| 1 | 2 |
THE PROTOCOL OF 1988 RELATING TO THE INTERNATIONAL CONVENTION ONLOAD LINES, 1966 AND INTERNATIONAL CONVENTION ON LOAD LINES, 1966 REVISEDBY THE PROTOCOL OF 1988

THE PROTOCOL OF 1988 RELATING TO THE INTERNATIONAL CONVENTION ONLOAD LINES, 1966 AND INTERNATIONAL CONVENTION ON LOAD LINES, 1966 REVISEDBY THE PROTOCOL OF 1988 Whole document TABLE OF CONTENTS THE PROTOCOL OF 1988 RELATING TO THE INTERNATIONAL CONVENTION ON LOAD LINES, 1966 INTERNATIONAL CONVENTION ON LOAD LINES, 1966 REVISED BY THE PROTOCOL OF 1988 ANNEX I REGULATIONS FOR DETERMINING LOAD LINES CHAPTER I GENERAL CHAPTER II CONDITIONS OF ASSIGNMENT OF FREEBOARD CHAPTER III FREEBOARDS CHAPTER IV SPECIAL REQUIREMENTS FOR SHIPS ASSIGNED TIMBER FREEBOARDS ANNEX II ZONES, AREAS AND SEASONAL PERIODS ANNEX III CERTIFICATES INTERNATIONAL LOAD LINE CERTIFICATE INTERNATIONAL LOAD LINE EXEMPTION CERTIFICATE THE PROTOCOL OF 1988 RELATING TO THE INTERNATIONAL CONVENTION ON LOAD LINE 1966 as adopted by the Conference on 11 November 1988 THE PARTIES TO THE PRESENT PROTOCOL, BEING PARTIES to the International Convention on Load Lines, 1966, done at London on 5 April 1966, RECOGNIZING the significant contribution which is made by the above-mentioned Convention to the promotion of the safety of ships and property at sea and the lives of persons on board, RECOGNIZING ALSO the need to improve further the technical provisions of the above-mentioned Convention, RECOGNIZING FURTHER the need for the introduction into the above-mentioned Convention of provisions for survey and certification harmonized with corresponding provisions in other international instruments, CONSIDERING that these needs may best be met by the conclusion of a Protocol relating to the International Convention on Load Lines, 1966, HAVE AGREED as follows: ARTICLE I General obligations 1 The Parties to the present Protocol undertake to give effect to the provisions of the present Protocol and the Annexes 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 Annexes hereto.

2 As between the Parties to the present Protocol, the provisions of the International Convention on Load Lines, 1966 (hereinafter referred to as "the Convention"), except article 29, shall apply subject to the modifications and additions set out in the present Protocol.

3 With respect to ships entitled to fly the flag of a State which is not a Party 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 II Existing certificates 1 Notwithstanding any other provisions of the present Protocol, any International Load Line Certificate which is current when the present Protocol enters into force in respect of the Government of the State whose flag the ship is entitled to fly shall remain valid until it expires.

2 A Party to the present Protocol shall not issue certificates under, and in accordance with, the provisions of the International Convention on Load Lines, 1966, as adopted on 5 April 1966.

ARTICLE III Communication of information The Parties to the present Protocol undertake to communicate to, and deposit with, the Secretary-General of the International Maritime Organization (hereinafter referred to as "the Organization"): (a) the text of laws, decrees, orders and regulations and other instruments which have been promulgated on the various matters within the scope of the present Protocol; (b) a list of nominated surveyors or recognized organizations which are authorized to act on their behalf in the administration of load line matters for circulation to the Parties for information of their officers, and a notification of the specific responsibilities and conditions of the authority delegated to those nominated surveyors or recognized organizations; and (c) a sufficient number of specimens of their certificates issued under the provisions of the present Protocol.

ARTICLE IV Signature, ratification, acceptance, approval and ac-cession 1 The present Protocol shall be open for signature at the Headquarters of the Organization from 1 March 1989 to 28 February 1990 and shall thereafter remain open for accession. Subject to the provisions of paragraph 3, States may express their consent to be bound by 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 Secretary-General 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, accepted or acceded to the Convention.

ARTICLE V Entry into force 1 The present Protocol shall enter into force twelve months after the date on which both the following conditions have been met: (a) 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 expressed their consent to be bound by it in accordance with article IV, and (b) the conditions for the entry into force of the Protocol of 1988 relating to the International Convention for the Safety of Life at Sea, 1974 have been met, provided that the present Protocol shall not enter into force before 1 February 1992.

2 For States which have deposited an instrument of ratification, acceptance, approval or accession in respect of the present Protocol after the conditions for entry into force thereof have been met but prior to the date of entry into force, the ratification, acceptance, approval or accession shall take effect on the date of entry into force of the present Protocol or three months after the date of deposit of the instrument, whichever is the later date.

3 Any instrument of ratification, acce 4 After the date on which an amendment to the present Protocol or an amendment, as between the Parties to the present Protocol, to the Convention is deemed to have been accepted under article VI, any instrument of ratification, acceptance, approval or accession deposited shall apply to the present Protocol or the Convention as amended.

ARTICLE VI Amendments 1 The present Protocol and, as between the Parties to the present Protocol, the Convention may be amended by either of the procedures specified in the following paragraphs.

2 Amendment after consideration within the Organization: (a) Any amendment proposed by a Party to the present Protocol shall be submitted to the Secretary-General of the Organization, who shall then circulate it to all Members of the Organization and all Contracting Governments to the Convention at least six months prior to its consideration.

(b) Any amendment proposed and circulated as above shall be referred to the Maritime Safety Committee of the Organization for consideration.

(c) States which are Parties to the present Protocol, whether or not Members of the Organization, shall be entitled to participate in the proceedings of the Maritime Safety Committee for the consideration and adoption of amendments.

(d) Amendments shall be adopted by a two-thirds majority of the Parties to the present Protocol present and voting in the Maritime Safety Committee expanded as provided for in subparagraph (c) (hereinafter referred to as "the expanded Maritime Safety Committee") on condition that at least one third of the Parties shall be present at the time of voting.

(e) Amendments adopted in accordance with subparagraph (d) shall be communicated by the Secretary-General of the Organization to all Parties to the present Protocol for acceptance.

(f) (i) An amendment to an article or Annex A to the present Protocol or an amendment, as between Parties to the present Protocol, to an article of the Convention, shall be deemed to have been accepted on the date on which it is accepted any two thirds of the Parties to the present Protocol.

(ii) An amendment to Annex B to the present Protocol or an amendment, as between Parties to the present Protocol, to an Annex to the Convention, shall be deemed to have been accepted: (aa) at the end of two years from the date on which it is communicated to Parties to the present Protocol for acceptance; or (bb) at the end of a different period, which shall not be less than one year, if so determined at the time of its adoption by a two-thirds majority of the Parties present and voting in the expanded Maritime Safety Committee. However, if within the specified period either more than one third of the Parties, or Parties the combined merchant fleets of which constitute not less than fifty per cent of the gross tonnage of all the merchant fleets of all Parties, notify the Secretary-General of the Organization that they object to the amendment, it shall be deemed not to have been accepted.

(g) (i) An amendment referred to in subparagraph (f) (i) shall enter into force with respect to those Parties to the present Protocol which have accepted it, six months after the date on which it is deemed to have been accepted, and with respect to each Party which accepts it after that date, six months after the date of that Party's acceptance.

