot be confused with that of the bell. The whistle, bell and gong shall comply with the specifications in Annex III to these Regulations. The bell or gong or both may be replaced by other equipment having the same respective sound characteristics, provided that manual sounding of the required signals shall always be possible.

(b) A vessel of less than 12 metres in length shall not be obliged to carry the sound signalling appliances prescribed in paragraph (a) of this Rule but if she does not, she shall be provided with some other means of making an efficient sound signal.

RULE 34

Manoeuvring and warning signals

(a) When vessels are in sight of one another, a powerdriven vessel underway, when manoeuvring as authorized or required by these Rules, shall indicate that manoeuvre by the following signals on her whistle:

 —one short blast to mean “I am altering my course to starboard”;

 —two short blasts to mean “I am altering my course to port”;

 —three short blasts to mean “I am operating astern propulsion”.

(b) Any vessel may supplement the whistle signals prescribed in paragraph (a) of this Rule by light signals, repeated as appropriate, whilst the manoeuvre is being carried out:

 (i) these light signals shall have the following significance:

  —one flash to mean “I am altering my course to starboard”;

  —two flashes to mean “I am altering my course to port”;

  —three flashes to mean “I am operating astern propulsion”;

 (ii) the duration of each flash shall be about one second, the interval between flashes shall be about one second, and the interval between successive signals shall be not less than ten seconds;

 (iii) the light used for this signal shall, if fitted, be an allround white light, visible at a minimum range of 5 miles, and shall comply with the provisions of Annex I.

(c) When in sight of one another in a narrow channel or fairway:

 (i) a vessel intending to overtake another shall in compliance with Rule 9 (e) (i) indicate her intention by the following signals on her whistle:

 —two prolonged blasts followed by one short blast to mean “I intend to overtake you on your starboard side”;

 —two prolonged blasts followed by two short blasts to mean “I intend to overtake you on your port side”;

 (ii) the vessel about to be overtaken when acting in accordance with Rule 9 (e) (i) shall indicate her agreement by the following signal on her whistle:

 —one prolonged, one short, one prolonged and one short blast, in that order.

(d) When vessels in sight of one another are approaching each other and from any cause either vessel fails to understand the intentions or actions of the other, or is in doubt whether sufficient action is being taken by the other to avoid collision, the vessel in doubt shall immediately indicate such doubt by giving at least five short and rapid blasts on the whistle. Such signal may be supplemented by a light signal of at least five short and rapid flashes.

(e) A vessel nearing a bend or an area of a channel or fairway where other vessels may be obscured by an intervening obstruction shall sound one prolonged blast. Such signal shall be answered with a prolonged blast by any approaching vessel that may be within hearing around the bend or behind the intervening obstruction.

(f) If whistles are fitted on a vessel at a distance apart of more than 100 metres, one whistle only shall be used for giving manoeuvring and warning signals.

RULE 35

Sound signals in restricted visibility

In or near an area of restricted visibility, whether by day or night, the signals prescribed in this Rule shall be used as follows:

 (a) A powerdriven vessel making way through the water shall sound at intervals of not more than 2 minutes one prolonged blast.

 (b) A powerdriven vessel underway but stopped and making no way through the water shall sound at intervals of not more than 2 minutes two prolonged blasts in succession with an interval of about 2 seconds between them.

 (c) A vessel not under command, a vessel restricted in her ability to manoeuvre, a vessel constrained by her draught, a sailing vessel, a vessel engaged in fishing and a vessel engaged in towing or pushing another vessel shall, instead of the signals prescribed in paragraphs (a) or (b) of this Rule, sound at intervals of not more than 2 minutes three blasts in succession, namely one prolonged followed by two short blasts.

 (d) A vessel towed or if more than one vessel is towed the last vessel of the tow, if manned, shall at intervals of not more than 2 minutes sound four blasts in succession, namely one prolonged followed by three short blasts. When practicable, this signal shall be made immediately after the signal made by the towing vessel.

 (e) When a pushing vessel and a vessel being pushed ahead are rigidly connected in a composite unit they shall be regarded as a powerdriven vessel and shall give the signals prescribed in paragraphs (a) or (b) of this Rule.

 (f) A vessel at anchor shall at intervals of not more than one minute ring the bell rapidly for about 5 seconds. In a vessel of 100 metres or more in length the bell shall be sounded in the forepart of the vessel and immediately after the ringing of the bell the gong shall be sounded rapidly for about 5 seconds in the after part of the vessel. A vessel at anchor may in addition sound three blasts in succession, namely one short, one prolonged and one short blast, to give warning of her position and of the possibility of collision to an approaching vessel.

 (g) A vessel aground shall give the bell signal and if required the gong signal prescribed in paragraph (f) of this Rule and shall, in addition, give three separate and distinct strokes on the bell immediately before and after the rapid ringing of the bell. A vessel aground may in addition sound an appropriate whistle signal.

 (h) A vessel of less than 12 metres in length shall not be obliged to give the abovementioned signals but, if she does not, shall make some other efficient sound signal at intervals of not more than 2 minutes.

 (i) A pilot vessel when engaged on pilotage duty may in addition to the signals prescribed in paragraphs (a), (b) or (f) of this Rule sound an identity signal consisting of four short blasts.

RULE 36

Signals to attract attention

If necessary to attract the attention of another vessel any vessel may make light or sound signals that cannot be mistaken for any signal authorized elsewhere in these Rules, or may direct the beam of her searchlight in the direction of the danger, in such a way as not to embarrass any vessel.

RULE 37

Distress signals

When a vessel is in distress and requires assistance she shall use or exhibit the signals prescribed in Annex IV to these Regulations.

PART E—EXEMPTIONS

RULE 38

Exemptions

Any vessel (or class of vessels) provided that she complies with the requirements of the International Regulations for Preventing Collisions at Sea, 1960, the keel of which is laid or which is at a corresponding stage of construction before the entry into force of these Regulations may be exempted from compliance therewith as follows:

 (a) The installation of lights with ranges prescribed in Rule 22, until four years after the date of entry into force of these Regulations.

 (b) The installation of lights with colour specifications as prescribed in Section 7 of Annex I to these Regulations, until four years after the date of entry into force of these Regulations.

 (c) The repositioning of lights as a result of conversion from Imperial to metric units and rounding off measurement figures, permanent exemption.

 (d) (i) The repositioning of masthead lights on vessels of less than 150 metres in length, resulting from the prescriptions of Section 3 (a) of Annex I, permanent exemption.

 (ii) The repositioning of masthead lights on vessels of 150 metres or more in length, resulting from the prescriptions of Section 3 (a) of Annex I to these Regulations, until nine years after the date of entry into force of these Regulations.

 (e) The repositioning of masthead lights resulting from the prescriptions of Section 2 (b) of Annex I, until nine years after the date of entry into force of these Regulations.

 (f) The repositioning of sidelights resulting from the prescriptions of Sections 2 (g) and 3 (b) of Annex I, until nine years after the date of entry into force of these Regulations.

 (g) The requirements for sound signal appliances prescribed in Annex III, until nine years after the date of entry into force of these Regulations.


ANNEX I

POSITIONING AND TECHNICAL DETAILS OF LIGHTS AND SHAPES

1. Definition

 The term “height above the hull” means height above the uppermost continuous deck.

2. Vertical positioning and spacing of lights

 (a) On a powerdriven vessel of 20 metres or more in length the masthead lights shall be placed as follows:

 (i) the forward masthead light, or if only one masthead light is carried, then that light, at a height above the hull of not less than 6 metres, and, if the breadth of the vessel exceeds 6 metres, then at a height above the hull not less than such breadth, so however that the light need not be placed at a greater height above the hull than 12 metres;

 (ii) when two masthead lights are carried the after one shall be at least 4.5 metres vertically higher than the forward one.

 (b) The vertical separation of masthead lights of powerdriven vessels shall be such that in all normal conditions of trim the after light will be seen over and separate from the forward light at a distance of 1000 metres from the stem when viewed from sea level.

 (c) The masthead light of a powerdriven vessel of 12 metres but less than 20 metres in length shall be placed at a height above the gunwale of not less than 2.5 metres.

 (d) A powerdriven vessel of less than 12 metres in length may carry the uppermost light at a height of less than 2.5 metres above the gunwale. When however a masthead light is carried in addition to sidelights and a sternlight, then such masthead light shall be carried at least 1 metre higher than the sidelights.

 (e) One of the two or three masthead lights prescribed for a powerdriven vessel when engaged in towing or pushing another vessel shall be placed in the same position as the forward masthead light of a powerdriven vessel.

 (f) In all circumstances the masthead light or lights shall be so placed as to be above and clear of all other lights and obstructions.

 (g) The sidelights of a powerdriven vessel shall be placed at a height above the hull not greater than three quarters of that of the forward masthead light. They shall not be so low as to be interfered with by deck lights.

 (h) The sidelights, if in a combined lantern and carried on a powerdriven vessel of less than 20 metres in length, shall be placed not less than 1 metre below the masthead light.

 (i) When the Rules prescribe two or three lights to be carried in a vertical line, they shall be spaced as follows:

 (i) on a vessel of 20 metres in length or more such lights shall be spaced not less than 2 metres apart, and the lowest of these lights shall, except where a towing light is required, not be less than 4 metres above the hull;

 (ii) on a vessel of less than 20 metres in length such lights shall be spaced not less than 1 metre apart and the lowest of these lights shall, except where a towing light is required, not be less than 2 metres above the gunwale;

 (iii) when three lights are carried they shall be equally spaced.

 (j) The lower of the two allround lights prescribed for a fishing vessel when engaged in fishing shall be at a height above the sidelights not less than twice the distance between the two vertical lights.

 (k) The forward anchor light, when two are carried, shall not be less than 4.5 metres above the after one. On a vessel of 50 metres or more in length this forward anchor light shall not be less than 6 metres above the hull.

3. Horizontal positioning and spacing of lights

 (a) When two masthead lights are prescribed for a powerdriven vessel, the horizontal distance between them shall not be less than one half of the length of the vessel but need not be more than 100 metres. The forward light shall be placed not more than one quarter of the length of the vessel from the stem.

 (b) On a vessel of 20 metres or more in length the sidelights shall not be placed in front of the forward masthead lights. They shall be placed at or near the side of the vessel.

4. Details of location of directionindicating lights for fishing vessels, dredgers and vessels engaged in underwater operations

 (a) The light indicating the direction of the outlying gear from a vessel engaged in fishing as prescribed in Rule 26 (c) (ii) shall be placed at a horizontal distance of not less than 2 metres and not more than 6 metres away from the two allround red and white lights. This light shall be placed not higher than the allround white light prescribed in Rule 26 (c) (i) and not lower than the sidelights.

 (b) The lights and shapes on a vessel engaged in dredging or underwater operations to indicate the obstructed side and/or the side on which it is safe to pass, as prescribed in Rule 27 (d) (i) and (ii), shall be placed at the maximum practical horizontal distance, but in no case less than 2 metres, from the lights or shapes prescribed in Rule 27 (b) (i) and (ii). In no case shall the upper of these lights or shapes be at a greater height than the lower of the three lights or shapes prescribed in Rule 27 (b) (i) and (ii).

5. Screens for sidelights

The sidelights shall be fitted with inboard screens painted matt black, and meeting the requirements of Section 9 of this Annex. With a combined lantern, using a single vertical filament and a very narrow division between the green and red sections, external screens need not be fitted.

6. Shapes

 (a) Shapes shall be black and of the following sizes:

 (i) a ball shall have a diameter of not less than 0.6 metre;

 (ii) a cone shall have a base diameter of not less than 0.6 metre and a height equal to its diameter;

 (iii) a cylinder shall have a diameter of at least 0.6 metre and a height of twice its diameter;

 (iv) a diamond shape shall consist of two cones as defined in (ii) above having a common base.

 (b) The vertical distance between shapes shall be at least 1.5 metres.

 (c) In a vessel of less than 20 metres in length shapes of lesser dimensions but commensurate with the size of the vessel may be used and the distance apart may be correspondingly reduced.

7. Colour specification of lights

The chromaticity of all navigation lights shall conform to the following standards, which lie within the boundaries of the area of the diagram specified for each colour by the International Commission on Illumination (CIE).

The boundaries of the area for each colour are given by indicating the corner coordinates, which are as follows:

 (i) White

x

0.525

0.525

0.452

0.310

0.310

0.443

y

0.382

0.440

0.440

0.348

0.283

0.382

 (ii) Green

x

0.028

0.009

0.300

0.203

y

0.385

0.723

0.511

0.356

 (iii) Red

x

0.680

0.660

0.735

0.721

y

0.320

0.320

0.265

0.259

 (iv) Yellow

x

0.612

0.618

0.575

0.575

y

0.382

0.382

0.425

0.406

8. Intensity of lights

 (a) The minimum luminous intensity of lights shall be calculated by using the formula:

  where I is luminous intensity in candelas under service conditions,

T is threshold factor

D is range of visibility (luminous range) of the light in nautical miles,

K is atmospheric transmissivity.

For prescribed lights the value of K shall be 0.8, corresponding to a meteorological visibility of approximately 13 nautical miles.

 (b) A selection of figures derived from the formula is given in the following table:

Range of visibility (luminous range) of light in nautical miles

Luminous intensity of light in candelas for K = 0.8

D

I 

1

0.9

2

4.3

3

  12

4

  27

5

  52

6

  94

NOTE: The maximum luminous intensity of navigation lights should be limited to avoid undue glare.

9. Horizontal Sectors

 (a) (i) In the forward direction, sidelights as fitted on the vessel must show the minimum required intensities. The intensities must decrease to reach practical cutoff between 1 degree and 3 degrees outside the prescribed sectors.

