Cap. 369AD 《商船(安全)(載重線)規例》Merchant Shipping (Safety) (Load Line) Regulations
生效中Merchant Shipping (Safety) (Load Line) Regulations
(Cap. 369, sections 51, 63, 64, 102, 107 and 112B)
(Enacting provision omitted—E.R. 3 of 2021)
[2 August 1991]
(Format changes—E.R. 3 of 2021)
1. Citation
These regulations may be cited as the Merchant Shipping (Safety) (Load Line) Regulations.
(Omitted as spent—E.R. 3 of 2021)
1A. Interpretation
In these regulations, except where the context otherwise requires—
2008 IS Code (《2008年IS規則》) means the International Code on Intact Stability, 2008, adopted by IMO resolution MSC.267(85), as from time to time revised or amended by any revision or amendment that applies to Hong Kong; (L.N. 47 of 2018) amidships (船舯) means the middle of the ship’s length (L); Annex I (《附則I》) means Annex I to the Convention of 1966; (L.N. 47 of 2018) Annex III (《附則III》) means Annex III to the Convention of 1966; (L.N. 47 of 2018) anniversary date (周年日期) means the date in each year corresponding to the date of expiry of the load line certificate; (L.N. 35 of 2000) Assigning Authority (勘定當局)—see regulation 2(1); (L.N. 47 of 2018) constructed (建造), in relation to a ship, means the stage at which— (a)the keel of the ship is laid; or (b)construction identifiable with the ship begins, and assembly of the ship has commenced comprising at least 50 tonnes or 1% of the estimated mass of all structural material, whichever is less; (L.N. 47 of 2018) deck cargo regulations (艙面貨物規例) means the deck cargo regulations for the time being in force under section 105 of the Ordinance; freeboard (乾舷) means the distance measured vertically downwards amidships from the upper edge of the deck-line described in regulation 14 to the position at which the upper edge of the load line appropriate to the freeboard is to be marked; freeboard deck (乾舷甲板)— (L.N. 47 of 2018) (a)in relation to a pre-2005 ship, means the deck from which the freeboards assigned to the ship are calculated, being either— (L.N. 47 of 2018)(i)the uppermost complete deck exposed to weather and sea, which has permanent means of closing all openings in its weather portions, and below which all openings in the sides of the ship are fitted with permanent means of watertight closing; or(ii)at the request of the owner and subject to the approval of the Director, a deck lower than that described in subparagraph (i), subject to its being a complete and permanent deck which is continuous both— (L.N. 47 of 2018)(A)in a fore and aft direction at least between the machinery space and peak bulkheads of the ship; and(B)athwartships,a deck which is stepped being taken to consist for this purpose of the lowest line of the deck and the continuation of that line parallel to the upper part of the deck; or (L.N. 47 of 2018) (b)in relation to a post-2005 ship, has the meaning given by Regulation 3(9) of Annex I; (L.N. 47 of 2018) IMO means the International Maritime Organization; (L.N. 47 of 2018) length (長度) and the symbol (L)— (L.N. 47 of 2018) (a)in relation to a pre-2005 ship, means the greater of the following— (L.N. 47 of 2018)(i)96% of the total length of the ship on a waterline at 85% of the least moulded depth measured from the top of the keel; or(ii)the length measured from the fore side of the stem to the axis of the rudder stock on that waterline.Where the stem contour is concave above the waterline at 85% of the least moulded depth, both the forward terminal of the total length of the ship 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 the designed waterline; or (L.N. 35 of 2000; L.N. 47 of 2018) (b)in relation to a post-2005 ship, has the meaning given by Regulation 3(1) of Annex I; (L.N. 47 of 2018) load line certificate (載重線證明書) means a load line certificate issued pursuant to these regulations; moulded depth (型深), in relation to a ship, has the meaning given by Regulation 3(5) of Annex I; (L.N. 47 of 2018) post-2005 ship (2005年後船舶) means a ship constructed on or after 1 January 2005; (L.N. 47 of 2018) pre-2005 ship (2005年前船舶) means a ship constructed before 1 January 2005; (L.N. 47 of 2018) rake of keel (傾斜龍骨) means the inclination of the keel to a horizontal baseline; (L.N. 47 of 2018) sailing ship (帆船) means a ship designed to carry sail, whether as the sole means of propulsion or as a supplementary means; Surveyor (驗船師) means— (a)a Government surveyor appointed under section 5 of the Ordinance; or (b)a surveyor appointed by a person authorized by the Director; (L.N. 47 of 2018) watertight (水密) means capable of preventing the passage of water in any direction.No provision.