(ii) An amendment referred to in subparagraph (f) (ii) shall enter into force with respect to all Parties to the present Protocol, except those which have objected to the amendment under that subparagraph and which have not withdrawn such objections, six months after the date on which it is deemed to have been accepted. However, before the date set for entry into force, any Party may give notice to the Secretary-General of the Organization that it exempts itself from giving effect to that amendment for a period not longer than one year from the date of its entry into force, or for such longer period as may be determined by a two-thirds majority of the Parties present and voting in the expanded Maritime Safety Committee at the time of the adoption of the amendment.

3 Amendment by a Conference: (a) Upon the request of a Party to the present Protocol concurred in by at least one third of the Parties, the Organization shall convene a Conference of Parties to consider amendments to the present Protocol and the Convention.

(b) Every amendment adopted by such a Conference by a two-thirds majority of the Parties present and voting shall be communicated by the Secretary-General of the Organization to all Parties for acceptance.

(c) Unless the Conference decides otherwise, the amendment shall be deemed to have been accepted and shall enter into force in accordance with the procedures specified in subparagraphs 2 (f) and 2 (g) respectively, provided that references in these paragraphs to the expanded Maritime Safety Committee shall be taken to mean references to the Conference.

4 (a) A Party to present Protocol which has accepted an amendment referred to in subparagraph 2(f) (ii) which has entered into force shall not be obliged to extend the benefit of the present Protocol in respect of the certificates issued to a ship entitled to fly the flag of a State Party which, pursuant to the provisions of that subparagraph, has objected to the amendment and has not withdrawn such an objection, in so far as such certificates relate to matters covered by the amendment in question.

(b) A Party to the present Protocol which has accepted an amendment referred to in subparagraph 2 (f) (ii) which has entered into force shall extend the benefit of the present Protocol in respect of the certificates issued to a ship entitled to fly the flag of a Stage Party which, pursuant to the provisions of subparagraph 2 (g) (ii), has notified the Secretary-General of the Organization that it exempts itself from giving effect to the amendment.

5 Unless expressly provided otherwise, any amendment made under this article which relates 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 enters into force.

6 Any declaration of acceptance of, or objection to, an amendment or any notice given under subparagraph 2 (g) (ii) shall be submitted in writing to the Secretary-General of the Organization, who shall inform all Parties to the present Protocol of any such submission and the date of its receipt.

7 The Secretary-General of the Organization shall inform all Parties to the present Protocol of any amendments which enter into force under this article, together with the date on which each such amendment enters into force.

ARTICLE VII 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 Secretary-General 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 Secretary-General 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. Such denunciation shall take effect on the same date as denunciation of the Convention takes effect according to paragraph (3) of article 30 of the Convention.

ARTICLE VIII Depositary 1 The present Protocol shall be deposited with the Secretary-General of the Organization (hereinafter referred to as "the depositary").

2 The depositary shall: (a) inform the Governments of 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 the Governments of 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 IX Languages The present Protocol is established in a single original in the Arabic, Chinese, English, French, Russian and Spanish languages, each text being equally authentic.

DONE AT LONDON this eleventh day of November one thousand nine hundred and eighty eight.

IN WITNESS WHEREOF the undersigned *, being duly authorized by their respective Governments for that purpose, have signed the present Protocol.

[* *(c) omitted.] INTERNATIONAL CONVENTION ON LOAD LINES, 1966 REVISED BY THE PROTOCOL OF 1988 The Contracting Governments, DESIRING to establish uniform principles and rules with respect to the limits to which ships on international voyages may be loaded having regard to the need for safeguarding life and property at sea; CONSIDERING that this end may best be achieved by conclusion of a Convention; HAVE AGREED as follows: 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 the 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. Where the stem contour is concave above the waterline at 85% of the least moulded depth, both the forward terminal of the total length and the fore-side of the stem respectively shall be taken at the vertical projection to that waterline of the aftermost point of the stem contour (above that waterline). In ships designed with a rake of keel the waterline on which this length is measured shall be paralleled to the designed waterline.

(9) "Anniversary date" means the day and the month of each year which will correspond to the date of expiry of the relevant certificate.

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 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, unless expressly provided otherwise, are 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 the 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 Exceptions (1) The present Convention shall not apply to: (a) ships of war; (b) new ships of less than 24 metres 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 63¡ãW; (b) the Caspian Sea; (c) the Plate, Parana and Uruguay Rivers as far east as a rhumb line drawn between Punta Rasa (Cabo San Antonio), 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 Inter-Governmental 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. 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 Surveys and Marking The surveys 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 surveys 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 surveys and marking.

Article 14 Initial, renewal and annual surveys (1) A ship shall be subjected to the surveys specified below: (a) An initial 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. The survey shall be such as to ensure that the arrangements, materials and scantlings fully comply with the requirements of the present Convention.

(b) A renewal survey at intervals specified by the Administration but not exceeding 5 years, except where paragraphs (2), (5), (6) and (7) of article 19 are applicable, which shall be such as to ensure that the structure, equipment, arrangements, materials and scantlings fully comply with the requirements of the present Convention.

(c) An annual survey within 3 months before or after each anniversary date of the certificate to ensure that: (i) alterations have not been made to the hull or superstructures which would affect the calculations determining the position of the load line; (ii) the fittings and appliances for the protection of openings, guard rails, freeing ports and means of access to crew's quarters are maintained in an effective condition; (iii) the freeboard marks are correctly and permanently indicated; (iv) the information required by regulation 10 is provided.

(2) The annual surveys referred to in paragraph (1) (c) of this article shall be endorsed on the International Load Line Certificate or 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 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.

Article 17 Issue or endorsement of Certificate by another Govern-ment (1) A Contracting Government may, at the request of another Contracting Governments, 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 to the ship and, where appropriate, endorse or authorize the endorsement of the certificate on 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 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 The certificates shall be drawn up in the form corresponding to the model given in Annex III to the present Convention. If the language used is neither English nor French, the text shall include a translation into one of these languages.

Article 19 Duration and Validity of Certificates (1) An International Load Line Certificate shall be issued for a period specified by the Administration, which shall not exceed 5 years.

(2) (a) Notwithstanding the requirements of paragraph (1), when the renewal survey is completed within 3 months before the expiry date of the existing certificate, the new certificate shall be valid from the date of completion of the renewal survey to a date not exceeding 5 years from the date of expiry of the existing certificate.

(b) When the renewal survey is completed after the expiry date of the existing certificate, the new certificate shall be valid from the date of completion of the renewal survey to a date not exceeding 5 years from the date of expiry of the existing certificate.

(c) When the renewal survey is completed more than 3 months before the expiry date of the existing certificate, the new certificate shall be valid from the date of completion of the renewal survey to a date not exceeding 5 years from the date of completion of the renewal survey.

(3) If a certificate is issued for a period of less than 5 years, the Administration may extend the validity of a certificate beyond the expiry date to the maximum period specified in paragraph (1), provided that the annual surveys referred to in article 14 applicable when a certificate is issued for a period of 5 years are carried out as appropriate.

(4) If, after the renewal survey referred to in paragraph (1) (b) of article 14, a new certificate cannot be issued to the ship before the expiry date of the existing certificate, the person or organization carrying out the survey may extend the validity of the existing certificate for a period which shall not exceed 5 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, materials or scantlings, which affect the ship's freeboard.