 (ii) For sternlights and masthead lights and at 22.5 degrees abaft the beam for sidelights, the minimum required intensities shall be maintained over the arc of the horizon up to 5 degrees within the limits of the sectors prescribed in Rule 21. From 5 degrees within the prescribed sectors the intensity may decrease by 50 per cent up to the prescribed limits; it shall decrease steadily to reach practical cutoff at not more than 5 degrees outside the prescribed limits.

 (b) Allround lights shall be so located as not to be obscured by masts, topmasts or structures within angular sectors of more than 6 degrees, except anchor lights, which need not be placed at an impracticable height above the hull.

10. Vertical Sectors

 (a) The vertical sectors of electric lights, with the exception of lights on sailing vessels shall ensure that:

 (i) at least the required minimum intensity is maintained at all angles from 5 degrees above to 5 degrees below the horizontal;

 (ii) at least 60 per cent of the required minimum intensity is maintained from 7.5 degrees above to 7.5 degrees below the horizontal.

 (b) In the case of sailing vessels the vertical sectors of electric lights shall ensure that:

 (i) at least the required minimum intensity is maintained at all angles from 5 degrees above to 5 degrees below the horizontal;

 (ii) at least 50 per cent of the required minimum intensity is maintained from 25 degrees above to 25 degrees below the horizontal.

 (c) In the case of lights other than electric these specifications shall be met as closely as possible.

11. Intensity of nonelectric lights

Nonelectric lights shall so far as practicable comply with the minimum intensities, as specified in the Table given in Section 8 of this Annex.

12. Manoeuvring light

Notwithstanding the provisions of paragraph 2 (f) of this Annex the manoeuvring light described in Rule 34 (b) shall be placed in the same fore and aft vertical plane as the masthead light or lights and, where practicable, at a minimum height of 2 metres vertically above the forward masthead light, provided that it shall be carried not less than 2 metres vertically above or below the after masthead light. On a vessel where only one masthead light is carried the manoeuvring light, if fitted, shall be carried where it can best be seen, not less than 2 metres vertically apart from the masthead light.

13. Approval

The construction of lanterns and shapes and the installation of lanterns on board the vessel shall be to the satisfaction of the appropriate authority of the State where the vessel is registered.


ANNEX II

ADDITIONAL SIGNALS FOR FISHING VESSELS FISHING IN CLOSE PROXIMITY

1. General

The lights mentioned herein shall, if exhibited in pursuance of Rule 26 (d), be placed where they can best be seen. They shall be at least 0.9 metre apart but at a lower level than lights prescribed in Rule 26 (b) (i) and (c) (i). The lights shall be visible all round the horizon at a distance of at least 1 mile but at a lesser distance than the lights prescribed by these Rules for fishing vessels.

2. Signals for Trawlers

 (a) Vessels when engaged in trawling, whether using demersal or pelagic gear, may exhibit:

 (i) when shooting their nets: two white lights in a vertical line;

 (ii) when hauling their nets: one white light over one red light in a vertical line;

 (iii) when the net has come fast upon an obstruction: two red lights in a vertical line.

 (b) Each vessel engaged in pair trawling may exhibit:

 (i) by night, a searchlight directed forward and in the direction of the other vessel of the pair;

 (ii) when shooting or hauling their nets or when their nets have come fast upon an obstruction, the lights prescribed in 2 (a) above.

3. Signals for purse seiners

Vessels engaged in fishing with purse seine gear may exhibit two yellow lights in a vertical line. These lights shall flash alternately every second and with equal light and occultation duration. These lights may be exhibited only when the vessel is hampered by its fishing gear.


ANNEX III

TECHNICAL DETAILS OF SOUND SIGNAL APPLIANCES

1. Whistles

 (a) Frequencies and range of audibility The fundamental frequency of the signal shall lie within the range 70–700 Hz.

The range of audibility of the signal from a whistle shall be determined by those frequencies, which may include the fundamental and/or one or more higher frequencies, which lie within the range 180–700 Hz ( 1 per cent) and which provide the sound pressure levels specified in paragraph 1 (c) below.

 (b) Limits of fundamental frequencies To ensure a wide variety of whistle characteristics, the fundamental frequency of a whistle shall be between the following limits:

 (i) 70–200 Hz, for a vessel 200 metres or more in length;

 (ii) 130–350 Hz, for a vessel 75 metres but less than 200 metres in length;

 (iii) 250–700 Hz, for a vessel less than 75 metres in length.

 (c) Sound signal intensity and range of audibility A whistle fitted in a vessel shall provide, in the direction of maximum intensity of the whistle and at a distance of 1 metre from it, a sound pressure level in at least one 1/3rdoctave band within the range of frequencies 180–700 Hz (1 per cent) of not less than the appropriate figure given in the table below.



Length of vessel in metres

 

1/3rdoctave band level at 1 metre in dB referred to



Audibility range in nautical miles

200 or more ..........

143

2

75 but less than 200 .....

138

  1.5

20 but less than 75.......

130

1

Less than 20 ..........

120

  0.5

The range of audibility in the table above is for information and is approximately the range at which a whistle may be heard on its forward axis with 90 per cent probability in conditions of still air on board a vessel having average background noise level at the listening posts (taken to be 68 dB in the octave band centred on 250 Hz and 63 dB in the octave band centred on 500 Hz).

In practice the range at which a whistle may be heard is extremely variable and depends critically on weather conditions; the values given can be regarded as typical but under conditions of strong wind or high ambient noise level at the listening post the range may be much reduced.

 (d) Directional properties The sound pressure level of a directional whistle shall be not more than 4 dB below the sound pressure level on the axis at any direction in the horizontal plane within 45 degrees of the axis. The sound pressure level at any other direction in the horizontal plane shall be not more than 10 dB below the sound pressure level on the axis, so that the range in any direction will be at least half the range on the forward axis. The sound pressure level shall be measured in that 1/3rdoctave band which determines the audibility range.

 (e) Positioning of whistles When a directional whistle is to be used as the only whistle on a vessel, it shall be installed with its maximum intensity directed straight ahead.

A whistle shall be placed as high as practicable on a vessel, in order to reduce interception of the emitted sound by obstructions and also to minimize hearing damage risk to personnel. The sound pressure level of the vessel’s own signal at listening posts shall not exceed 110 dB (A) and so far as practicable should not exceed 100 dB (A).

 (f) Fitting of more than one whistle If whistles are fitted at a distance apart of more than 100 metres, it shall be so arranged that they are not sounded simultaneously.

 (g) Combined whistle systems If due to the presence of obstructions the sound field of a single whistle or of one of the whistles referred to in paragraph 1 (f) above is likely to have a zone of greatly reduced signal level, it is recommended that a combined whistle system be fitted so as to overcome this reduction. For the purposes of the Rules a combined whistle system is to be regarded as a single whistle. The whistles of a combined system shall be located at a distance apart of not more than 100 metres and arranged to be sounded simultaneously. The frequency of any one whistle shall differ from those of the others by at least 10 Hz.

2. Bell or gong

 (a) Intensity of signal A bell or gong, or other device having similar sound characteristics shall produce a sound pressure level of not less than 110 dB at 1 metre.

 (b) Construction Bells and gongs shall be made of corrosionresistant material and designed to give a clear tone. The diameter of the mouth of the bell shall be not less than 300 mm for vessels of more than 20 metres in length, and shall be not less than 200 mm for vessels of 12 to 20 metres in length. Where practicable, a powerdriven bell striker is recommended to ensure constant force but manual operation shall be possible. The mass of the striker shall be not less than 3 per cent of the mass of the bell.

3. Approval

The construction of sound signal appliances, their performance and their installation on board the vessel shall be to the satisfaction of the appropriate authority of the State where the vessel is registered.


ANNEX IV

DISTRESS SIGNALS

1. The following signals, used or exhibited either together or separately, indicate distress and need of assistance:

 (a) a gun or other explosive signal fired at intervals of about a minute;

 (b) a continuous sounding with any fogsignalling apparatus;

 (c) rockets or shells, throwing red stars fired one at a time at short intervals;

 (d) a signal made by radiotelegraphy or by any other signalling method consisting of the group . . . . . . (SOS) in the Morse Code;

 (e) a signal sent by radiotelephony consisting of the spoken word “Mayday”;

 (f) the International Code Signal of distress indicated by N.C.;

 (g) a signal consisting of a square flag having above or below it a ball or anything resembling a ball;

 (h) flames on the vessel (as from a burning tar barrel, oil barrel, etc.);

 (i) a rocket parachute flare or a hand flare showing a red light;

 (j) a smoke signal giving off orangecoloured smoke;

 (k) slowly and repeatedly raising and lowering arms outstretched to each side;

 (l) the radiotelegraph alarm signal;

 (m) the radiotelephone alarm signal;

 (n) signals transmitted by emergency positionindicating radio beacons.

2. The use or exhibition of any of the foregoing signals except for the purpose of indicating distress and need of assistance and the use of other signals which may be confused with any of the above signals is prohibited.

3. Attention is drawn to the relevant sections of the International Code of Signals, the Merchant Ship Search and Rescue Manual and the following signals:

 (a) a piece of orangecoloured canvas with either a black square and circle or other appropriate symbol (for identification from the air);

 (b) a dye marker.

Schedule 4Articles of, and Annexes to, the Load Line Convention

Section 187A

ARTICLE 1

General Obligation under the Convention

(1) The Contracting Governments undertake to give effect to the provisions of the present Convention and the Annexes hereto which shall constitute an integral part of the present Convention. Every reference to the present Convention constitutes at the same time a reference to Annexes.

(2) The Contracting Governments shall undertake all measures which may be necessary to give effect to the present Convention.

ARTICLE 2

Definitions

For the purpose of the present Convention, unless expressly provided otherwise:

(1) “Regulations” means the Regulations annexed to the present Convention.

(2) “Administration” means the Government of the State whose flag the ship is flying.

(3) “Approved” means approved by the Administration.

(4) “International voyage” means a sea voyage from a country to which the present Convention applies to a port outside such country, or conversely. For this purpose, every territory for the international relations of which a Contracting Government is responsible or for which the United Nations are the administering authority is regarded as a separate country.

(5) A “fishing vessel” is a ship used for catching fish, whales, seals, walrus or other living resources of the sea.

(6) “New ship” means a ship the keel of which is laid, or which is at a similar stage of construction, on or after the date of coming into force of the present Convention for each Contracting Government.

(7) “Existing ship” means a ship which is not a new ship.

(8) “Length” means 96 per cent of the total length on a waterline at 85 per cent of the least moulded depth measured from the top of the keel, or the length from the fore side of the stem to the axis of the rudder stock on that waterline, if that be greater. In ships designed with a rake of keel the waterline on which this length is measured shall be parallel to the designed waterline.

ARTICLE 3

General Provisions

(1) No ship to which the present Convention applies shall proceed to sea on an international voyage after the date on which the present Convention comes into force unless it has been surveyed, marked and provided with an International Load Line Certificate (1966) or, where appropriate, an International Load Line Exemption Certificate in accordance with the provisions of the present Convention.

(2) Nothing in this Convention shall prevent an Administration from assigning a greater freeboard than the minimum freeboard determined in accordance with Annex I.

ARTICLE 4

Application

(1) The present Convention shall apply to:

 (a) ships registered in countries the Governments of which are Contracting Governments;

 (b) ships registered in territories to which the present Convention is extended under Article 32; and

 (c) unregistered ships flying the flag of a State, the Government of which is a Contracting Government.

(2) The present Convention shall apply to ships engaged on international voyages.

(3) The Regulations contained in Annex I are specifically applicable to new ships.

(4) Existing ships which do not fully comply with the requirements of the Regulations contained in Annex I or any part thereof shall meet at least such lesser related requirements as the Administration applied to ships on international voyages prior to the coming into force of the present Convention; in no case shall such ships be required to increase their freeboards. In order to take advantage of any reduction in freeboard from that previously assigned, existing ships shall comply with all requirements of the present Convention.

(5) The Regulations contained in Annex II are applicable to new and existing ships to which the present Convention applies.

ARTICLE 5

Exemptions

(1) The present Convention shall not apply to:

 (a) ships of war;

 (b) new ships of less than 24 metres (79 feet) in length;

 (c) existing ships of less than 150 tons gross;

 (d) pleasure yachts not engaged in trade;

 (e) fishing vessels.

(2) Nothing herein shall apply to ships solely navigating:

 (a) the Great Lakes of North America and the River St. Lawrence as far east as a rhumb line drawn from Cap des Rosiers to West Point, Anticosti Island, and, on the north side of Anticosti Island, the meridian of longitude 63W;

 (b) the Caspian Sea;

 (c) the Plate, Parana and Uruguay Rivers as far east as a rhumb line drawn between Punta Norte, Argentina, and Punta del Este, Uruguay.

ARTICLE 6

Exemptions

(1) Ships when engaged on international voyages between the near neighbouring ports of two or more States may be exempted by the Administration from the provisions of the present Convention, so long as they shall remain engaged on such voyages, if the Governments of the States in which such ports are situated shall be satisfied that the sheltered nature or conditions of such voyages between such ports make it unreasonable or impracticable to apply the provisions of the present Convention to ships engaged on such voyages.

(2) The Administration may exempt any ship which embodies features of a novel kind from any of the provisions of this Convention the application of which might seriously impede research into the development of such features and their incorporation in ships engaged on international voyages. Any such ship shall however, comply with safety requirements which, in the opinion of that Administration, are adequate for the service for which it is intended and are such as to ensure the overall safety of the ship and which are acceptable to the Governments of the States to be visited by the ship.