Unless the context otherwise requires section 47 of the Ordinance shall apply to the interpretation of these regulations as it applies to the interpretation of Part IV of the Ordinance.
1AB. Meaning of length
For the purposes of Part IV of the Ordinance, the length of a ship has the meaning given by regulation 1A(1).
1B. Ships to which the regulations apply
These regulations apply to all ships except— (L.N. 47 of 2018)
ships of war;
fishing vessels;
pleasure vessels not engaged in trade; and (L.N. 47 of 2018)
(Repealed 43 of 1999 s. 91)
local vessels. (L.N. 47 of 2018)
In this regulation—
fishing vessel (漁船) means a ship that is used for catching fish, whales, seals, walrus or other living resources of the sea; local vessel (本地船隻) means a local vessel as defined by section 2 of the Merchant Shipping (Local Vessels) Ordinance (Cap. 548); pleasure vessel (遊樂船隻) means a vessel primarily used for sport or recreation. (L.N. 47 of 2018)Part I* — Surveys and Certificates
| Editorial Note: | |
| Various amendments were made by the Merchant Shipping (Safety) (Load Line) (Amendment) Regulation 2000 (L.N. 35 of 2000) (Commencement date: 1 May 2000). See section 17 of that Regulation for the savings. | |
2. Application to Assigning Authority for the assignment of freeboards and issue of load line certificates
The Assigning Authority for the purposes of these regulations shall be the Director or any person authorised by the Director. (L.N. 47 of 2018)
Application for the assignment of freeboards to a ship and for the issue of a load line certificate in respect of the ship shall be made to an Assigning Authority by or on behalf of the owner of the ship, who shall furnish to the Authority such plans, drawings, specifications and other documents and information relating to the design and construction of the ship as the Authority may require.
3. Load line survey
After receipt of the application and the documents and information required by regulation 2 the Assigning Authority shall cause the ship to be surveyed by a Surveyor in order to ascertain— (L.N. 47 of 2018)
the following— (i)for a pre-2005 ship—whether the ship complies with the requirements of regulation 23(3); (ii)for a post-2005 ship—whether the ship complies with the requirements of regulation 23(3B); and (L.N. 47 of 2018)
such other data as may be necessary—
for the assignment of freeboards to the ship in accordance with Part IV; and (L.N. 47 of 2018)
to enable information to be supplied to the master of the ship pursuant to regulations 30 and 31.
In the course of the survey to be carried out pursuant to subregulation (1) the ship and any of her fittings or equipment shall be submitted to such tests as may in the opinion of the Assigning Authority be necessary to ascertain the matters referred to in that subregulation. Tests carried out as to stability are— (L.N. 47 of 2018)
for a pre-2005 ship—the tests referred to in regulation 30; or
for a post-2005 ship—the tests referred to in regulation 30 and Regulation 10 of Annex I. (L.N. 47 of 2018)
The owner of the ship shall afford all necessary facilities for such survey and shall at the request of the Assigning Authority furnish for the Authority’s use and retention if required such further documents or information relating to the ship as the Authority may require.
4. Surveyor’s report
On completion of the survey the Surveyor shall furnish to the Assigning Authority a report giving the results of the survey and his findings in relation to the matters specified in regulation 3.
There shall be appended to the report the record of particulars required for the purposes of section 102(1)(g) of the Ordinance and the requirements of regulation 25 shall apply in respect of that record.
In the case of a ship which is required to comply with the requirements relating to stability as set out in subregulation (4), the Surveyor must furnish to the Assigning Authority information necessary to enable the Authority to determine whether the ship complies with those requirements. (L.N. 47 of 2018)
For the purposes of subregulation (3)—
a ship constructed before 1 July 2010 is required to comply with Schedule 4; and
a ship constructed on or after 1 July 2010 is required to comply with Part A of 2008 IS Code. (L.N. 47 of 2018)
5. Assignment of freeboards
The Assigning Authority must assign freeboards to a ship in accordance with Part IV, if the Authority is satisfied, based on a Surveyor’s report, that—
for a pre-2005 ship—the ship complies with the requirements of regulation 23(3); or
for a post-2005 ship—the ship complies with the requirements of regulation 23(3B). (L.N. 47 of 2018)
On assigning freeboards the Assigning Authority shall furnish to the owner of the ship—
particulars of the freeboards so assigned;
directions specifying—
which of the load lines described in Part II are to be marked on the sides of the ship in accordance with the requirements of that Part; and
the position in which those load lines, the deck-line and the load line mark are to be so marked; and
a copy of the record of particulars relating to conditions of assignment.