(5) If a ship at the time when a certificate expires is not in a port in which it is to be surveyed, the Administration may extend the period of validity of the certificate but this extension shall be granted only for the purpose of allowing the ship to complete its voyage to the port in which it is to be surveyed, and then only in cases where it appears proper and reasonable to do so. No certificate shall be extended for a period longer than 3 months, and a ship to which an extension is granted shall not, on its arrival in the port in which it is to be surveyed, be entitled by virtue of such extension to leave that port without having a new certificate. When the renewal survey is completed, the new certificate shall be valid to a date not exceeding 5 years from the date of expiry of the existing certificate before the extension was granted.

(6) A certificate issued to a ship engaged on short voyages with has not been extended under the foregoing provisions of this article may be extended by the Administration for a period of grace of up to one month from the date of expiry stated on it. When the renewal survey is completed the new certificate shall be valid to a date not exceeding 5 years from the date of expiry of the existing certificate before the extension was granted.

(7) In special circumstances, as determined by the Administration, a new certificate need not be dated from the date of expiry of the existing certificate as required by paragraphs (2), (5) and (6). In these special circumstances, the new certificate shall be valid to a date not exceeding 5 years from the date of completion of the renewal survey.

(8) If an annual survey is completed before the period specified in article 14 then: (a) the anniversary date shown on the certificate shall be amended by endorsement to a date which shall not be more than 3 months later than the date on which the survey was completed; (b) the subsequent annual survey required by article 14 shall be completed at the intervals prescribed by that article using the new anniversary date; (c) the expiry date may remain unchanged provided one or more annual surveys are carried out so that the maximum intervals between the surveys prescribed by article 14 are not exceeded.

(9) An International Load Line Certificate shall cease to be valid 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 paragraph (1) (c) of article 14 are not maintained in an effective condition; (c) the certificate is not endorsed to show that the ship has been surveyed as provided in paragraph (1) (c) of article 14; (d) the structural strength of the ship is lowered to such an extent that the ship is unsafe.

(10) (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 5 years. Such certificate shall be subject to a renewal, endorsement, extension and cancellation procedure similar to that provided for an International Load Line Certificate 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.

(11) 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 purpose covered by the present Convention as having the same force as certificates issued by them.

Article 21 Control (1) Ships holding a certificate issued 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 these is a valid International Load Line Certificate 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 of the matters set out in subparagraphs (a) and (b) of paragraph (9) 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 sub-paragraph (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 Convention (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 non-governmental 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 the States, including even 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 sub-paragraph (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 sub-paragraph (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 two-thirds 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 two-thirds 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 two-thirds 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 two-thirds majority of those present and voting, including two-thirds 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 sub-paragraph (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 two-thirds 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 one-third 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 two-thirds 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 two-thirds 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 two-thirds majority of those present and voting, a conference convened under sub-paragraph (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 sub-paragraph (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 sub-paragraph (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 Secretary-General 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.

IN WITNESS WHEREOF the undersigned *, being duly authorized by their respective Governments for that purpose have signed the present Convention.

DONE at London this fifth day of April 1966.

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 Ship The Administration shall satisfy itself that the general structural strength of the ship 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 1-40 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 41-45 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 1-40 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 10-26 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.

(6) Regulation 22(2) and Regulation 27 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 Protocol of 1988 Relating to the International Convention on Load Lines, 1966 enters into force.

(7) New ships, other than those specified in paragraph (6), shall comply either with regulation 27 of the present Convention (as amended) or with regulation 27 of the International Convention on Load Lines, 1966 (as adopted on 5 April 1966), as determined by the Administration.

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.

Where the stem contour is concave above the waterline at 85% of the least moulded depth, both the forward terminal of the total length and the fore-side of the stem respectively shall be taken at the vertical projection to that waterline of the aftermost point of the stem contour (above that waterline). In ships designed with a rake of keel the waterline on which this length is measured shall be parallel to 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 foreside 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 deck and sides, 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, T (L-S) plus --- if the exposed free board deck is sheathed, L 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 sub-paragraph (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 same round of beam and area of topside section equal to that provided by the actual midship section.

(7) Block Coefficient. The block coefficient (C ) is given by: b |-------| | ¡÷ | | C = ----; | where | L¡¤B¡¤d | | 1 | |-------| ¡÷ 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 d ; and where 1 d is 85 per cent of the least moulded depth.

1 (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 in length and 25 millimetres 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.

Regulation 5 Load Line Mark The Load Line Mark shall consist of a ring 300 millimetres in outside diameter and 25 millimetres wide which is intersected by a horizontal line 450 millimetres in length and 25 millimetres 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.

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 in length and 25 millimetres in breadth which extend forward of, unless expressly provided otherwise, and at right angles to, a vertical line 25 millimetres in breadth marked at a distance 540 millimetres 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 in length and 25 millimetres in breadth which extend abaft unless expressly provided otherwise, and are at right angles to, a vertical line 25 millimetres in breadth marked at a distance 540 millimetres 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 in height and 75 millimetres in width.

Regulation 8 Detail 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 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) Every ship which is not required under the International Convention for Safety of Life at Sea in force to undergo an inclining test upon its completion shall: (a) be so inclined and the actual displacement and position of the centre of gravity shall be determined for the light ship condition; (b) have supplied for the use of its master such reliable information in an approved form as is necessary to enable him by rapid and simple processes to obtain accurate guidance as to the stability of the ship under all condition likely to be encountered in normal service; (c) carry on board at all times its approved stability information together with evidence that the information has been approved by the Administration; (d) if the Administration so approves, have its inclining test on completion dispensed with, provided basic stability data are available from the inclining test of a sister ship and it is shown to the satisfaction of the Administration that reliable stability information for the ship can be obtained from such basic data.

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 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 SecuredWeathertight 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 if in position 1.

450 millimetres if in position 2.

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

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

(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 on hatchways in position 1, and not less than 1.30 metric tons per square metre 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 for ships of 24 metres in length and shall be not less than 1.75 metric tons per square metre for ships of 100 metres in length. The corresponding loads on hatchways in position 2 may be reduced to 0.75 metric tons per square metre and 1. 30 metric tons per square metre respectively. In all cases values at intermediate lengths shall be obtained by linear 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 on hatchways in position 1 and not less than 1.30 metric tons per square metre 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 are 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 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 if that be greater.

For ships of not more than 100 metres 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 wide and spaced not more than 600 millimetres centre to centre; the cleats along each side or end shall be not more than 150 millimetres 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 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 in length shall be secured by at least two such securing appliances.

Regulation 16 Hatchways Closed by Weathertight Covers of Steel orother equivalent material fitted with Gaskets and Clamping Devices Hatchway Coamings (1) At position 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 on hatchways in position 1, and not less than 1.30 metric tons per square metre 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 if that be greater. The provisions of Regulation 15 (5) are applicable for ships of not more than 100 metres 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 above the deck if in position 1, and at least 380 millimetres 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 Superstruc-ture 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. In position 2 it shall be at least 380 millimetres.

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 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 above the deck, and in position 2 the coamings of which extend to more than 2.3 metres 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 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 above the deck; in position 2 the coamings shall be of a height at least 760 millimetres 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 on the freeboard deck and 450 millimetres 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, except as provided in paragraph (2), be fitted with efficient and accessible means for preventing water from passing inboard.

Normally each separate discharge shall have one automatic non-return valve with a positive means of closing it from a position above the freeboard deck. Where, however, the vertical distance from the summer load water line to the inboard end of the discharge pipe exceeds 0.01 L, the discharge may have two automatic non-return 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 non-return 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) Scuppers led through the shell from enclosed superstructures used for the carriage of cargo shall be permitted only where the edge of the freeboard deck is not immersed when the ship heels 5¡ã either way. In other cases the drainage shall be led inboard in accordance with the requirements of the International Convention for the Safety of Life at Sea in force.