(3) The Administration which allows any exemption under paragraphs (1) and (2) of this Article shall communicate to the InterGovernmental Maritime Consultative Organization (hereinafter called the Organization) particulars of the same and reasons therefor which the Organization shall circulate to the Contracting Governments for their information.

(4) A ship which is not normally engaged on international voyages but which, in exceptional circumstances, is required to undertake a single international voyage may be exempted by the Administration from any of the requirements of the present Convention, provided that it complies with safety requirements which, in the opinion of that Administration, are adequate for the voyage which is to be undertaken by the ship.

ARTICLE 7

Force Majeure

(1) A ship which is not subject to the provisions of the present Convention at the time of its departure on any voyage shall not become subject to such provisions on account of any deviation from its intended voyage due to stress of weather or any other cause of force majeure.

(2) In applying the provisions of the present Convention, the Contracting Governments shall give due consideration to any deviation or delay caused to any ship owing to stress of weather or any other cause of force majeure.

ARTICLE 8

Equivalents

(1) The Administration may allow any fitting, material, appliance or apparatus to be fitted, or any other provision to be made in a ship, other than that required by the present Convention, if it is satisfied by trial thereof or otherwise that such fitting, material, appliance or apparatus, or provision, is at least as effective as that required by the Convention.

(2) The Administration which allows a fitting, material, appliance or apparatus, or provision, other than that required by the present Convention, shall communicate to the Organization for circulation to the Contracting Governments particulars thereof, together with a report on any trials made.

ARTICLE 9

Approvals for Experimental Purposes

(1) Nothing in the present Convention shall prevent an Administration from making specific approvals for experimental purposes in respect of a ship to which the Convention applies.

(2) An Administration which makes any such approval shall communicate to the Organization for circulation to the Contracting Governments particulars thereof.

ARTICLE 10

Repairs, Alterations and Modifications

(1) A ship which undergoes repairs, alterations, modifications and outfitting related thereto shall continue to comply with at least the requirements previously applicable to the ship. An existing ship in such a case shall not, as a rule, comply to a lesser extent with the requirements for a new ship than it did before.

(2) Repairs, alterations and modifications of a major character and outfitting related thereto should meet the requirements for a new ship in so far as the Administration deems reasonable and practicable.

ARTICLE 11

Zones and Areas

(1) A ship to which the present Convention applies shall comply with the requirements applicable to that ship in the zones and areas described in Annex II.

(2) A port standing on the boundary line between two zones or areas shall be regarded as within the zone or area from or into which the ship arrives or departs.

ARTICLE 12

Submersion

(1) Except as provided in paragraphs (2) and (3) of this Article, the appropriate load lines on the sides of the ship corresponding to the season of the year and the zone or area in which the ship may be shall not be submerged at any time when the ship puts to sea, during the voyage or on arrival.

(2) When a ship is in fresh water of unit density the appropriate load line may be submerged by the amount of the fresh water allowance shown on the International Load Line Certificate (1966). Where the density is other than unity, an allowance shall be made proportional to the difference between 1.025 and the actual density.

(3) When a ship departs from a port situated on a river or inland waters, deeper loading shall be permitted corresponding to the weight of fuel and all other materials required for consumption between the point of departure and the sea.

ARTICLE 13

Survey, Inspection and Marking

The survey, inspection and marking of ships, as regards the enforcement of the provisions of the present Convention and the granting of exemptions therefrom, shall be carried out by officers of the Administration. The Administration may, however, entrust the survey, inspection and marking either to surveyors nominated for the purpose or to organizations recognized by it. In every case the Administration concerned fully guarantees the completeness and efficiency of the survey, inspection and marking.

ARTICLE 14

Initial and Periodical Surveys and Inspections

(1) A ship shall be subjected to the surveys and inspections specified below:

 (a) A survey before the ship is put in service, which shall include a complete inspection of its structure and equipment in so far as the ship is covered by the present Convention. This survey shall be such as to ensure that the arrangements, material, and scantlings fully comply with the requirements of the present Convention.

 (b) A periodical survey at intervals specified by the Administration, but not exceeding five years, which shall be such as to ensure that the structure, equipment, arrangements, material and scantlings fully comply with the requirements of the present Convention.

 (c) A periodical inspection within three months either way of each annual anniversary date of the certificate, to ensure that alterations have not been made to the hull or superstructures which would affect the calculations determining the position of the load line and so as to ensure the maintenance in an effective condition of fittings and appliances for:

 (i) protection of openings;

 (ii) guard rails;

 (iii) freeing ports; and

 (iv) means of access to crew’s quarters.

(2) The periodical inspections referred to in paragraph (1) (c) of this Article shall be endorsed on the International Load Line Certificate (1966) or on the International Load Line Exemption Certificate issued to a ship exempted under paragraph (2) of Article 6 of the present Convention.

ARTICLE 15

Maintenance of Conditions after Survey

After any survey of the ship under Article 14 has been completed, no change shall be made in the structure, equipment, arrangements, material or scantlings covered by the survey, without the sanction of the Administration.

ARTICLE 16

Issue of Certificates

(1) An International Load Line Certificate (1966) shall be issued to every ship which has been surveyed and marked in accordance with the present Convention.

(2) An International Load Line Exemption Certificate shall be issued to any ship to which an exemption has been granted under and in accordance with paragraph (2) or (4) of Article 6.

(3) Such certificates shall be issued by the Administration or by any person or organization duly authorized by it. In every case, the Administration assumes full responsibility for the certificate.

(4) Notwithstanding any other provision of the present Convention, any international load line certificate which is current when the present Convention comes into force in respect of the Government of the State whose flag the ship is flying shall remain valid for two years or until it expires, whichever is earlier. After that time an International Load Line Certificate (1966) shall be required.

ARTICLE 17

Issue of Certificate by another Government

(1) A Contracting Government may, at the request of another Contracting Government, cause a ship to be surveyed and, if satisfied that the provisions of the present Convention are complied with, shall issue or authorize the issue of an International Load Line Certificate (1966) to the ship in accordance with the present Convention.

(2) A copy of the certificate, a copy of the survey report used for computing the freeboard, and a copy of the computations shall be transmitted as early as possible to the requesting Government.

(3) A certificate so issued must contain a statement to the effect that it has been issued at the request of the Government of the State whose flag the ship is or will be flying and it shall have the same force and receive the same recognition as a certificate issued under Article 16.

(4) No International Load Line Certificate (1966) shall be issued to a ship which is flying the flag of a State the Government of which is not a Contracting Government.

ARTICLE 18

Form of Certificates

(1) The certificates shall be drawn up in the official language or languages of the issuing country. If the language used is neither English nor French, the text shall include a translation into one of these languages.

(2) The form of the certificates shall be that of the models given in Annex III. The arrangement of the printed part of each model certificate shall be exactly reproduced in any certificates issued, and in any certified copies thereof.

ARTICLE 19

Duration of Certificates

(1) An International Load Line Certificate (1966) shall be issued for a period specified by the Administration, which shall not exceed five years from the date of issue.

(2) If, after the periodical survey referred to in paragraph (1) (b) of Article 14, a new certificate cannot be issued to the ship before the expiry of the certificate originally issued, the person or organization carrying out the survey may extend the validity of the original certificate for a period which shall not exceed five months. This extension shall be endorsed on the certificate, and shall be granted only where there have been no alterations in the structure, equipment, arrangements, material or scantlings which affect the ship’s freeboard.

(3) An International Load Line Certificate (1966) shall be cancelled by the Administration if any of the following circumstances exist:

 (a) material alterations have taken place in the hull or superstructures of the ship such as would necessitate the assignment of an increased freeboard;

 (b) the fittings and appliances mentioned in subparagraph (c) of paragraph (1) of Article 14 are not maintained in an effective condition;

 (c) the certificate is not endorsed to show that the ship has been inspected as provided in subparagraph (c) of paragraph (1) of Article 14;

 (d) the structural strength of the ship is lowered to such an extent that the ship is unsafe.

(4) (a) The duration of an International Load Line Exemption Certificate issued by an Administration to a ship exempted under paragraph (2) of Article 6 shall not exceed five years from the date of issue. Such certificate shall be subject to a renewal, endorsement and cancellation procedure similar to that provided for an International Load Line Certificate (1966) under this Article.

 (b) The duration of an International Load Line Exemption Certificate issued to a ship exempted under paragraph (4) of Article 6 shall be limited to the single voyage for which it is issued.

(5) A certificate issued to a ship by an Administration shall cease to be valid upon the transfer of such a ship to the flag of another State.

ARTICLE 20

Acceptance of Certificates

The certificates issued under the authority of a Contracting Government in accordance with the present Convention shall be accepted by the other Contracting Governments and regarded for all purposes covered by the present Convention as having the same force as certificates issued by them.

ARTICLE 21

Control

(1) Ships holding a certificate issued under Article 16 or Article 17 are subject, when in the ports of other Contracting Governments, to control by officers duly authorized by such Governments. Contracting Governments shall ensure that such control is exercised as far as is reasonable and practicable with a view to verifying that there is on board a valid certificate under the present Convention. If there is a valid International Load Line Certificate (1966) on board the ship, such control shall be limited to the purpose of determining that:

 (a) the ship is not loaded beyond the limits allowed by the certificate;

 (b) the position of the load line of the ship corresponds with the certificate; and

 (c) the ship has not been so materially altered in respect to the matters set out in subparagraphs (a) and (b) of paragraph (3) of Article 19 that the ship is manifestly unfit to proceed to sea without danger to human life.

If there is a valid International Load Line Exemption Certificate on board, such control shall be limited to the purpose of determining that any conditions stipulated in that certificate are complied with.

(2) If such control is exercised under subparagraph (c) of paragraph (1) of this Article, it shall only be exercised in so far as may be necessary to ensure that the ship shall not sail until it can proceed to sea without danger to the passengers or the crew.

(3) In the event of the control provided for in this Article giving rise to intervention of any kind, the officer carrying out the control shall immediately inform in writing the Consul or the diplomatic representative of the State whose flag the ship is flying of this decision and of all the circumstances in which intervention was deemed to be necessary.

ARTICLE 22

Privileges

The privileges of the present Convention may not be claimed in favour of any ship unless it holds a valid certificate under the Convention.

ARTICLE 23

Casualties

(1) Each Administration undertakes to conduct an investigation of any casualty occurring to ships for which it is responsible and which are subject to the provisions of the present Convention when it judges that such an investigation may assist in determining what changes in the Convention might be desirable.

(2) Each Contracting Government undertakes to supply the Organization with the pertinent information concerning the findings of such investigations. No reports or recommendations of the Organization based upon such information shall disclose the identity or nationality of the ships concerned or in any manner fix or imply responsibility upon any ship or person.

ARTICLE 24

Prior Treaties and Conventions

(1) All other treaties, conventions and arrangements relating to load line matters at present in force between Governments parties to the present Convention shall continue to have full and complete effect during the terms thereof as regards:

 (a) ships to which the present Convention does not apply; and

 (b) ships to which the present Convention applies, in respect of matters for which it has not expressly provided.

(2) To the extent, however, that such treaties, conventions or arrangements conflict with the provisions of the present Convention, the provisions of the present Convention shall prevail.

ARTICLE 25

Special Rules drawn up by Agreement

When in accordance with the present Convention special rules are drawn up by agreement among all or some of the Contracting Governments, such rules shall be communicated to the Organization for circulation to all Contracting Governments.

ARTICLE 26

Communication of Information

(1) The Contracting Governments undertake to communicate to and deposit with the Organization:

 (a) a sufficient number of specimens of their certificates issued under the provisions of the present Convention for circulation to the Contracting Governments;

 (b) the text of the laws, decrees, orders, regulations and other instruments which shall have been promulgated on the various matters within the scope of the present Convention; and

 (c) a list of nongovernmental agencies which are authorized to act in their behalf in the administration of load line matters for circulation to the Contracting Governments.

(2) Each Contracting Government agrees to make its strength standards available to any other Contracting Government, upon request.

ARTICLE 27

Signature, Acceptance and Accession

(1) The present Convention shall remain open for signature for three months from 5 April 1966 and shall thereafter remain open for accession. Governments of States Members of the United Nations, or of any of the Specialized Agencies, or of the International Atomic Energy Agency, or parties to the Statute of the International Court of Justice may become parties to the Convention by:

 (a) signature without reservation as to acceptance;

 (b) signature subject to acceptance followed by acceptance; or

 (c) accession.

(2) Acceptance or accession shall be effected by the deposit of an instrument of acceptance or accession with the Organization which shall inform all Governments that have signed the Convention or acceded to it of each new acceptance or accession and of the date of its deposit.

ARTICLE 28

Coming into Force

(1) The present Convention shall come into force twelve months after the date on which not less than fifteen Governments of States, including seven each with not less than one million gross tons of shipping, have signed without reservation as to acceptance or deposited instruments of acceptance or accession in accordance with Article 27. The Organization shall inform all Governments which have signed or acceded to the present Convention of the date on which it comes into force.

(2) For Governments which have deposited an instrument of acceptance of or accession to the present Convention during the twelve months mentioned in paragraph (1) of this Article, the acceptance or accession shall take effect on the coming into force of the present Convention or three months after the date of deposit of the instrument of acceptance or accession, whichever is the later date.

(3) For Governments which have deposited an instrument of acceptance of or accession to the present Convention after the date on which it comes into force, the Convention shall come into force three months after the date of the deposit of such instrument.

(4) After the date on which all the measures required to bring an amendment to the present Convention into force have been completed, or all necessary acceptances are deemed to have been given under subparagraph (b) of paragraph (2) of Article 29 in case of amendment by unanimous acceptance, any instrument of acceptance or accession deposited shall be deemed to apply to the Convention as amended.