(3) 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.

(4) Scuppers and discharge pipes originating at any level and penetrating the shell either more than 450 millimetres below the freeboard deck or less than 600 millimetres above the summer load waterline shall be provided with a non-return valve at the shell. This valve, unless required by paragraph (2), may be omitted if the piping is of substantial thickness.

(5) Scuppers leading from superstructures or deckhouses not fitted with doors complying with the requirements of Regulation 12 shall be led overboard.

(6) All shell fittings, and the valves 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 summer load line (or summer timber load line, if assigned) or 500 millimetres, 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 on-half of the area given by the formulae.

Where the length of bulwark (l) in the well is 20 metres or less A = 0.7 + 0.035 l square metres Where l exceeds 20 metres A = 0.07 l square metres l need in no case be taken as greater than 0.7L.

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 metre per metre of length of well for each 0.1 metre difference in height.

(2) In ships with no sheer the area calculated according to paragraph (1) shall be increased by 50 per cent. Where the sheer is less than the standard the percentage shall be obtained by linear interpolation.

(3) Where a ship fitted with a trunk 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 | AREA OF FREEING PORTS IN | | TRUNK IN RELATION TO | RELATION TO THE TOTAL | | THE BREADTH OF SHIP | 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. Two-thirds 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 apart. If shutters are fitted to freeing ports, ample clearance shall be provided to prevent jamming.

Hinges shall have pins or bearings of non-corrodible 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 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. The other courses shall be not more than 380 millimetres 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' Ships 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: (a) is designed to carry only liquid cargoes in bulk; (b) has a high integrity of the exposed deck with only small access openings to cargo compartments, closed by watertight gasketed covers of steel or equivalent material; and (c) has low permeability of loaded cargo compartments.

(3) A type `A' ship if over 150 m in length to which a freeboard less than type `B' has been assigned, when loaded in accordance with the requirements of paragraph (11), shall be able to withstand the flooding of any compartment or compartments, with an assumed permeability of 0.95, consequent upon the damage assumptions specified in paragraph (12), and shall remain afloat in a satisfactory condition of equilibrium as specified in paragraph (13). In such a ship the machinery space shall be treated as a floodable compartment, but with a permeability of 0.85.

(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) shall be considered as type `B' ships.

(6) 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 Regulation 16.

(7) Type `B' ships, which in position 1 have hatchways fitted with hatch covers complying with the requirements of Regulation 15 (7) or Regulation 16, shall, except as provided in paragraphs (8) to (13) inclusive of this regulation, be assigned freeboards based on table B of Regulation 28.

(8) Any type `B' ship of over 100 m in length may be assigned freeboards less than those required under paragraph (7), 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; and |---------------------- | Length of Freeboard Length of Freeboard Length of Freeboard | | ship increase ship increase ship increase | | (metres) (millimetres) (metres) (millimetres) (metres) (millimetres) | |----------------------| | 108 and below 50 139 175 170 290 | | 109 52 140 181 171 292 | | 110 55 141 186 172 294 | | 111 57 142 191 173 297 | | 112 59 143 196 174 299 | | 113 62 144 201 175 301 | | 114 64 145 206 176 304 | | 115 68 146 210 177 306 | | 116 70 147 215 178 308 | | 117 73 148 219 179 311 | | 118 76 149 224 180 313 | | 119 80 150 228 181 315 | | 120 84 151 232 182 318 | | 121 87 152 236 183 320 | | 122 91 153 240 184 322 | | 123 95 154 244 185 325 | | 124 99 155 247 186 327 | | 125 103 156 251 187 329 | | 126 108 157 254 188 332 | | 127 112 158 258 189 334 | | 128 116 159 261 190 336 | | 129 121 160 264 191 339 | | 130 126 161 267 192 341 | | 131 131 162 270 193 343 | | 132 136 163 273 194 346 | | 133 142 164 275 195 348 | | 134 147 165 278 196 350 | | 135 153 166 280 197 353 | | 136 159 167 283 198 355 | | 137 164 168 285 199 357 | | 138 170 169 287 200 358 | |---------------------- Freeboards at intermediate lengths of ship shall be obtained by linear interpolation. Ships above 200 m in length shall be dealt with by the Administration.

(d) the ship, when loaded in accordance with the requirements of paragraph (11), shall be able to withstand the flooding of any compartment or compartments, with an as summed permeability of 0.95, consequent upon the damage assumptions specified in paragraph (12), and shall remain afloat in a satisfactory condition of equilibrium, as specified in paragraph (13). In such a ship, if over 150 m in length, the machinery space shall be treated as a floodable compartment, but with a permeability of 0.85.

(9) In calculating the freeboards for type `B' ships which comply with the requirements of paragraph (8), (11), (12) and (13), the values from table B of regulation 28 shall not be reduced by more than 60% of the difference between the B and A tabular values for the appropriate ship lengths.

(10) (a) The reduction in tabular freeboard allowed under paragraph (9) 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: (i) regulation 26, other than paragraph (4), as if it were a type `A' ship; (ii) paragraph (8), (11) and (13) of this regulation; and (iii) paragraph (12) of this regulation, provided that throughout the length of the ship any one transverse bulkhead will be assumed to be damaged, such that two adjacent fore and aft compartments shall be flooded simultaneously, except that such damage will not apply to the boundary bulkheads of a machinery space.

(b) In such a ship, if over 150 m in length, the machinery space shall be treated as a floodable compartment, but with a permeability of 0.85.

Initial condition of loading (11) The initial condition of loading before flooding shall be determined as follows: (a) The ship is loaded to its summer load waterline on an imaginary even keel.

(b) When calculating the vertical centre of gravity, the following principles apply: (i) Homogeneous cargo is carried.

(ii) All cargo compartments, except those referred to under (iii), but including compartments intended to be partially filled, shall be considered fully loaded except that in the case of fluid cargoes each compartment shall be treated as 98% full.

(iii) If the ship is intended to operate at its summer load waterline with empty compartments, such compartments shall be considered empty provided the height of the centre of gravity so calculated is not less than as calculated under (ii).

(iv) 50% of the individual total capacity of all tanks and spaces fitted to contain consumable liquids and stores is allowed for. It shall be assumed that for each type of liquid, at least one transverse pair or a single centreline tank has maximum free surface, and the tank or combination of tanks to be taken into account shall be those where the effect of free surfaces is the greatest; in each tank the centre of gravity of the contents shall be taken at the centre of volume of the tank. The remaining tanks shall be assumed either completely empty or completely filled, and the distribution of consumable liquids between these tanks shall be effected so as obtain the greatest possible height above the keel for the centre of gravity.

(v) At an angle of heel of not more than 5¡ã in each compartment containing liquids, as prescribed in (ii) except that in the case of compartments containing consumable fluids, as prescribed in (iv), the maximum free surface effect shall be taken into account.

Alternatively, the actual free surface effects may be used, provided the methods of calculation are acceptable to the Administration.

(vi) Weights shall be calculated on the basis of the following values for specific gravities: salt water 1.025 fresh water 1.000 oil fuel 0.950 diesel oil 0.900 lubricating oil 0.900 Damage assumptions (12) The following principles regarding the character of the assumed damage apply: (a) The vertical extent of damage in all cases is assumed to be from the base line upwards without limit.

(b) The transverse extent of damage is equal to B/5 or 11.5 m, whichever is the lesser, measured inboard from the side of the ship perpendicularly to the centreline at the level of the summer load waterline.

(c) If damage of a lesser extent than specified in subparagraphs (a) and (b) results in a more severe condition, such lesser extent shall be assumed.

(d) Except where otherwise required by paragraph (10) (a), the flooding shall be confined to a single compartment between adjacent transverse bulkheads provided the inner longitudinal boundary of the compartment is not in a position within the transverse extent of assumed damage. Transverse boundary bulkheads of wing tanks which do not extent over the full breadth of the ship shall be assumed not to be damaged, provided they extend beyond the transverse extent of assumed damage prescribed in subparagraph (b).

If in a transverse bulkhead there are steps or recesses of not more than 3 m in length located within the transverse extent of assumed damage as defined in subparagraph (b), such transverse bulkhead may be considered intact and the adjacent compartment may be floodable singly. If, however, within the transverse extent of assumed damage there is a step or recess of more than 3 m in length in a transverse bulkhead, the two compartments adjacent to this bulkhead shall be considered as flooded. The step formed by the afterpeak bulkhead and the afterpeak tank top shall not be regarded as a step for the purpose of this regulation.

(e) Where a main transverse bulkhead is located within the transverse extent of assumed damage and is stepped in way of a double bottom or side tank by more than 3 m, the double bottom or side tanks adjacent to the stepped portion of the main transverse bulkhead shall be considered as flooded simultaneously. If this side tank has openings, into one or several holds, such as grain feeding holes, such hold or holds shall be considered as flooded simultaneously. Similarly in a ship designed for the carriage of fluid cargoes, if a side tank has openings into adjacent compartments, such adjacent compartments shall be considered as empty and as being flooded simultaneously. This provision is applicable even when such openings are fitted with closing appliances, except in the case of sluice valves fitted in bulkheads between tanks and where the valves are controlled from the deck. Manhole covers with closely-spaced bolts are considered equivalent to the unpierced bulkhead except in the case of openings in topside tanks making the topside tanks common to the holds.

(f) Where the flooding of any two adjacent fore and compartments is envisaged, main |---| | 2/3 | transverse watertight bulkheads shall be spaced at least |1/3* L | or |---| 14.5m, whichever is the lesser, in order to be considered effective. Where transverse bulkheads are spaced at a lesser distance, one or more of these bulkheads shall be assumed as nonexistent in order to achieve the minimum spacing between bulkheads.

Condition of equilibrium (13) The condition of equilibrium after flooding shall be regarded as satisfactory provided: (a) The final waterline after flooding, taking into account sinkage, heel and trim, is below the lower edge of any opening through which progressive downflooding may take place. Such openings shall include air pipes, ventilators and openings which are closed by means of weathertight doors (even if they comply with Regulation 12) or hatch covers (even if they comply with Regulation 16 or Regulation 19(4)), and may exclude those openings closed by means of manhole covers and flush scuttles (which comply with Regulation 18), cargo hatch covers of the type described in Regulation 27(2), remotely operated sliding watertight doors, and sidescuttles of the non-opening type (which comply with Regulation 23).

However, in the case of doors separating a main machinery space from a steering gear compartment, watertight doors may be of a hinged, quick-acting type kept closed at sea, whilst not in use, provided also that the lower sill of such doors is above the summer load waterline.

(b) If pipes, ducts or tunnels are situated within the assumed extent of damage penetration as defined in paragraph (12) (b), arrangements shall be made so that progressive flooding cannot thereby extend to compartments other than those assumed to be floodable in the calculation for each case of damage.

(c) The angle of heel due to unsymmetrical flooding does not exceed 15¡ã. If no part of the deck is immersed, an angle of heel of up to 17¡ã may be accepted.

(d) The metacentric height in the flooded condition is positive.

(e) When any part of the deck outside the compartment assumed flooded in a particular case of damage is immersed, or in any case where the margin of stability in the flooded condition may be considered doubtful, the residual stability is to be investigated. It may be regarded as sufficient if the righting lever curve has a minimum range of 20¡ãbeyond the position of equilibrium with a maximum righting lever of at least 0.1 m within this range. The area under the righting lever curve within this range shall be not less than 0.0175 m ¡¤rad. The Administration shall give consideration to the potential hazard presented by protected or unprotected openings which may become temporarily immersed within the range of residual stability.

(f) The Administration is satisfied that the stability is sufficient during intermediate stages of flooding.

Ships without means of propulsion (14) A lighter, barge or other ship without independent means of propulsion shall be assigned a freeboard in accordance with the provisions of these regulations. Barges which meet the requirements of paragraphs (2) and (3) may be assigned type `A' freeboards: (a) The Administration should especially consider the stability of barges with cargo on the weather deck. Deck cargo can only be carried on barges to which the ordinary type `B' freeboard is assigned.

(b) However, in the case of barges which are unmanned, the requirements of Regulations 25, 26 (2), 26 (3) and 39 shall not apply.