ARTICLE 29

Amendments

(1) The present Convention may be amended upon the proposal of a Contracting Government by any of the procedures specified in this Article.

(2) Amendment by unanimous acceptance

 (a) Upon the request of a Contracting Government, any amendment proposed by it to the present Convention shall be communicated by the Organization to all Contracting Governments for consideration with a view to unanimous acceptance.

 (b) Any such amendment shall enter into force twelve months after the date of its acceptance by all Contracting Governments unless an earlier date is agreed upon. A Contracting Government which does not communicate its acceptance or rejection of the amendment to the Organization within three years of its first communication by the latter shall be deemed to have accepted the amendment.

 (c) Any proposed amendment shall be deemed to be rejected if it is not accepted under subparagraph (b) of the present paragraph within three years after it has been first communicated to all Contracting Governments by the Organization.

(3) Amendment after consideration in the Organization

 (a) Upon the request of a Contracting Government, any amendment proposed by it to the present Convention will be considered in the Organization. If adopted by a majority of twothirds of those present and voting in the Maritime Safety Committee of the Organization, such amendment shall be communicated to all Members of the Organization and all Contracting Governments at least six months prior to its consideration by the Assembly of the Organization.

 (b) If adopted by a twothirds majority of those present and voting in the Assembly, the amendment shall be communicated by the Organization to all Contracting Governments for their acceptance.

 (c) Such amendment shall come into force twelve months after the date on which it is accepted by twothirds of the Contracting Governments. The amendment shall come into force with respect to all Contracting Governments except those which, before it comes into force, make a declaration that they do not accept the amendment.

 (d) The Assembly, by a twothirds majority of those present and voting, including twothirds of the Governments represented on the Maritime Safety Committee and present and voting in the Assembly, may propose a determination at the time of its adoption that an amendment is of such an important nature that any Contracting Government which makes a declaration under subparagraph (c), and which does not accept the amendment within a period of twelve months after it comes into force, shall cease to be a party to the present Convention upon the expiry of that period. This determination shall be subject to the prior acceptance of twothirds of the Contracting Governments to the present Convention.

 (e) Nothing in this paragraph shall prevent the Contracting Government which first proposed action under this paragraph on an amendment to the present Convention from taking at any time such alternative action as it deems desirable in accordance with paragraph (2) or (4) of this Article.

(4) Amendment by a conference

 (a) Upon the request of a Contracting Government, concurred in by at least onethird of the Contracting Governments, a conference of Governments will be convened by the Organization to consider amendments to the present Convention.

 (b) Every amendment adopted by such a conference by a twothirds majority of those present and voting of the Contracting Governments shall be communicated by the Organization to all Contracting Governments for their acceptance.

 (c) Such amendment shall come into force twelve months after the date on which it is accepted by twothirds of the Contracting Governments. The amendment shall come into force with respect to all Contracting Governments except those which, before it comes into force, make a declaration that they do not accept the amendment.

 (d) By a twothirds majority of those present and voting, a conference convened under subparagraph (a) may determine at the time of its adoption that an amendment is of such an important nature that any Contracting Government which makes a declaration under subparagraph (c), and which does not accept the amendment within a period of twelve months after it comes into force, shall cease to be a party to the present Convention upon the expiry of that period.

(5) Any amendments to the present Convention made under this Article which relate to the structure of a ship shall apply only to ships the keels of which are laid, or which are at a similar stage of construction, on or after the date on which the amendment comes into force.

(6) The Organization shall inform all Contracting Governments of any amendments which come into force under this Article, together with the date on which each such amendment will come into force.

(7) Any acceptance or declaration under this Article shall be made by a notification in writing to the Organization which shall notify all Contracting Governments of the receipt of the acceptance or declaration.

ARTICLE 30

Denunciation

(1) The present Convention may be denounced by any Contracting Government at any time after the expiry of five years from the date on which the Convention comes into force for that Government.

(2) Denunciation shall be effected by a notification in writing addressed to the Organization which shall inform all the other Contracting Governments of any such notification received and of the date of its receipt.

(3) A denunciation shall take effect one year, or such longer period as may be specified in the notification, after its receipt by the Organization.

ARTICLE 31

Suspension

(1) In case of hostilities or other extraordinary circumstances which affect the vital interests of a State the Government of which is a Contracting Government, that Government may suspend the operation of the whole or any part of the present Convention. The suspending Government shall immediately give notice of any such suspension to the Organization.

(2) Such suspension shall not deprive other Contracting Governments of any right of control under the present Convention over the ships of the suspending Government when such ships are within their ports.

(3) The suspending Government may at any time terminate such suspension and shall immediately give notice of such termination to the Organization.

(4) The Organization shall notify all Contracting Governments of any suspension or termination of suspension under this Article.

ARTICLE 32

Territories

(1) (a) The United Nations, in cases where they are the administering authority for a territory, or any Contracting Government responsible for the international relations of a territory, shall as soon as possible consult with such territory in an endeavour to extend the present Convention to that territory and may at any time by notification in writing to the Organization declare that the present Convention shall extend to such territory.

 (b) The present Convention shall, from the date of the receipt of the notification or from such other date as may be specified in the notification, extend to the territory named therein.

(2) (a) The United Nations, or any Contracting Government which has made a declaration under subparagraph (a) of paragraph (1) of this Article, at any time after the expiry of a period of five years from the date on which the Convention has been so extended to any territory, may by notification in writing to the Organization declare that the present Convention shall cease to extend to any such territory named in the notification.

 (b) The present Convention shall cease to extend to any territory mentioned in such notification one year, or such longer period as may be specified therein, after the date of receipt of the notification by the Organization.

(3) The Organization shall inform all the Contracting Governments of the extension of the present Convention to any territories under paragraph (1) of this Article, and of the termination of any such extension under the provisions of paragraph (2), stating in each case the date from which the present Convention has been or will cease to be so extended.

ARTICLE 33

Registration

(1) The present Convention shall be deposited with the Organization and the SecretaryGeneral of the Organization shall transmit certified true copies thereof to all Signatory Governments and to all Governments which accede to the present Convention.

(2) As soon as the present Convention comes into force it shall be registered by the Organization in accordance with Article 102 of the Charter of the United Nations.

ARTICLE 34

Languages

The present Convention is established in a single copy in the English and French languages, both texts being equally authentic. Official translations in the Russian and Spanish languages shall be prepared and deposited with the signed original.


ANNEX I

 

REGULATIONS FOR DETERMINING LOAD LINES

CHAPTER I.—GENERAL

The Regulations assume that the nature and stowage of the cargo, ballast, etc., are such as to secure sufficient stability of the ship and the avoidance of excessive structural stress.

The Regulations also assume that where there are international requirements relating to stability or subdivision, these requirements have been complied with.

Regulation 1

Strength of Hull

The Administration shall satisfy itself that the general structural strength of the hull is sufficient for the draught corresponding to the freeboard assigned. Ships built and maintained in conformity with the requirements of a classification society recognized by the Administration may be considered to possess adequate strength.

Regulation 2

Application

(1) Ships with mechanical means of propulsion or lighters, barges or other ships without independent means of propulsion, shall be assigned freeboards in accordance with the provisions of Regulations 140 inclusive of this Annex.

(2) Ships carrying timber deck cargoes may be assigned, in addition to the freeboards prescribed in paragraph (1) of this Regulation, timber freeboards in accordance with the provisions of Regulations 4145 inclusive of this Annex.

(3) Ships designed to carry sail, whether as the sole means of propulsion or as a supplementary means, and tugs, shall be assigned freeboards in accordance with the provisions of Regulations 140 inclusive of this Annex. Such additional freeboard shall be required as determined by the Administration.

(4) Ships of wood or of composite construction, or of other materials the use of which the Administration has approved, or ships whose constructional features are such as to render the application of the provisions of this Annex unreasonable or impracticable, shall be assigned freeboards as determined by the Administration.

(5) Regulations 10 to 26 inclusive of this Annex shall apply to every ship to which a minimum freeboard is assigned. Relaxations from these requirements may be granted to a ship to which a greater than minimum freeboard is assigned on condition that the Administration is satisfied with the safety conditions provided.

Regulation 3

Definitions of Terms used in the Annexes

(1) Length. The length (L) shall be taken as 96 per cent of the total length on a waterline at 85 per cent of the least moulded depth measured from the top of the keel, or as the length from the fore side of the stem to the axis of the rudder stock on that waterline, if that be greater. In ships designed with a rake of keel the waterline on which this length is measured shall be parallel to the designed waterline.

(2) Perpendiculars. The forward and after perpendiculars shall be taken at the forward and after ends of the length (L). The forward perpendicular shall coincide with the fore side of the stem on the waterline on which the length is measured.

(3) Amidships. Amidships is at the middle of the length (L).

(4) Breadth. Unless expressly provided otherwise, the breadth (B) is the maximum breadth of the ship, measured amidships to the moulded line of the frame in a ship with a metal shell and to the outer surface of the hull in a ship with a shell of any other material.

(5) Moulded Depth

 (a) The moulded depth is the vertical distance measured from the top of the keel to the top of the freeboard deck beam at side. In wood and composite ships the distance is measured from the lower edge of the keel rabbet. Where the form at the lower part of the midship section is of a hollow character, or where thick garboards are fitted, the distance is measured from the point where the line of the flat of the bottom continued inwards cuts the side of the keel.

 (b) In ships having rounded gunwales, the moulded depth shall be measured to the point of intersection of the moulded lines of the deck and side shell plating, the lines extending as though the gunwale were of angular design.

 (c) Where the freeboard deck is stepped and the raised part of the deck extends over the point at which the moulded depth is to be determined, the moulded depth shall be measured to a line of reference extending from the lower part of the deck along a line parallel with the raised part.

(6) Depth for Freeboard (D)

 (a) The depth for freeboard (D) is the moulded depth amidships, plus the thickness of the freeboard deck stringer plate, where fitted, plus if the exposed freeboard deck is sheathed, where

T is the mean thickness of the exposed sheathing clear of deck openings, and

S is the total length of superstructures as defined in subparagraph (10) (d) of this Regulation.

 (b) The depth for freeboard (D) in a ship having a rounded gunwale with a radius greater than 4 per cent of the breadth (B) or having topsides of unusual form is the depth for freeboard of a ship having a midship section with vertical topsides and with the same round of beam and area of topside section equal to that provided by the actual midship section.

(7) Block Coefficient. The block coefficient (Cb) is given by

where

  is the volume of the moulded displacement of the ship, excluding bossing, in a ship with a metal shell, and is the volume of displacement to the outer surface of the hull in a ship with a shell of any other material, both taken at a moulded draught of d1; and where

 d1 is 85 per cent of the least moulded depth.

(8) Freeboard. The freeboard assigned is the distance measured vertically downwards amidships from the upper edge of the deck line to the upper edge of the related load line.

(9) Freeboard Deck. The freeboard deck is normally the uppermost complete deck exposed to weather and sea, which has permanent means of closing all openings in the weather part thereof, and below which all openings in the sides of the ship are fitted with permanent means of watertight closing. In a ship having a discontinuous freeboard deck, the lowest line of the exposed deck and the continuation of that line parallel to the upper part of the deck is taken as the freeboard deck. At the option of the owner and subject to the approval of the Administration, a lower deck may be designated as the freeboard deck, provided it is a complete and permanent deck continuous in a fore and aft direction at least between the machinery space and peak bulkheads and continuous athwartships. When this lower deck is stepped the lowest line of the deck and the continuation of that line parallel to the upper part of the deck is taken as the freeboard deck. When a lower deck is designated as the freeboard deck, that part of the hull which extends above the freeboard deck is treated as a superstructure so far as concerns the application of the conditions of assignment and the calculation of freeboard. It is from this deck that the freeboard is calculated.

(10) Superstructure

 (a) A superstructure is a decked structure on the freeboard deck, extending from side to side of the ship or with the side plating not being inboard of the shell plating more than 4 per cent of the breadth (B). A raised quarter deck is regarded as a superstructure.

 (b) An enclosed superstructure is a superstructure with:

 (i) enclosing bulkheads of efficient construction;

 (ii) access openings, if any, in these bulkheads fitted with doors complying with the requirements of Regulation 12;

 (iii) all other openings in sides or ends of the superstructure fitted with efficient weathertight means of closing.

  A bridge or poop shall not be regarded as enclosed unless access is provided for the crew to reach machinery and other working spaces inside these superstructures by alternative means which are available at all times when bulkhead openings are closed.

 (c) The height of a superstructure is the least vertical height measured at side from the top of the superstructure deck beams to the top of the freeboard deck beams.

 (d) The length of a superstructure (S) is the mean length of the part of the superstructure which lies within the length (L).

(11) Flush Deck Ship. A flush deck ship is one which has no superstructure on the freeboard deck.

(12) Weathertight. Weathertight means that in any sea conditions water will not penetrate into the ship.

Regulation 4

Deck Line

The deck line is a horizontal line 300 millimetres (12 inches) in length and 25 millimetres (1 inch) in breadth. It shall be marked amidships on each side of the ship, and its upper edge shall normally pass through the point where the continuation outwards of the upper surface of the freeboard deck intersects the outer surface of the shell (as illustrated in Figure 1), provided that the deck line may be placed with reference to another fixed point on the ship on condition that the freeboard is correspondingly corrected. The location of the reference point and the identification of the freeboard deck shall in all cases be indicated on the International Load Line Certificate (1966).

Regulation 5

Load Line Mark

The Load Line Mark shall consist of a ring 300 millimetres (12 inches) in outside diameter and 25 millimetres (1 inch) wide which is intersected by a horizontal line 450 millimetres (18 inches) in length and 25 millimetres (1 inch) in breadth, the upper edge of which passes through the centre of the ring. The centre of the ring shall be placed amidships and at a distance equal to the assigned summer freeboard measured vertically below the upper edge of the deck line (as illustrated in Figure 2).

Regulation 6

Lines to be used with the Load Line Mark

(1) The lines which indicate the load line assigned in accordance with these Regulations shall be horizontal lines 230 millimetres (9 inches) in length and 25 millimetres (1 inch) in breadth which extend forward of, unless expressly provided otherwise, and at right angles to, a vertical line 25 millimetres (1 inch) in breadth marked at a distance 540 millimetres (21 inches) forward of the centre of the ring (as illustrated in Figure 2).

(2) The following load lines shall be used:

 (a) The Summer Load Line indicated by the upper edge of the line which passes through the centre of the ring and also by a line marked S.

 (b) The Winter Load Line indicated by the upper edge of a line marked W.

 (c) The Winter North Atlantic Load Line indicated by the upper edge of a line marked WNA.

 (d) The Tropical Load Line indicated by the upper edge of a line marked T.

 (e) The Fresh Water Load Line in summer indicated by the upper edge of a line marked F. The Fresh Water Load Line in summer is marked abaft the vertical line. The difference between the Fresh Water Load Line in summer and the Summer Load Line is the allowance to be made for loading in fresh water at the other load lines.

 (f) The Tropical Fresh Water Load Line indicated by the upper edge of a line marked TF, and marked abaft the vertical line.

(3) If timber freeboards are assigned in accordance with these Regulations, the timber load lines shall be marked in addition to ordinary load lines. These lines shall be horizontal lines 230 millimetres (9 inches) in length and 25 millimetres (1 inch) in breadth which extend abaft unless expressly provided otherwise, and are at right angles to, a vertical line 25 millimetres (1 inch) in breadth marked at a distance 540 millimetres (21 inches) abaft the centre of the ring (as illustrated in Figure 3).

(4) The following timber load lines shall be used:

 (a) The Summer Timber Load Line indicated by the upper edge of a line marked LS.

 (b) The Winter Timber Load Line indicated by the upper edge of a line marked LW.

 (c) The Winter North Atlantic Timber Load Line indicated by the upper edge of a line marked LWNA.

 

 (d) The Tropical Timber Load Line indicated by the upper edge of a line marked LT.

 (e) The Fresh Water Timber Load Line in summer indicated by the upper edge of a line marked LF and marked forward of the vertical line.

The difference between the Fresh Water Timber Load Line in summer and the Summer Timber Load Line is the allowance to be made for loading in fresh water at the other timber load lines.

 (f) The Tropical Fresh Water Timber Load Line indicated by the upper edge of a line marked LTF and marked forward of the vertical line.

(5) Where the characteristics of a ship or the nature of the ship’s service or navigational limits make any of the seasonal lines inapplicable, these lines may be omitted.

(6) Where a ship is assigned a greater than minimum freeboard so that the load line is marked at a position corresponding to, or lower than, the lowest seasonal load line assigned at minimum freeboard in accordance with the present Convention, only the Fresh Water Load Line need be marked.

(7) On sailing ships only the Fresh Water Load Line and the Winter North Atlantic Load Line need be marked (as illustrated in Figure 4).

(8) Where a Winter North Atlantic Load Line is identical with the Winter Load Line corresponding to the same vertical line, this load line shall be marked W.

(9) Additional load lines required by other international conventions in force may be marked at right angles to and abaft the vertical line specified in paragraph (1) of this Regulation.

Regulation 7

Mark of Assigning Authority

The mark of the Authority by whom the load lines are assigned may be indicated alongside the load line ring above the horizontal line which passes through the centre of the ring, or above and below it. This mark shall consist of not more than four initials to identify the Authority’s name, each measuring approximately 115 millimetres (4½ inches) in height and 75 millimetres (3 inches) in width.

Regulation 8

Details of Marking

The ring, lines and letters shall be painted in white or yellow on a dark ground or in black on a light ground. They shall also be permanently marked on the sides of the ships to the satisfaction of the Administration. The marks shall be plainly visible and, if necessary, special arrangements shall be made for this purpose.

Regulation 9

Verification of Marks

The International Load Line Certificate (1966) shall not be delivered to the ship until the officer or surveyor acting under the provisions of Article 13 of the present Convention has certified that the marks are correctly and permanently indicated on the ship’s sides.


CHAPTER II.—CONDITIONS OF ASSIGNMENT OF FREEBOARD

Regulation 10

Information to be supplied to the Master

(1) The master of every new ship shall be supplied with sufficient information, in an approved form, to enable him to arrange for the loading and ballasting of his ship in such a way as to avoid the creation of any unacceptable stresses in the ship’s structure, provided that this requirement need not apply to any particular length, design or class of ship where the Administration considers it to be unnecessary.

(2) The master of every new ship which is not already provided with stability information under an international convention for the safety of life at sea in force shall be supplied with sufficient information in an approved form to give him guidance as to the stability of the ship under varying conditions of service, and a copy shall be furnished to the Administration.

Regulation 11

Superstructure End Bulkheads

Bulkheads at exposed ends of enclosed superstructures shall be of efficient construction and shall be to the satisfaction of the Administration.

Regulation 12

Doors

(1) All access openings in bulkheads at ends of enclosed superstructures shall be fitted with doors of steel or other equivalent material, permanently and strongly attached to the bulkhead, and framed, stiffened and fitted so that the whole structure is of equivalent strength to the unpierced bulkhead and weathertight when closed. The means for securing these doors weathertight shall consist of gaskets and clamping devices or other equivalent means and shall be permanently attached to the bulkhead or to the doors themselves, and the doors shall be so arranged that they can be operated from both sides of the bulkhead.

(2) Except as otherwise provided in these Regulations, the height of the sills of access openings in bulkheads at ends of enclosed superstructures shall be at least 380 millimetres (15 inches) above the deck.

Regulation 13

Position of Hatchways, Doorways and Ventilators

For the purpose of the Regulations, two positions of hatchways, doorways and ventilators are defined as follows:

Position 1—Upon exposed freeboard and raised quarter decks, and upon exposed superstructure decks situated forward of a point located a quarter of the ship’s length from the forward perpendicular.

Position 2—Upon exposed superstructure decks situated abaft a quarter of the ship’s length from the forward perpendicular.

Regulation 14

Cargo and other Hatchways

(1) The construction and the means for securing the weathertightness of cargo and other hatchways in positions 1 and 2 shall be at least equivalent to the requirements of Regulations 15 and 16 of this Annex.

(2) Coamings and hatchway covers to exposed hatchways on decks above the superstructure deck shall comply with the requirements of the Administration.

Regulation 15

Hatchways closed by Portable Covers and secured Weathertight by Tarpaulins and Battening Devices

Hatchway Coamings

(1) The coamings of hatchways closed by portable covers secured weathertight by tarpaulins and battening devices shall be of substantial construction, and their height above the deck shall be at least as follows:

600 millimetres (23½ inches) if in position 1.

450 millimetres (17½ inches) if in position 2.

Hatchway Covers

(2) The width of each bearing surface for hatchway covers shall be at least 65 millimetres (2½ inches).

(3) Where covers are made of wood, the finished thickness shall be at least 60 millimetres (23/8 inches) in association with a span of not more than 1.5 metres (4.9 feet).

(4) Where covers are made of mild steel the strength shall be calculated with assumed loads not less than 1.75 metric tons per square metre (358 pounds per square foot) on hatchways in position 1, and not less than 1.30 metric tons per square metre (266 pounds per square foot) on hatchways in position 2, and the product of the maximum stress thus calculated and the factor 4.25 shall not exceed the minimum ultimate strength of the material. They shall be so designed as to limit the deflection to not more than 0.0028 times the span under these loads.

(5) The assumed loads on hatchways in position 1 may be reduced to 1 metric ton per square metre (205 pounds per square foot) for ships of 24 metres (79 feet) in length and shall be not less than 1.75 metric tons per square metre (358 pounds per square foot) for ships of 100 metres (328 feet) in length. The corresponding loads on hatchways in position 2 may be reduced to 0.75 metric tons per square metre (154 pounds per square foot) and 1.30 metric tons per square metre (266 pounds per square foot) respectively. In all cases values at intermediate lengths shall be obtained by interpolation.

Portable Beams

(6) Where portable beams for supporting hatchway covers are made of mild steel the strength shall be calculated with assumed loads not less than 1.75 metric tons per square metre (358 pounds per square foot) on hatchways in position 1 and not less than 1.30 metric tons per square metre (266 pounds per square foot) on hatchways in position 2 and the product of the maximum stress thus calculated and the factor 5 shall not exceed the minimum ultimate strength of the material. They shall be so designed as to limit the deflection to not more than 0.0022 times the span under these loads. For ships of not more than 100 metres (328 feet) in length the requirements of paragraph (5) of this Regulation are applicable.

Pontoon Covers

(7) Where pontoon covers used in place of portable beams and covers are made of mild steel the strength shall be calculated with the assumed loads given in paragraph (4) of this Regulation, and the product of the maximum stress thus calculated and the factor 5 shall not exceed the minimum ultimate strength of the material. They shall be so designed as to limit the deflection to not more than 0.0022 times the span. Mild steel plating forming the tops of covers shall be not less in thickness than one per cent of the spacing of stiffeners or 6 millimetres (0.24 inches) if that be greater. For ships of not more than 100 metres (328 feet) in length the requirements of paragraph (5) of this Regulation are applicable.

(8) The strength and stiffness of covers made of materials other than mild steel shall be equivalent to those of mild steel to the satisfaction of the Administration.

Carriers or Sockets

(9) Carriers or sockets for portable beams shall be of substantial construction, and shall provide means for the efficient fitting and securing of the beams. Where rolling types of beams are used, the arrangements shall ensure that the beams remain properly in position when the hatchway is closed.

Cleats

(10) Cleats shall be set to fit the taper of the wedges. They shall be at least 65 millimetres (2½ inches) wide and spaced not more than 600 millimetres (23½ inches) centre to centre; the cleats along each side or end shall be not more than 150 millimetres (6 inches) from the hatch corners.

Battens and Wedges

(11) Battens and wedges shall be efficient and in good condition. Wedges shall be of tough wood or other equivalent material. They shall have a taper of not more than 1 in 6 and shall be not less than 13 millimetres (½ inch) thick at the toes.

Tarpaulins

(12) At least two layers of tarpaulin in good condition shall be provided for each hatchway in position 1 or 2. The tarpaulins shall be waterproof and of ample strength. They shall be of a material of at least an approved standard weight and quality.

Security of Hatchway Covers

(13) For all hatchways in position 1 or 2 steel bars or other equivalent means shall be provided in order efficiently and independently to secure each section of hatchway covers after the tarpaulins are battened down. Hatchway covers of more than 1.5 metres (4.9 feet) in length shall be secured by at least two such securing appliances.

Regulation 16

Hatchways closed by Weathertight Covers of Steel or Other Equivalent Material fitted with Gaskets and Clamping Devices

Hatchway Coamings

(1) At positions 1 and 2 the height above the deck of hatchway coamings fitted with weathertight hatch covers of steel or other equivalent material fitted with gaskets and clamping devices shall be as specified in Regulation 15 (1). The height of these coamings may be reduced, or the coamings omitted entirely, on condition that the Administration is satisfied that the safety of the ship is not thereby impaired in any sea conditions. Where coamings are provided they shall be of substantial construction.

Weathertight Covers

(2) Where weathertight covers are of mild steel the strength shall be calculated with assumed loads not less than 1.75 metric tons per square metre (358 pounds per square foot) on hatchways in position 1, and not less than 1.30 metric tons per square metre (266 pounds per square foot) on hatchways in position 2, and the product of the maximum stress thus calculated and the factor of 4.25 shall not exceed the minimum ultimate strength of the material. They shall be so designed as to limit the deflection to not more than 0.0028 times the span under these loads. Mild steel plating forming the tops of covers shall be not less in thickness than one per cent of the spacing of stiffeners or 6 millimetres (0.24 inches) if that be greater. The provisions of Regulation 15 (5) are applicable for ships of not more than 100 metres (328 feet) in length.

(3) The strength and stiffness of covers made of materials other than mild steel shall be equivalent to those of mild steel to the satisfaction of the Administration.

Means for Securing Weathertightness

(4) The means for securing and maintaining weathertightness shall be to the satisfaction of the Administration. The arrangements shall ensure that the tightness can be maintained in any sea conditions, and for this purpose tests for tightness shall be required at the initial survey, and may be required at periodical surveys and at annual inspections or at more frequent intervals.

Regulation 17

Machinery Space Openings

(1) Machinery space openings in position 1 or 2 shall be properly framed and efficiently enclosed by steel casings of ample strength, and where the casings are not protected by other structures their strength shall be specially considered. Access openings in such casings shall be fitted with doors complying with the requirements of Regulation 12 (1), the sills of which shall be at least 600 millimetres (23½ inches) above the deck if in position 1, and at least 380 millimetres (15 inches) above the deck if in position 2. Other openings in such casings shall be fitted with equivalent covers, permanently attached in their proper positions.

(2) Coamings of any fiddley, funnel or machinery space ventilator in an exposed position on the freeboard or superstructure deck shall be as high above the deck as is reasonable and practicable. Fiddley openings shall be fitted with strong covers of steel or other equivalent material permanently attached in their proper positions and capable of being secured weathertight.