(c) Such unmanned barges which have on the freeboard deck only small access openings closed by watertight gasketed covers of steel or equivalent material may be assigned a freeboard 25% 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' Ships |----------------------------- | Length of | Length of | Length of | | ship | Freeboard | ship | Freeboard | ship | Freeboard | | (metres) | (millimetres) | (metres) | (millimetres) | (metres) | (millimetres) | |-----|------|-----|------|-----|----| | 24 | 200 | 38 | 316 | 52 | 467 | | 25 | 208 | 39 | 325 | 53 | 478 | | 26 | 217 | 40 | 334 | 54 | 490 | | 27 | 225 | 41 | 344 | 55 | 503 | | 28 | 233 | 42 | 354 | 56 | 516 | | 29 | 242 | 43 | 364 | 57 | 530 | | 30 | 250 | 44 | 374 | 58 | 544 | | 31 | 258 | 45 | 385 | 59 | 559 | | 32 | 267 | 46 | 396 | 60 | 573 | | 33 | 275 | 47 | 408 | 61 | 587 | | 34 | 283 | 48 | 420 | 62 | 600 | | 35 | 292 | 49 | 432 | 63 | 613 | | 36 | 300 | 50 | 443 | 64 | 626 | | 37 | 308 | 51 | 455 | 65 | 639 | |----------------------------- TABLE A (continued) |----------------------------- | Length of | Length of | Length of | | ship | Freeboard | ship | Freeboard | ship | Freeboard | | (metres) | (millimetres) | (metres) | (millimetres) | (metres) | (millimetres)| |-----|------|-----|------|-----|----| | 66 | 653 | 95 | 1059 | 124 | 1528 | | 67 | 666 | 96 | 1074 | 125 | 1546 | | 68 | 680 | 97 | 1089 | 126 | 1563 | | 69 | 693 | 98 | 1105 | 127 | 1580 | | 70 | 706 | 99 | 1120 | 128 | 1598 | | 71 | 720 | 100 | 1135 | 129 | 1615 | | 72 | 733 | 101 | 1151 | 130 | 1632 | | 73 | 746 | 102 | 1166 | 131 | 1650 | | 74 | 760 | 103 | 1181 | 132 | 1667 | | 75 | 773 | 104 | 1196 | 133 | 1684 | | 76 | 786 | 105 | 1212 | 134 | 1702 | | 77 | 800 | 106 | 1228 | 135 | 1719 | | 78 | 814 | 107 | 1244 | 136 | 1736 | | 79 | 828 | 108 | 1260 | 137 | 1753 | | 80 | 841 | 109 | 1276 | 138 | 1770 | | 81 | 855 | 110 | 1293 | 139 | 1787 | | 82 | 869 | 111 | 1309 | 140 | 1803 | | 83 | 883 | 112 | 1326 | 141 | 1820 | | 84 | 897 | 113 | 1342 | 142 | 1837 | | 85 | 911 | 114 | 1359 | 143 | 1853 | | 86 | 926 | 115 | 1376 | 144 | 1870 | | 87 | 940 | 116 | 1392 | 145 | 1886 | | 88 | 955 | 117 | 1409 | 146 | 1903 | | 89 | 969 | 118 | 1426 | 147 | 1919 | | 90 | 984 | 119 | 1442 | 148 | 1935 | | 91 | 999 | 120 | 1459 | 149 | 1952 | | 92 | 1014 | 121 | 1476 | 150 | 1968 | | 93 | 1029 | 122 | 1494 | 151 | 1984 | | 94 | 1044 | 123 | 1511 | 152 | 2000 | |----------------------------- TABLE A (continued) |----------------------------- | Length of | Length of | Length of | | ship | Freeboard | ship | Freeboard | ship | Freeboard | | (metres) | (millimetres) | (metres) | (millimetres) | (metres) | (millimetres)| |-----|------|-----|------|-----|----| | 153 | 2016 | 182 | 2416 | 211 | 2714 | | 154 | 2032 | 183 | 2428 | 212 | 2723 | | 155 | 2048 | 184 | 2440 | 213 | 2732 | | 156 | 2064 | 185 | 2451 | 214 | 2741 | | 157 | 2080 | 186 | 2463 | 215 | 2749 | | 158 | 2096 | 187 | 2474 | 216 | 2758 | | 159 | 2111 | 188 | 2486 | 217 | 2767 | | 160 | 2126 | 189 | 2497 | 218 | 1775 | | 161 | 2141 | 190 | 2508 | 219 | 2784 | | 162 | 2155 | 191 | 2519 | 220 | 2792 | | 163 | 2169 | 192 | 2530 | 221 | 2801 | | 164 | 2184 | 193 | 2541 | 222 | 2809 | | 165 | 2198 | 194 | 2552 | 223 | 2817 | | 166 | 2212 | 195 | 2562 | 224 | 2825 | | 167 | 2226 | 196 | 2572 | 225 | 2833 | | 168 | 2240 | 197 | 2582 | 226 | 2841 | | 169 | 2254 | 198 | 2592 | 227 | 2849 | | 170 | 2268 | 199 | 2602 | 228 | 2857 | | 171 | 2281 | 200 | 2612 | 229 | 2865 | | 172 | 2294 | 201 | 2622 | 230 | 2872 | | 173 | 2307 | 202 | 2632 | 231 | 2880 | | 174 | 2320 | 203 | 2641 | 232 | 2888 | | 175 | 2332 | 204 | 2650 | 233 | 2895 | | 176 | 2345 | 205 | 2659 | 234 | 2903 | | 177 | 2357 | 206 | 2669 | 235 | 2910 | | 178 | 2369 | 207 | 2678 | 236 | 2918 | | 179 | 2381 | 208 | 2687 | 237 | 2925 | | 180 | 2393 | 209 | 2696 | 238 | 2932 | | 181 | 2405 | 210 | 2705 | 239 | 2939 | |----------------------------- TABLE A (continued) |----------------------------- | Length of | Length of | Length of | | ship | Freeboard | ship | Freeboard | ship | Freeboard | | (metres) | (millimetres) | (metres) | (millimetres) | (metres) | (millimetres)| |-----|------|-----|------|-----|----| | 240 | 2946 | 269 | 3123 | 298 | 3254 | | 241 | 2953 | 270 | 3128 | 299 | 3258 | | 242 | 2959 | 271 | 3133 | 300 | 3262 | | 243 | 2966 | 272 | 3138 | 301 | 3266 | | 244 | 2973 | 273 | 3143 | 302 | 3270 | | 245 | 2979 | 274 | 3148 | 303 | 3274 | | 246 | 2986 | 275 | 3153 | 304 | 3278 | | 247 | 2993 | 276 | 3158 | 305 | 3281 | | 248 | 3000 | 277 | 3163 | 306 | 3285 | | 249 | 3006 | 278 | 3167 | 307 | 3288 | | 250 | 3012 | 279 | 3172 | 308 | 3292 | | 251 | 3018 | 280 | 3176 | 309 | 3295 | | 252 | 3024 | 281 | 3181 | 310 | 3298 | | 253 | 3030 | 282 | 3185 | 311 | 3302 | | 254 | 3036 | 283 | 3189 | 312 | 3305 | | 255 | 3042 | 284 | 3194 | 313 | 3308 | | 256 | 3048 | 285 | 3198 | 314 | 3312 | | 257 | 3054 | 286 | 3202 | 315 | 3315 | | 258 | 3060 | 287 | 3207 | 316 | 3318 | | 259 | 3066 | 288 | 3211 | 317 | 3322 | | 260 | 3072 | 289 | 3215 | 318 | 3325 | | 261 | 3078 | 290 | 3220 | 319 | 3328 | | 262 | 3084 | 291 | 3224 | 320 | 3331 | | 263 | 3089 | 292 | 3228 | 321 | 3334 | | 264 | 3095 | 293 | 3233 | 322 | 3337 | | 265 | 3101 | 294 | 3237 | 323 | 3339 | | 266 | 3106 | 295 | 3241 | 324 | 3342 | | 267 | 3112 | 296 | 3246 | 325 | 3345 | | 268 | 3117 | 297 | 3250 | 326 | 3347 | |----------------------------- TABLE A (continued) |----------------------------- | Length of | Length of | Length of | | ship | Freeboard | ship | Freeboard | ship | Freeboard | | (metres) | (millimetres) | (metres) | (millimetres) | (metres) | (millimetres)| |-----|------|-----|------|-----|----| | 327 | 3350 | 340 | 3382 | 353 | 3412 | | 328 | 3353 | 341 | 3385 | 354 | 3414 | | 329 | 3355 | 342 | 3387 | 355 | 3416 | | 330 | 3358 | 343 | 3389 | 356 | 3418 | | 331 | 3361 | 344 | 3392 | 357 | 3420 | | 332 | 3363 | 345 | 3394 | 358 | 3422 | | 333 | 3366 | 346 | 3396 | 359 | 3423 | | 334 | 3368 | 347 | 3399 | 360 | 3425 | | 335 | 3371 | 348 | 3401 | 361 | 3427 | | 336 | 3373 | 349 | 3403 | 362 | 3428 | | 337 | 3375 | 350 | 3406 | 363 | 3430 | | 338 | 3378 | 351 | 3408 | 364 | 3432 | | 339 | 3380 | 352 | 3410 | 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. 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 Length of Length of | | ship Freeboard ship Freeboard ship Freeboard | | (metres) (millimetres) (metres) (millimetres) (metres) (millimetres)| |-----------------------------| | 24 200 52 467 80 887 | | 25 208 53 478 81 905 | | 26 217 54 490 82 923 | | 27 225 55 503 83 942 | | 28 233 56 516 84 960 | | 29 242 57 530 85 978 | | 30 250 58 544 86 996 | | 31 258 59 559 87 1015 | | 32 267 60 573 88 1034 | | 33 275 61 587 89 1054 | | 34 283 62 601 90 1075 | | 35 292 63 615 91 1096 | | 36 300 64 629 92 1116 | | 37 308 65 644 93 1135 | | 38 316 66 659 94 1154 | | 39 325 67 674 95 1172 | | 40 334 68 689 96 1190 | | 41 344 69 705 97 1209 | | 42 354 70 721 98 1229 | | 43 364 71 738 99 1250 | | 44 374 72 754 100 1271 | | 45 385 73 769 101 1293 | | 46 396 74 784 102 1315 | | 47 408 75 800 103 1337 | | 48 420 76 816 104 1359 | | 49 432 77 833 105 1380 | | 50 443 78 850 106 1401 | | 51 455 79 868 107 1421 | |----------------------------- TABLE B (continued) |----------------------------- | Length of Length of Length of | | ship Freeboard ship Freeboard ship Freeboard | | (metres) (millimetres) (metres) (millimetres) (metres) (millimetres)| |-----------------------------| | 108 1440 137 2043 166 2640 | | 109 1459 138 2065 167 2660 | | 110 1479 139 2087 168 2680 | | 111 1500 140 2109 169 2698 | | 112 1521 141 2130 170 2716 | | 113 1543 142 2151 171 2735 | | 114 1565 143 2171 172 2754 | | 115 1587 144 2190 173 2774 | | 116 1609 145 2209 174 2795 | | 117 1630 146 2229 175 2815 | | 118 1651 147 2250 176 2835 | | 119 1671 148 2271 177 2855 | | 120 1690 149 2293 178 2875 | | 121 1709 150 2315 179 2895 | | 122 1729 151 2334 180 2915 | | 123 1750 152 2354 181 2933 | | 124 1771 153 2375 182 2952 | | 125 1793 154 2396 183 2970 | | 126 1815 155 2418 184 1988 | | 127 1837 156 2440 185 3007 | | 128 1859 157 2460 186 3025 | | 129 1880 158 2480 187 3044 | | 130 1901 159 2500 188 3062 | | 131 1921 160 2520 189 3080 | | 132 1940 161 2540 190 3098 | | 133 1959 162 2560 191 3116 | | 134 1979 163 2580 192 3134 | | 135 2000 164 2600 193 3151 | | 136 2021 165 2620 194 3167 | |----------------------------- TABLE B (continued) |----------------------------- | Length of Length of Length of | | ship Freeboard ship Freeboard ship Freeboard | | (metres) (millimetres) (metres) (millimetres) (metres) (millimetres)| |-----------------------------| | 195 3185 224 3645 253 4058 | | 196 3202 225 3660 254 4072 | | 197 3219 226 3675 255 4085 | | 198 3235 227 3690 256 4098 | | 199 3249 228 3705 257 4112 | | 200 3264 229 3720 258 4125 | | 201 3280 230 3735 259 4139 | | 202 3296 231 3750 260 4152 | | 203 3313 232 3765 261 4165 | | 204 3330 233 3780 262 4177 | | 205 3347 234 3795 263 4189 | | 206 3363 235 3808 264 4201 | | 207 3380 236 3821 265 4214 | | 208 3397 237 3835 266 4227 | | 209 3413 238 3849 267 4240 | | 210 3430 239 3864 268 4252 | | 211 3445 240 3880 269 4264 | | 212 3460 241 3893 270 4276 | | 213 3475 242 3906 271 4289 | | 214 3490 243 3920 272 4302 | | 215 3505 244 3934 273 4315 | | 216 3520 245 3949 274 4327 | | 217 3537 246 3965 275 4339 | | 218 3554 247 3978 276 4350 | | 219 3570 248 3992 277 4362 | | 220 3586 249 4005 278 4373 | | 221 3601 250 4018 279 4385 | | 222 3615 251 4032 280 4397 | | 223 3630 252 4045 281 4408 | |----------------------------- TABLE B (continued) |----------------------------- | Length of Length of Length of | | ship Freeboard ship Freeboard ship Freeboard | | (metres) (millimetres) (metres) (millimetres) (metres) (millimetres)| |-----------------------------| | 282 4420 310 4736 338 5035 | | 283 4432 311 4748 339 5045 | | 284 4443 312 4757 340 5055 | | 285 4455 313 4768 341 5065 | | 286 4467 314 4779 342 5075 | | 287 4478 315 4790 343 5086 | | 288 4490 316 4801 344 5097 | | 289 4502 317 4812 345 5108 | | 290 4513 318 4823 346 5119 | | 291 4525 319 4834 347 5130 | | 292 4537 320 4844 348 5140 | | 293 4548 321 4855 349 5150 | | 294 4560 322 4866 350 5160 | | 295 4572 323 4878 351 5170 | | 296 4583 324 4890 352 5180 | | 297 4595 325 4899 353 5190 | | 298 4607 326 4909 354 5200 | | 299 4618 327 4920 355 5210 | | 300 4630 328 4931 356 5220 | | 301 4642 329 4943 357 5230 | | 302 4654 330 4955 358 5240 | | 303 4665 331 4965 359 5250 | | 304 4676 332 4975 360 5260 | | 305 4686 333 4985 361 5268 | | 306 4695 334 4995 362 5276 | | 307 4704 335 5005 363 5285 | | 308 4714 336 5015 364 5294 | | 309 4725 337 5025 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.