Regulation 18

Miscellaneous Openings in Freeboard and Superstructure Decks

(1) Manholes and flush scuttles in position 1 or 2 or within superstructures other than enclosed superstructures shall be closed by substantial covers capable of being made watertight. Unless secured by closely spaced bolts, the covers shall be permanently attached.

(2) Openings in freeboard decks other than hatchways, machinery space openings, manholes and flush scuttles shall be protected by an enclosed superstructure, or by a deckhouse or companionway of equivalent strength and weathertightness. Any such opening in an exposed superstructure deck or in the top of a deckhouse on the freeboard deck which gives access to a space below the freeboard deck or a space within an enclosed superstructure shall be protected by an efficient deckhouse or companionway. Doorways in such deckhouses or companionways shall be fitted with doors complying with the requirements of Regulation 12 (1).

(3) In position 1 the height above the deck of sills to the doorways in companionways shall be at least 600 millimetres (23½ inches). In position 2 it shall be at least 380 millimetres (15 inches).

Regulation 19

Ventilators

(1) Ventilators in position 1 or 2 to spaces below freeboard decks or decks of enclosed superstructures shall have coamings of steel or other equivalent material, substantially constructed and efficiently connected to the deck. Where the coaming of any ventilator exceeds 900 millimetres (35½ inches) in height it shall be specially supported.

(2) Ventilators passing through superstructures other than enclosed superstructures shall have substantially constructed coamings of steel or other equivalent material at the freeboard deck.

(3) Ventilators in position 1 the coamings of which extend to more than 4.5 metres (14.8 feet) above the deck, and in position 2 the coamings of which extend to more than 2.3 metres (7.5 feet) above the deck, need not be fitted with closing arrangements unless specifically required by the Administration.

(4) Except as provided in paragraph (3) of this Regulation, ventilator openings shall be provided with efficient weathertight closing appliances. In ships of not more than 100 metres (328 feet) in length the closing appliances shall be permanently attached; where not so provided in other ships, they shall be conveniently stowed near the ventilators to which they are to be fitted. Ventilators in position 1 shall have coamings of a height of at least 900 millimetres (35½ inches) above the deck; in position 2 the coamings shall be of a height at least 760 millimetres (30 inches) above the deck.

(5) In exposed positions, the height of coamings may be required to be increased to the satisfaction of the Administration.

Regulation 20

Air Pipes

Where air pipes to ballast and other tanks extend above the freeboard or superstructure decks, the exposed parts of the pipes shall be of substantial construction; the height from the deck to the point where water may have access below shall be at least 760 millimetres (30 inches) on the freeboard deck and 450 millimetres (17½ inches) on the superstructure deck. Where these heights may interfere with the working of the ship, a lower height may be approved, provided the Administration is satisfied that the closing arrangements and other circumstances justify a lower height. Satisfactory means permanently attached, shall be provided for closing the openings of the air pipes.

Regulation 21

Cargo Ports and other similar Openings

(1) Cargo ports and other similar openings in the sides of ships below the freeboard deck shall be fitted with doors so designed as to ensure watertightness and structural integrity commensurate with the surrounding shell plating. The number of such openings shall be the minimum compatible with the design and proper working of the ship.

(2) Unless permitted by the Administration, the lower edge of such openings shall not be below a line drawn parallel to the freeboard deck at side, which has at its lowest point the upper edge of the uppermost load line.

Regulation 22

Scuppers, Inlets and Discharges

(1) Discharges led through the shell either from spaces below the freeboard deck or from within superstructures and deckhouses on the freeboard deck fitted with doors complying with the requirements of Regulation 12 shall be fitted with efficient and accessible means for preventing water from passing inboard. Normally each separate discharge shall have one automatic nonreturn valve with a positive means of closing it from a position above the freeboard deck. Where, however, the vertical distance from the summer load waterline to the inboard end of the discharge pipe exceeds 0.01 L, the discharge may have two automatic nonreturn valves without positive means of closing, provided that the inboard valve is always accessible for examination under service conditions; where that vertical distance exceeds 0.02 L a single automatic nonreturn valve without positive means of closing may be accepted subject to the approval of the Administration. The means for operating the positive action valve shall be readily accessible and provided with an indicator showing whether the valve is open or closed.

(2) In manned machinery spaces main and auxiliary sea inlets and discharges in connexion with the operation of machinery may be controlled locally. The controls shall be readily accessible and shall be provided with indicators showing whether the valves are open or closed.

(3) Scuppers and discharge pipes originating at any level and penetrating the shell either more than 450 millimetres (17½ inches) below the freeboard deck or less than 600 millimetres (23½ inches) above the summer load waterline shall be provided with a nonreturn valve at the shell. This valve, unless required by paragraph (1), may be omitted if the piping is of substantial thickness.

(4) Scuppers leading from superstructures or deckhouses not fitted with doors complying with the requirements of Regulation 12 shall be led overboard.

(5) All valves and shell fittings required by this Regulation shall be of steel, bronze or other approved ductile material. Valves of ordinary cast iron or similar material are not acceptable. All pipes to which this Regulation refers shall be of steel or other equivalent material to the satisfaction of the Administration.

Regulation 23

Side Scuttles

(1) Side scuttles to spaces below the freeboard deck or to spaces within enclosed superstructures shall be fitted with efficient hinged inside deadlights arranged so that they can be effectively closed and secured watertight.

(2) No side scuttle shall be fitted in a position so that its sill is below a line drawn parallel to the freeboard deck at side and having its lowest point 2.5 per cent of the breadth (B) above the load waterline, or 500 millimetres (19½ inches), whichever is the greater distance.

(3) The side scuttles, together with their glasses, if fitted, and deadlights, shall be of substantial and approved construction.

Regulation 24

Freeing Ports

(1) Where bulwarks on the weather portions of freeboard or superstructure decks form wells, ample provision shall be made for rapidly freeing the decks of water and for draining them. Except as provided in paragraphs (2) and (3) of this Regulation, the minimum freeing port area (A) on each side of the ship for each well on the freeboard deck shall be that given by the following formulae in cases where the sheer in way of the well is standard or greater than standard. The minimum area for each well on superstructure decks shall be onehalf of the area given by the formulae.              

 Where the length of bulwark (l) in the well is 20 metres or less

A = 0.7 + 0.035l  square metres,

 where l exceeds 20 metres

A = 0.07l  square metres.

 l need in no case be taken as greater than 0.7 L.  

If the bulwark is more than 1.2 metres in average height the required area shall be increased by 0.004 square metres per metre of length of well for each 0.1 metre difference in height. If the bulwark is less than 0.9 metre in average height, the required area may be decreased by 0.004 square metres per metre of length of well for each 0.1 metre difference in height.

 Or,

 where the length of bulwark (l) in the well is 66 feet or less

A = 7.6 + 0.115l square feet,

 where l exceeds 66 feet

A = 0.23l square feet.

 l need in no case be taken as greater than 0.7 L.

If the bulwark is more than 3.9 feet in average height the required area shall be increased by 0.04 square feet per foot of length of well for each foot difference in height. If the bulwark is less than 3 feet in average height, the required area may be decreased by 0.04 square feet per foot of length for each foot difference in height.

(2) In ships with no sheer the calculated area shall be increased by 50 per cent. Where the sheer is less than the standard the percentage shall be obtained by interpolation.

(3) Where a ship is fitted with a trunk which does not comply with the requirements of Regulation 36 (1) (e) or where continuous or substantially continuous hatchway side coamings are fitted between detached superstructures the minimum area of the freeing port openings shall be calculated from the following Table:

Breadth of hatchway or trunk in relation to the breadth of ship

Area of freeing ports in relation to the total area of the bulwarks

40% or less

20%

75% or more

10%

The area of freeing ports at intermediate breadths shall be obtained by linear interpolation.

(4) In ships having superstructures which are open at either or both ends, adequate provision for freeing the space within such superstructures shall be provided to the satisfaction of the Administration.

(5) The lower edges of the freeing ports shall be as near the deck as practicable. Twothirds of the freeing port area required shall be provided in the half of the well nearest the lowest point of the sheer curve.

(6) All such openings in the bulwarks shall be protected by rails or bars spaced approximately 230 millimetres (9 inches) apart. If shutters are fitted to freeing ports, ample clearance shall be provided to prevent jamming. Hinges shall have pins or bearings of noncorrodible material. If shutters are fitted with securing appliances, these appliances shall be of approved construction.

Regulation 25

Protection of the Crew

(1) The strength of the deckhouses used for the accommodation of the crew shall be to the satisfaction of the Administration.

(2) Efficient guard rails or bulwarks shall be fitted on all exposed parts of the freeboard and superstructure decks. The height of the bulwarks or guard rails shall be at least 1 metre (39½ inches) from the deck, provided that where this height would interfere with the normal operation of the ship, a lesser height may be approved if the Administration is satisfied that adequate protection is provided.

(3) The opening below the lowest course of the guard rails shall not exceed 230 millimetres (9 inches). The other courses shall be not more than 380 millimetres (15 inches) apart. In the case of ships with rounded gunwales the guard rail supports shall be placed on the flat of the deck.

(4) Satisfactory means (in the form of guard rails, life lines, gangways or underdeck passages etc.) shall be provided for the protection of the crew in getting to and from their quarters, the machinery space and all other parts used in the necessary work of the ship.

(5) Deck cargo carried on any ship shall be so stowed that any opening which is in way of the cargo and which gives access to and from the crew’s quarters, the machinery space and all other parts used in the necessary work of the ship, can be properly closed and secured against the admission of water. Effective protection for the crew in the form of guard rails or life lines shall be provided above the deck cargo if there is no convenient passage on or below the deck of the ship.

Regulation 26

Special Conditions of Assignment for Type ‘A’ Ship

Machinery Casings

(1) Machinery casings on Type ‘A’ ships as defined in Regulation 27 shall be protected by an enclosed poop or bridge of at least standard height, or by a deckhouse of equal height and equivalent strength, provided that machinery casings may be exposed if there are no openings giving direct access from the freeboard deck to the machinery space. A door complying with the requirements of Regulation 12 may, however, be permitted in the machinery casing, provided that it leads to a space or passageway which is as strongly constructed as the casing and is separated from the stairway to the engine room by a second weathertight door of steel or other equivalent material.

Gangway and Access

(2) An efficiently constructed fore and aft permanent gangway of sufficient strength shall be fitted on Type ‘A’ ships at the level of the superstructure deck between the poop and the midship bridge or deckhouse where fitted, or equivalent means of access shall be provided to carry out the purpose of the gangway, such as passages below deck. Elsewhere, and on Type ‘A’ ships without a midship bridge, arrangements to the satisfaction of the Administration shall be provided to safeguard the crew in reaching all parts used in the necessary work of the ship.

(3) Safe and satisfactory access from the gangway level shall be available between separate crew accommodations and also between crew accommodations and the machinery space.

Hatchways

(4) Exposed hatchways on the freeboard and forecastle decks or on the tops of expansion trunks on Type ‘A’ ships shall be provided with efficient watertight covers of steel or other equivalent material.

Freeing Arrangements

(5) Type ‘A’ ships with bulwarks shall have open rails fitted for at least half the length of the exposed parts of the weather deck or other effective freeing arrangements. The upper edge of the sheer strake shall be kept as low as practicable.

(6) Where superstructures are connected by trunks, open rails shall be fitted for the whole length of the exposed parts of the freeboard deck.


CHAPTER III.—FREEBOARDS

Regulation 27

Types of Ships

(1) For the purposes of freeboard computation ships shall be divided into Type ‘A’ and Type ‘B’.

Type ‘A’ ships

(2) A Type ‘A’ ship is one which is designed to carry only liquid cargoes in bulk, and in which cargo tanks have only small access openings closed by watertight gasketed covers of steel or equivalent material. Such a ship necessarily has the following inherent features:

 (a) high integrity of the exposed deck; and

 (b) high degree of safety against flooding, resulting from the low permeability of loaded cargo spaces and the degree of subdivision usually provided.

(3) A Type ‘A’ ship, if over 150 metres (492 feet) in length, and designed to have empty compartments when loaded to its summer load waterline, shall be able to withstand the flooding of any one of these empty compartments at an assumed permeability of 0.95, and remain afloat in a condition of equilibrium considered to be satisfactory by the Administration. In such a ship, if over 225 metres (738 feet) in length, the machinery space shall be treated as a floodable compartment but with a permeability of 0.85.

For the guidance of Administrations the following limits may be regarded as satisfactory:

 (a) the final waterline after flooding is below the lower edge of any opening through which progressive flooding may take place;

 (b) the maximum angle of heel due to unsymmetrical flooding is of the order of 15 degrees;

 (c) the metacentric height in the flooded condition is positive.

(4) A Type ‘A’ ship shall be assigned a freeboard not less than that based on Table A of Regulation 28.

Type ‘B’ ships

(5) All ships which do not come within the provisions regarding Type ‘A’ ships in paragraphs (2) and (3) of this Regulation shall be considered as Type ‘B’ ships.

(6) Type ‘B’ ships, which in position 1 have hatchways fitted with hatch covers complying with the requirements of Regulations 15 (7) or 16 shall, except as provided in paragraphs (7) to (10) inclusive of this Regulation, be assigned freeboards based on Table B of Regulation 28.

(7) Any Type ‘B’ ships of over 100 metres (328 feet) in length may be assigned freeboards less than those required under paragraph (6) of this Regulation provided that, in relation to the amount of reduction granted, the Administration is satisfied that:

 (a) the measures provided for the protection of the crew are adequate;

 (b) the freeing arrangements are adequate;

 (c) the covers in positions 1 and 2 comply with the provisions of Regulation 16 and have adequate strength; special care being given to their sealing and securing arrangements;

 (d) the ship, when loaded to its summer load waterline, will remain afloat in a satisfactory condition of equilibrium after flooding of any single damaged compartment at an assumed permeability of 0.95 excluding the machinery space; and

 (e) in such a ship, if over 225 metres (738 feet) in length, the machinery space shall be treated as a floodable compartment but with a permeability of 0.85.

For the guidance of Administrations in applying subparagraphs (d) and (e) of this paragraph the limits given in subparagraphs (3) (a), (b) and (c) may be regarded as satisfactory.

The relevant calculations may be based upon the following main assumptions:

 the vertical extent of damage is equal to the depth of the ship;

 the penetration of damage is not more than B/5;

 no main transverse bulkhead is damaged;

 the height of the centre of gravity above the base line is assessed allowing for homogeneous loading of cargo holds, and for 50 per cent of the designed capacity of consumable fluids and stores, etc.

(8) In calculating the freeboards for Type ‘B’ ships which comply with the requirements of paragraph (7) of this Regulation, the values from Table B of Regulation 28 shall not be reduced by more than 60 per cent of the difference between the ‘B’ and ‘A’ tabular values for the appropriate ship lengths.

(9) The reduction in tabular freeboard allowed under paragraph (8) of this Regulation may be increased up to the total difference between the values in Table A and those in Table B of Regulation 28 on condition that the ship complies with the requirements of Regulation 26 (1), (2), (3), (5) and (6), as if it were a Type ‘A’ ship, and further complies with the provisions of paragraph (7) (a) to (d) inclusive of this Regulation except that the reference in subparagraph (d) to the flooding of any single damaged compartment shall be treated as a reference to the flooding of any two adjacent fore and aft compartments, neither of which is the machinery space. Also any such ship of over 225 metres (738 feet) in length, when loaded to its summer load waterline, shall remain afloat in a satisfactory condition of equilibrium after flooding of the machinery space, taken alone, at an assumed permeability of 0.85.

(10) Type ‘B’ ships, which in position 1 have hatchways fitted with hatch covers which comply with the requirements of Regulation 15, other than paragraph (7), shall be assigned freeboards based upon the values given in Table B of Regulation 28 increased by the values given in the following table:

Freeboard increase over tabular freeboard for Type ‘B’ ships, for ships with hatch covers not complying with Regulation 15 (7) or 16

Length of ship

Freeboard increase

Length of ship

Freeboard increase

Length of ship

Freeboard increase

(metres)

(millimetres)

(metres)

(millimetres)

(metres)

(millimetres)

108 and
below


50


121


87


134


147

109

52

122

91

135

153

110

55

123

95

136

159

111

57

124

99

137

164

112

59

125

103

138

170

113

62

126

108

139

175

114

64

127

112

140

181

115

68

128

116

141

186

116

70

129

121

142

191

117

73

130

126

143

196

118

76

131

131

144

201

119

80

132

136

145

206

120

84

133

142

146

210

147

215

165

278

183

320

148

219

166

280

184

322

149

224

167

283

185

325

150

228

168

285

186

327

151

232

169

287

187

329

152

236

170

290

188

332

153

240

171

292

189

334

154

244

172

294

190

336

155

247

173

297

191

339

156

251

174

299

192

341

157

254

175

301

193

343

158

258

176

304

194

346

159

261

177

306

195

348

160

264

178

308

196

350

161

267

179

311

197

353

162

270

180

313

198

355

163

273

181

315

199

357

164

275

182

318

200

358

Freeboards at intermediate lengths of ship shall be obtained by linear interpolation.

Ships above 200 metres in length shall be dealt with by the Administration.

Freeboard increase over tabular freeboard for Type ‘B’ ships, for ships with hatch covers not complying with Regulation 15 (7) or 16

Length of ship

Freeboard increase

Length of ship

Freeboard increase

Length of ship

Freeboard increase

(feet)

(inches)

(feet)

(inches)

(feet)

(inches)

350 and
below


2.0

400
410

3.7
4.2

460
470

7.0
7.6

360

2.3

420

4.7

480

8.2

370

2.6

430

5.2

490

8.7

380

2.9

440

5.8

500

9.2

390

3.3

450

6.4

510

9.6

520

10.0

570

11.8

620

13.4

530

10.4

580

12.1

630

13.6

540

10.7

590

12.5

640

13.9

550

11.0

600

12.8

650

14.1

560

11.4

610

13.1

660

14.3

Freeboards at intermediate lengths of ship shall be obtained by linear interpolation.

Ships above 660 feet in length shall be dealt with by the Administration.

(11) A lighter, barge or other ship without independent means of propulsion shall be assigned a freeboard in accordance with the provisions of these Regulations. However, in the case of barges which are unmanned the requirements of Regulations 25, 26 (2) and (3) and 39 shall not apply. Such unmanned barges which have on the freeboard deck only small access openings closed by weathertight gasketed covers of steel or equivalent material may be assigned freeboards 25 per cent less than those calculated in accordance with these Regulations.

Regulation 28

Freeboard Tables

Type ‘A’ Ships

(1) The tabular freeboard for Type ‘A’ ships shall be determined from the following table:

TABLE A

Freeboard Table for Type ‘A’ Ship

Length of ship

Freeboard

Length of ship

Freeboard

Length of ship

Freeboard

(metres)

(millimetres)

(metres)

(millimetres)

(metres)

(millimetres)

24

200

54

490

84

897

25

208

55

503

85

911

26

217

56

516

86

926

27

225

57

530

87

940

28

233

58

544

88

955

29

242

59

559

89

969

30

250

60

573

90

984

31

258

61

587

91

999

32

267

62

600

92

1014

33

275

63

613

93

1029

34

283

64

626

94

1044

35

292

65

639

95

1059

36

300

66

653

96

1074

37

308

67

666

97

1089

38

316

68

680

98

1105

39

325

69

693

99

1120

40

334

70

706

100

1135

41

344

71

720

101

1151

42

354

72

733

102

1166

43

364

73

746

103

1181

44

374

74

760

104

1196

45

385

75

773

105

1212

46

396

76

786

106

1228

47

408

77

800

107

1244

48

420

78

814

108

1260

49

432

79

828

109

1276

50

443

80

841

110

1293

51

455

81

855

111

1309

52

467

82

869

112

1326

53

478

83

883

113

1342

114

1359

146

1903

178

2369

115

1376

147

1919

179

2381

116

1392

148

1935

180

2393

117

1409

149

1952

181

2405

118

1426

150

1968

182

2416

119

1442

151

1984

183

2428

120

1459

152

2000

184

2440

121

1476

153

2016

185

2451

122

1494

154

2032

186

2463

123

1511

155

2048

187

2474

124

1528

156

2064

188

2486

125

1546

157

2080

189

2497

126

1563

158

2096

190

2508

127

1580

159

2111

191

2519

128

1598

160

2126

192

2530

129

1615

161

2141

193

2541

130

1632

162

2155

194

2552

131

1650

163

2169

195

2562

132

1667

164

2184

196

2572

133

1684

165

2198

197

2582

134

1702

166

2212

198

2592

135

1719

167

2226

199

2602

136

1736

168

2240

200

2612

137

1753

169

2254

201

2622

138

1770

170

2268

202

2632

139

1787

171

2281

203

2641

140

1803

172

2294

204

2650

141

1820

173

2307

205

2659

142

1837

174

2320

206

2669

143

1853

175

2332

207

2678

144

1870

176

2345

208

2687

145

1886

177

2357

209

2696

210

2705

242

2959

274

3148

211

2714

243

2966

275

3153

212

2723

244

2973

276

3158

213

2732

245

2979

277

3163

214

2741

246

2986

278

3167

215

2749

247

2993

279

3172

216

2758

248

3000

280

3176

217

2767

249

3006

281

3181

218

2775

250

3012

282

3185

219

2784

251

3018

283

3189

220

2792

252

3024

284

3194

221

2801

253

3030

285

3198

222

2809

254

3036

286

3202

223

2817

255

3042

287

3207

224

2825

256

3048

288

3211

225

2833

257

3054

289

3215

226

2841

258

3060

290

3220

227

2849

259

3066

291

3224

228

2857

260

3072

292

3228

229

2865

261

3078

293

3233

230

2872

262

3084

294

3237

231

2880

263

3089

295

3241

232

2888

264

3095

296

3246

233

2895

265

3101

297

3250

234

2903

266

3106

298

3254

235

2910

267

3112

299

3258

236

2918

268

3117

300

3262

237

2925

269

3123

301

3266

238

2932

270

3128

302

3270

239

2939

271

3133

303

3274

240

2946

272

3138

304

3278

241

2953

273

3143

305

3281

306

3285

328

3353

347

3399

307

3288

329

3355

348

3401

308

3292

330

3358

349

3403

309

3295

331

3361

350

3406

313

3308

332

3363

351

3408

314

3312

333

3366

352

3410

315

3315

334

3368

353

3412

316

3318

335

3371

354

3414

317

3322

336

3373

355

3416

318

3325

337

3375

356

3418

319

3328

338

3378

357

3420

320

3331

339

3380

358

3422

321

3334

340

3382

359

3423

322

3337

341

3385

360

3425

323

3339

342

3387

361

3427

324

3342

343

3389

362

3428

325

3345

344

3392

363

3430

326

3347

345

3394

364

3432

327

3350

346

3396

365

3433

Freeboards at intermediate lengths of ship shall be obtained by linear interpolation.

Ships above 365 metres in length shall be dealt with by the Administration.

TABLE A

Freeboard Table for Type ‘A’ Ships

Length of ship

Freeboard

Length of ship

Freeboard

Length of ship

Freeboard

(feet)

(inches)

(feet)

(inches)

(feet)

(inches)

80

8.0

130

13.0

180

19.8

90

8.9

140

14.2

190

21.3

100

9.8

150

15.5

200

22.9

110

10.8

160

16.9

210

24.5

120

11.9

170

18.3

220

26.2

230

27.8

550

88.0

870

122.1

240

29.5

560

89.6

880

122.7

250

31.1

570

91.1

890

123.4

260

32.8

580

92.6

900

124.0

270

34.6

590

94.1

910

124.6

280

36.3

600

95.5

920

125.2

290

38.0

610

96.9

930

125.7

300

39.7

620

98.3

940

126.2

310

41.4

630

99.6

950

126.7

320

43.2

640

100.9

960

127.2

330

45.0

650

102.1

970

127.7

340

46.9

660

103.3

980

128.1

350

48.8

670

104.4

990

128.6

360

50.7

680

105.5

1000

129.0

370

52.7

690

106.6

1010

129.4

380

54.7

700

107.7

1020

129.9

390

56.8

710

108.7

1030

130.3

400

58.8

720

109.7

1040

130.7

410

60.9

730

110.7

1050

131.0

420

62.9

740

111.7

1060

131.4

430

65.0

750

112.6

1070

131.7

440

67.0

760

113.5

1080

132.0

450

69.1

770

114.4

1090

132.3

460

71.1

780

115.3

1100

132.6

470

73.1

790

116.1

1110

132.9

480

75.1

800

117.0

1120

133.2

490

77.1

810

117.8

1130

133.5

500

79.0

820

118.6

1140

133.8

510

80.9

830

119.3

1150

134.0

520

82.7

840

120.1

1160

134.3

530

84.5

850

120.7

1170

134.5

540

86.3

860

121.4

1180

134.7

1190

135.0

1200

135.2

 

 

Freeboards at intermediate lengths of ship shall be obtained by linear interpolation.

Ships above 1200 feet in length shall be dealt with by the Administration.

Type ‘B’ ships

(2) The tabular freeboard for Type ‘B’ ships shall be determined from the following table:

TABLE B

Freeboard Table for Type ‘B’ Ships

Length of ship

Freeboard

Length of ship

Freeboard

Length of ship

Freeboard

(metres)

(millimetres)

(metres)

(millimetres)

(metres)

(millimetres)