Regulation 29 Correction to the Freeboard for Ships under 100metres in length The tabular freeboard for a Type `B' ship of between 24 metres and 100 metres 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: E 7.5(100-L)(0.35 - --) millimetres L where L = length of ship in metres; E = effective length of superstructure in metres as defined in Regulation 35.

Regulation 30 Correction for Block Coefficient Where the block coefficient (C ) exceeds 0.68, the tabular freeboard b specified in Regulation 28 as modified, if applicable, by Regulations 27 (8), 27 (10) and 29 shall be multiplied |-----| | C + 0.68 | | b | by the factor | ---- | | 1.36 | |-----| Regulation 31 Correction for Depth L L (1) Where D exceeds -- the freeboard shall be increased by (D - --)* 15 15 R millimetres, L where R is --- at lengths less than 120 metres and 250 at 120 metres 0.48 length and above.

L (2) Where D is less than -- no reduction shall be made except in a 15 ship with an enclosed superstructure covering at least 0.6L 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 | All other | | | | (metres) | Quarter Deck | Superstructures | |------|------|------| | 30 or less | 0.90 | 1.80 | | 75 | 1.20 | 1.80 | | 125 or more | 1.80 | 2.30 | |------------------- 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 two-thirds of the fore and aft extent of the curvature. The maximum curvature which may be taken into account in determining this increase is one-half 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 front 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; 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 | 0 | 7 | 14 | 21 | 31 | 41 | 52 | 63 | 75.3 | 87.7 | 100 | | types of | | | | | | | superstructures | | | | | | |------------------------ Percentages at intermediate lengths of superstructures and trunks shall be obtained by linear interpolation. Percentage of Deduction for Type `B' Ships |-------------------------- | | Total effective length of superstructures and trunks | | Line |--------------------| | | 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 | I | 0 | 5 | 10 | 15 | 23.5 | 32 | 46 | 63 | 75.3 | 87.7 | 100 | | without | | | | | | | | detached | | | | | | | | bridge | | | | | | | |-----|--|---|---|---|---|---|---|---|---|---|---|---| | Ships | | | | | | | | with | | | | | | | | forecastle | | | | | | | | and | II | 0 | 6.3 | 12.7 | 19 | 27.5 | 36 | 46 | 63 | 75.3 | 87.7 | 100 | | detached | | | | | | | | bridge | | | | | | | |-------------------------- Percentages at intermediate lengths of superstructures and trunks 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: (0.07L - f) 5¡Á ---- 0.07L 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 at 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 1/6L and 1/3L 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 | Factor | | | (in millimetres) | |-----|---------|---------|----| | After Perpendicular | L | | | 25 (-- + 10) | 1 | | 1 | 3 | | After half | --L from A. P. | L | | 6 | 11.1 (-- + 10) | 3 | | 1 | 3 | | --L from A. P. | L | | 3 | 2.8 (-- + 10) | 3 | | | 3 | | Amidships | 0 | 1 | |-----|---------|---------|----| | Amidships | 0 | 1 | | 1 | L | | Forward half | --L from F.P. | 5.6 (-- + 10) | 3 | | 3 | 3 | | 1 | L | | --L from F.P. | 22.2 (-- + 10) | 3 | | 6 | 3 | | | L | | Forward Perpendicular | 50 (-- + 10) | 1 | | | 3 | |------------------------- Measurement of Variation from Standard Sheer Profile (9) Where the sheer profile differs from the standard, the four ordinates of each profile in the forward or after half shall be multiplied by the appropriate factors given in the table of ordinates. The difference between the sums of the respective products and those of the standard divided by 8 measures the deficiency or excess of sheer in the forward or after half. The arithmetical mean of the excess or deficiency in the forward and after halves measures the excess or deficiency of sheer.

(10) Where the after half of the sheer profile is greater than the standard and the forward half is less than the standard, no credit shall be allowed for the part in excess and deficiency only shall be measured.

(11) Where the forward half of the sheer profile exceeds the standard, and the after portion of the sheer profile is not less than 75 per cent of the standard, credit shall be allowed for the part in excess; where the after part is less than 50 per cent of the standard no credit shall be given for the excess sheer forward. Where the after sheer is between 50 per cent and 75 per cent of the standard, intermediate allowances may be granted for excess sheer forward.

(12) Where sheer credit is given for a poop or forecastle the following formula shall be used: y L' s = -- -- 3 L Where s = sheer credit, to be deducted from the deficiency or added to the excess of sheer, y = difference between actual and standard height of superstructure at the after or forward perpendicular, L' = mean enclosed length of poop or forecastle up to a maximum length of 0.5 L, L = length of ship as defined in Regulation 3 (1) of this Annex.

The above formula provides a curve in the form of a parabola tangent to the actual sheer curve at the freeboard deck and intersecting the end ordinate at a point below the superstructure deck a distance equal to the standard height of a superstructure. The superstructure deck shall not be less than standard height above this curve at any point. This curve shall be used in determining the sheer profile for forward and after halves of the ship.

Correction for Variations from Standard Sheer Profile (13) The correction for sheer shall be the deficiency or excess of sheer (see paragraphs (9) to (11) inclusive of this Regulation), multiplied by S 0.75 - -- 2L where S is the total length of enclosed superstructures.

Addition for Deficiency in Sheer (14) Where the sheer is less than the standard, the correction for deficiency in sheer (see paragraph (13) of this Regulation) shall be added to the freeboard.

Deduction for Excess Sheer (15) In ships where an enclosed superstructure covers 0.1 L before and 0.1 L abaft amidships, the correction for excess of sheer as calculated under the provisions of paragraph (13) of this Regulation shall be deducted from the freeboard; in ships where no enclosed superstructure covers amidships, no deduction shall be made from the freeboard; where an enclosed superstructure covers less than 0.1 L before and 0.1 L abaft amidships, the deduction shall be obtained by linear interpolation. The maximum deduction for excess sheer shall be at the rate of 125 millimetres per 100 metres of length.

Regulation 39 Minimum Bow Height (1) The bow height defined as the vertical distance at the forward perpendicular between the waterline corresponding to the assigned summer freeboard and the designed trim and the top of the exposed deck at side shall be not less than: for ships below 250 metres in length, |------------| | L 1.36 | | 56L (1 - --) ----millimetres; | | 500 C + 0.68 | | b | |------------| for ships of 250 metres and above in length, |---------| | 1.36 | | 7000 ---- millimetres; | | C + 0.68 | | b | |---------| where L is the length of the ship in metres, |---| | C | is the block coefficient which is to be taken as not less | b | |---| than 0.68.

(2) Where the bow height required in paragraph (3) of this Regulation is obtained by sheer, the sheer shall extend for at least 15 per cent of the length of the ship measured from the forward perpendicular. Where it is obtained by fitting a superstructure, such superstructure shall extend from the stem to a point at least 0.07 L abaft the forward perpendicular, and it shall comply with the following requirements: (a) for ships not over 100 metres in length it shall be enclosed as defined in Regulation 3 (10), and (b) for ships over 100 metres in length it need not comply with Regulation 3 (10) but shall be fitted with closing appliances to the satisfaction of the Administration.

(3) Ships which, to suit exceptional operational requirements, cannot meet the requirements of paragraphs (1) and (2) of this Regulation may be given special consideration by the Administration.

Regulation 40 Minimum Freeboards Summer Freeboard (1) The minimum freeboard in summer shall be the freeboard derived from the tables in Regulation 28 as modified by the corrections in Regulations 27, as applicable, 29, 30, 31, 32, 37, 38 and, if applicable, 39.

(2) The freeboard in salt water, as calculated in accordance with paragraph (3) of this Regulation, but without the correction for deck line, as provided by Regulation 32, shall not be less than 50 millimetres. For ships having in position 1 hatchways with covers which do not comply with the requirements of Regulations 15 (7), 16 or 26, the freeboard shall be not less than 150 millimetres.

Tropical Freeboard (3) The minimum freeboard in the Tropical Zone shall be the freeboard obtained by a deduction from the summer freeboard of one forty-eighth of the summer draught measured from the top of the keel to the centre of the ring of the load line mark.

(4) The freeboard in salt water, as calculated in accordance with paragraph (1) of this Regulation, but without the correction for deck line, as provided by Regulation 32, shall not be less than 50 millimetres. For ships having in position 1 hatchways with covers which do not comply with the requirements of Regulations 15 (7), 16 or 26, the freeboard shall be not less than 150 millimetres.

Winter Freeboard (5) The minimum freeboard in winter shall be the freeboard obtained by an addition to the summer freeboard of one forty-eighth of summer draught, measured from the top of the keel to the centre of the ring of the load line mark.

Winter North Atlantic Freeboard (6) The minimum freeboard for ships of not more than 100 metres in length, which enter any part of the North Atlantic defined in Regulation 52 (Annex II) during the winter seasonal period, shall be the winter freeboard plus 50 millimetres. For other ships, the Winter North Atlantic Freeboard shall be the winter freeboard.

Fresh Water Freeboard (7) The minimum freeboard in fresh water of unit density shall be obtained by deducting from the minimum freeboard in salt water: ¡÷ -- centimetres 40T where ¡÷ = displacement in salt water in tons at the summer load waterline, T = tons per centimetre immersion in salt water at the summer load waterline.

(8) Where the displacement at the summer load waterline cannot be certified, the deduction shall be one forty-eighth of summer draught, measured from the top of the keel to the centre of the load line mark.

CHAPTER IV SPECIAL REQUIREMENTS FOR SHIPS ASSIGNED TIMBER FREE-BOARDS Regulation 41 Application of this Chapter Regulations 42 to 45 inclusive apply only to ships to which timber load lines are assigned.
| 1 | 2 |