24

200

43

364

62

601

25

208

44

374

63

615

26

217

45

385

64

629

27

225

46

396

65

644

28

233

47

408

66

659

29

242

48

420

67

674

30

250

49

432

68

689

31

258

50

443

69

705

32

267

51

455

70

721

33

275

52

467

71

738

34

283

53

478

72

754

35

292

54

490

73

769

36

300

55

503

74

784

37

308

56

516

75

800

38

316

57

530

76

816

39

325

58

544

77

833

40

334

59

559

78

850

41

344

60

573

79

868

42

354

61

587

80

887

81

905

113

1543

145

2209

82

923

114

1565

146

2229

83

942

115

1587

147

2250

84

960

116

1609

148

2271

85

978

117

1630

149

2293

86

996

118

1651

150

2315

87

1015

119

1671

151

2334

88

1034

120

1690

152

2354

89

1054

121

1709

153

2375

90

1075

122

1729

154

2396

91

1096

123

1750

155

2418

92

1116

124

1771

156

2440

93

1135

125

1793

157

2460

94

1154

126

1815

158

2480

95

1172

127

1837

159

2500

96

1190

128

1859

160

2520

97

1209

129

1880

161

2540

98

1229

130

1901

162

2560

99

1250

131

1921

163

2580

100

1271

132

1940

164

2600

101

1293

133

1959

165

2620

102

1315

134

1979

166

2640

103

1337

135

2000

167

2660

104

1359

136

2021

168

2680

105

1380

137

2043

169

2698

106

1401

138

2065

170

2716

107

1421

139

2087

171

2735

108

1440

140

2109

172

2754

109

1459

141

2130

173

2774

110

1479

142

2151

174

2795

111

1500

143

2171

175

2815

112

1521

144

2190

176

2835

177

2855

209

3413

241

3893

178

2875

210

3430

242

3906

179

2895

211

3445

243

3920

180

2915

212

3460

244

3934

181

2933

213

3475

245

3949

182

2952

214

3490

246

3965

183

2970

215

3505

247

3978

184

2988

216

3520

248

3992

185

3007

217

3537

249

4005

186

3025

218

3554

250

4018

187

3044

219

3570

251

4032

188

3062

220

3586

252

4045

189

3080

221

3601

253

4058

190

3098

222

3615

254

4072

191

3116

223

3630

255

4085

192

3134

224

3645

256

4098

193

3151

225

3660

257

4112

194

3167

226

3675

258

4125

195

3185

227

3690

259

4139

196

3202

228

3705

260

4152

197

3219

229

3720

261

4165

198

3235

230

3735

262

4177

199

3249

231

3750

263

4189

200

3264

232

3765

264

4201

201

3280

233

3780

265

4214

202

3296

234

3795

266

4227

203

3313

235

3808

267

4240

204

3330

236

3821

268

4252

205

3347

237

3835

269

4264

206

3363

238

3849

270

4276

207

3380

239

3864

271

4289

208

3397

240

3880

272

4302

273

4315

302

4654

331

4965

274

4327

303

4665

332

4975

275

4339

304

4676

333

4985

276

4350

305

4686

334

4995

277

4362

306

4695

335

5005

278

4373

307

4704

336

5015

279

4385

308

4714

337

5025

280

4397

309

4725

338

5035

281

4408

310

4736

339

5045

282

4420

311

4748

340

5055

283

4432

312

4757

341

5065

284

4443

313

4768

342

5075

285

4455

314

4779

349

5150

286

4467

315

4790

350

5160

287

4478

316

4801

351

5170

288

4490

317

4812

352

5180

289

4502

318

4823

353

5190

290

4513

319

4834

354

5200

291

4525

320

4844

355

5210

292

4537

321

4855

356

5220

293

4548

322

4866

357

5230

294

4560

323

4878

358

5240

295

4572

324

4890

359

5250

296

4583

325

4899

360

5260

297

4595

326

4909

361

5268

298

4607

327

4920

362

5276

299

4618

328

4931

363

5285

300

4630

329

4943

364

5294

301

4642

330

4955

365

5303

Freeboards at intermediate lengths of ship shall be obtained by linear interpolation.

Ships above 365 metres in length shall be dealt with by the Administration.

TABLE B

Freeboard Table for Type ‘B’ Ships

Length of ship

Freeboard

Length of ship

Freeboard

Length of ship

Freeboard

(feet)

(inches)

(feet)

(inches)

(feet)

(inches)

80

8.0

380

63.2

680

133.3

90

8.9

390

65.7

690

135.3

100

9.8

400

68.2

700

137.1

110

10.8

410

70.7

710

139.0

120

11.9

420

73.2

720

140.9

130

13.0

430

75.7

730

142.7

140

14.2

440

78.2

740

144.5

150

15.5

450

80.7

750

146.3

160

16.9

460

83.1

760

148.1

170

18.3

470

85.6

770

149.8

180

19.8

480

88.1

780

151.5

190

21.3

490

90.6

790

153.2

200

22.9

500

93.1

800

154.8

210

24.7

510

95.6

810

156.4

220

26.6

520

98.1

820

158.0

230

28.5

530

100.6

830

159.6

240

30.4

540

103.0

840

161.2

250

32.4

550

105.4

850

162.8

260

34.4

560

107.7

860

164.3

270

36.5

570

110.0

870

165.9

280

38.7

580

112.3

880

167.4

290

41.0

590

114.6

890

168.9

300

43.3

600

116.8

900

170.4

310

45.7

610

119.0

910

171.8

320

48.2

620

121.1

920

173.3

330

50.7

630

123.2

930

174.7

340

53.2

640

125.3

940

176.1

350

55.7

650

127.3

950

177.5

360

58.2

660

129.3

960

178.9

370

60.7

670

131.3

970

180.3

980

181.7

1060

192.3

1140

202.3

990

183.1

1070

193.5

1150

203.5

1000

184.4

1080

194.8

1160

204.6

1010

185.8

1090

196.1

1170

205.8

1020

187.2

1100

197.3

1180

206.9

1030

188.5

1110

198.6

1190

208.1

1040

189.8

1120

199.9

1200

209.3

1050

191.0

1130

201.2

 

 

Freeboards at intermediate lengths of ship shall be obtained by linear interpolation.

Ships above 1200 feet in length shall be dealt with by the Administration.

Regulation 29

Correction to the Freeboard for Ships under 100 metres (328 feet) in length

The tabular freeboard for a Type ‘B’ ship of between 24 metres (79 feet) and 100 metres (328 feet) in length having enclosed superstructures with an effective length of up to 35 per cent of the length of the ship shall be increased by:

where  L = length of ship in metres,

 E = effective length of superstructure in metres as defined in Regulation 35;

or

where L = length of ship in feet,

 E = effective length of superstructure in feet as defined in Regulation 35.

Regulation 30

Correction for Block Coefficient

Where the block coefficient (Cb) exceeds 0.68, the tabular freeboard specified in Regulation 28 as modified, if applicable, by Regulations 27 (8), 27 (10) and 29 shall be multiplied by the factor .

Regulation 31

Correction for Depth

(1) Where D exceeds the freeboard shall be increased by

R millimetres where R is at lengths less than 120 metres and 250 at 120 metres length and above, or

R inches, where R is at lengths less than 393.6 feet and 3 at 393.6 feet length and above.

(2) Where D is less than no reduction shall be made except in a ship with an enclosed superstructure covering at least 0.6 L amidships, with a complete trunk, or combination of detached enclosed superstructures and trunks which extend all fore and aft, where the freeboard shall be reduced at the rate prescribed in paragraph (1) of this Regulation.

(3) Where the height of superstructure or trunk is less than the standard height, the reduction shall be in the ratio of the actual to the standard height as defined in Regulation 33.

Regulation 32

Correction for Position of Deck Line

Where the actual depth to the upper edge of the deck line is greater or less than D, the difference between the depths shall be added to or deducted from the freeboard.

Regulation 33

Standard Height of Superstructure

The standard height of a superstructure shall be as given in the following table:

Standard Height (in metres)

L

Raised

 

(metres)

Quarter Deck

All other Superstructures

30 or less

0.90

1.80

75

1.20

1.80

125 or more

1.80

2.30

Standard Height (in feet)

L

Raised

 

(feet)

Quarter Deck

All other Superstructures

98.5 or less

3.0

5.9

246

3.9

5.9

410 or more

5.9

7.5

The standard heights at intermediate lengths of the ship shall be obtained by linear interpolation.

Regulation 34

Length of Superstructure

(1) Except as provided in paragraph (2) of this Regulation, the length of a superstructure (S) shall be the mean length of the parts of the superstructure which lie within the length (L).

(2) Where the end bulkhead of an enclosed superstructure extends in a fair convex curve beyond its intersection with the superstructure sides, the length of the superstructure may be increased on the basis of an equivalent plane bulkhead. This increase shall be twothirds of the fore and aft extent of the curvature. The maximum curvature which may be taken into account in determining this increase is onehalf the breadth of the superstructure at the point of intersection of the curved end of the superstructure with its side.

Regulation 35

Effective Length of Superstructure

(1) Except as provided for in paragraph (2) of this Regulation, the effective length (E) of an enclosed superstructure of standard height shall be its length.

(2) In all cases where an enclosed superstructure of standard height is set in from the sides of the ship as permitted in Regulation 3 (10), the effective length shall be the length modified by the ratio of b/Bs, where

 b is the breadth of the superstructure at the middle of its length; and

 Bs is the breadth of the ship at the middle of the length of the superstructure.

Where a superstructure is set in for a part of its length, this modification shall be applied only to the set in part.

(3) Where the height of an enclosed superstructure is less than the standard height, the effective length shall be its length reduced in the ratio of the actual height to the standard height. Where the height exceeds the standard, no increase shall be made to the effective length of the superstructure.

(4) The effective length of a raised quarter deck, if fitted with an intact bulkhead, shall be its length up to a maximum of 0.6 L. Where the bulkhead is not intact, the raised quarter deck shall be treated as a poop of less than standard height.

(5) Superstructures which are not enclosed shall have no effective length.

Regulation 36

Trunks

(1) A trunk or similar structure which does not extend to the sides of the ship shall be regarded as efficient on the following conditions:

 (a) the trunk is at least as strong as a superstructure;

 (b) the hatchways are in the trunk deck, and the hatchway coamings and covers comply with the requirements of Regulations 13 to 16 inclusive and the width of the trunk deck stringer provides a satisfactory gangway and sufficient lateral stiffness. However, small access openings with watertight covers may be permitted in the freeboard deck;

 (c) a permanent working platform fore and aft fitted with guard rails is provided by the trunk deck, or by detached trunks connected to superstructures by efficient permanent gangways;

 (d) ventilators are protected by the trunk, by watertight covers or by other equivalent means;

 (e) open rails are fitted on the weather parts of the freeboard deck in way of the trunk for at least half their length;

 (f) the machinery casings are protected by the trunk, by a superstructure of at least standard height, or by a deckhouse of the same height and of equivalent strength;

 (g) the breadth of the trunk is at least 60 per cent of the breadth of the ship; and

 (h) where there is no superstructure, the length of the trunk is at least 0.6 L.

(2) The full length of an efficient trunk reduced in the ratio of its mean breadth to B shall be its effective length.

(3) The standard height of a trunk is the standard height of a superstructure other than a raised quarter deck.

(4) Where the height of a trunk is less than the standard height, its effective length shall be reduced in the ratio of the actual to the standard height. Where the height of hatchway coamings on the trunk deck is less than that required under Regulation 15 (1), a reduction from the actual height of trunk shall be made which corresponds to the difference between the actual and the required height of coaming.

Regulation 37

Deduction for Superstructures and Trunks

(1) Where the effective length of superstructures and trunks is 1.0 L, the deduction from the freeboard shall be 350 millimetres at 24 metres length of ship, 860 millimetres at 85 metres length, and 1070 millimetres at 122 metres length and above (14 inches at 79 feet length of ship, 34 inches at 279 feet length, and 42 inches at 400 feet length and above); deductions at intermediate lengths shall be obtained by linear interpolation.

(2) Where the total effective length of superstructures and trunks is less than 1.0 L the deduction shall be a percentage obtained from one of the following tables:

Percentage of Deduction for Type ‘A’ ships

 

Total Effective Length of Superstructures and Trunks

 

0

0.1L

0.2L

0.3L

0.4L

0.5L

0.6L

0.7L

0.8L

0.9L

1.0L

Percentage of deduction for all types of superstructures




0




7




14




21




31




41




52




63




75.3




87.7




100

Percentages at intermediate lengths of superstructures shall be obtained by linear interpolation.

Percentage of Deduction for Type ‘B’ ships

 

Line

Total Effective Length of Superstructures and Trunks

 

0

0.1L

0.2L

0.3L

0.4L

0.5L

0.6L

0.7L

0.8L

0.9L

1.0L

Ships with forecastle and without detached bridge 





I





0





5





10





15





23.5





32





46





63





75.3





87.7





100

Ships with forecastle and detached bridge 





II





0





6.3





12.7





19





27.5





36





46





63





75.3





87.7





100

Percentages at intermediate lengths of superstructures shall be obtained by linear interpolation.

(3) For ships of Type ‘B’:

 (a) Where the effective length of a bridge is less than 0.2 L, the percentages shall be obtained by linear interpolation between lines I and II.

 (b) Where the effective length of a forecastle is more than 0.4 L, the percentages shall be obtained from line II.

 (c) Where the effective length of a forecastle is less than 0.07 L, the above percentages shall be reduced by:

  where f is the effective length of the forecastle.

Regulation 38

Sheer

General

(1) The sheer shall be measured from the deck at side to a line of reference drawn parallel to the keel through the sheer line amidships.

(2) In ships designed with a rake of keel, the sheer shall be measured in relation to a reference line drawn parallel to the design load waterline.

(3) In flush deck ships and in ships with detached superstructures the sheer shall be measured at the freeboard deck.

(4) In ships with topsides of unusual form in which there is a step or break in the topsides, the sheer shall be considered in relation to the equivalent depth amidships.

(5) In ships with a superstructure of standard height which extends over the whole length of the freeboard deck, the sheer shall be measured at the superstructure deck. Where the height exceeds the standard the least difference (Z) between the actual and standard heights shall be added to each end ordinate. Similarly, the intermediate ordinates at distances of 1/6 L and 1/3 L from each perpendicular shall be increased by 0.444 Z and 0.111 Z respectively.

(6) Where the deck of an enclosed superstructure has at least the same sheer as the exposed freeboard deck, the sheer of the enclosed portion of the freeboard deck shall not be taken into account.

(7) Where an enclosed poop or forecastle is of standard height with greater sheer than that of the freeboard deck, or is of more than standard height, an addition to the sheer of the freeboard deck shall be made as provided in paragraph (12) of this Regulation.

Standard Sheer Profile

(8) The ordinates of the standard sheer profile are given in the following table:

Standard Sheer Profile

(Where L is in metres)

 

 

Ordinate

 

 

Station

(in millimetres)

Factor

After half

After Perpendicular ...

1

1/6 L from A.P. ......

3

1/3 L from A.P. ......

3

Amidships .........

0

1

Forward half

Amidships .........

0

1

1/3 L from F.P. ......

3

1/6 L from F.P. ......

3

Forward Perpendicular .

1

Standard Sheer Profile

(Where L is in feet)