5A. Initial, renewal and annual surveys
After receipt of the application and the documents and information required by regulation 2 the Assigning Authority shall cause a Surveyor to carry out on a ship the following surveys— (L.N. 47 of 2018)
an initial survey before the ship is put in service or before an International Load Line Certificate is issued in respect of the ship for the first time. The initial survey shall include a complete inspection of the structure and equipment of the ship to ensure that the structure, equipment, arrangements, materials and scantlings comply with the requirements of these regulations;
a renewal survey at intervals specified by the Director which shall not exceed 5 years for the renewal of an International Load Line Certificate. The renewal survey shall include an inspection of the structure and equipment of the ship to ensure that the structure, equipment, arrangements, materials and scantlings comply with the requirements of these regulations;
an annual survey within 3 months before or after each anniversary date of the International Load Line Certificate. The annual survey shall include a general inspection of the structure and equipment of the ship to ensure that—
alterations have not been made to the hull or superstructures which would affect the calculations determining the position of the load line;
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;
the freeboard marks are correctly and permanently indicated;
the information required by regulations 30 and 31 is supplied.
The fact that the annual survey has been completed shall be endorsed by the Assigning Authority on the International Load Line Certificate issued in respect of the ship under regulation 6 or the International Load Line Exemption Certificate issued in respect of the ship under section 63 of the Ordinance.
If an annual survey is completed before the period specified in subregulation (1)(c) then—
a new date, which shall not be more than 3 months after the date on which the survey was completed, shall be endorsed by the Assigning Authority on the International Load Line Certificate to be the date for ascertaining subsequent anniversary dates;
the subsequent annual survey required under subregulation (1)(c) shall be carried out at the intervals prescribed in that subregulation using the new date in paragraph (a) as the new anniversary date; and
the date of expiry of the Certificate may remain unchanged provided one or more annual surveys are carried out so that the maximum intervals between the surveys prescribed in subregulation (1)(c) are not exceeded.
6. Issue and form of load line certificates
Subject to the provisions of regulation 11 (Exemption and Exemption Certificates) the Assigning Authority shall, on being satisfied that the ship has been surveyed in accordance with regulation 5A(1)(a) or (b) and duly marked in accordance with the directions referred to in regulation 5, issue to the owner of the ship an International Load Line Certificate, in the form set out for such certificate in Annex III; and for that purpose an Assigning Authority other than the Director is hereby authorised by the Director to issue load line certificates in pursuance of section 51(2)(a) of the Ordinance.
7. Duration of International Load Line Certificate
Except as otherwise provided in the following regulations of this Part, an International Load Line Certificate shall be valid for 5 years from the date of issue or for such shorter period as may be specified in the Certificate.
Where a renewal survey is completed within 3 months before the date of expiry of an existing International Load Line Certificate issued in respect of a ship, the new International Load Line Certificate issued in consequence of the survey shall be valid for 5 years from the date of expiry of the existing Certificate or for such shorter period as may be specified in the new Certificate.
Where a renewal survey is completed more than 3 months before the date of expiry of an existing International Load Line Certificate issued in respect of a ship, the new International Load Line Certificate issued in consequence of the survey shall be valid for 5 years from the date of completion of the survey or for such shorter period as may be specified in the new Certificate.
Where a renewal survey is completed after the date of expiry of an existing International Load Line Certificate issued in respect of a ship, the new International Load Line Certificate issued in consequence of the survey shall be valid for 5 years from the date of expiry of the existing Certificate or for such shorter period as may be specified in the new Certificate or, if the Director considers it is appropriate in the special circumstances of the case, for 5 years from the date of completion of the survey, or for such shorter period as may be specified in the new Certificate.
8. Extension of International Load Line Certificate
Where an International Load Line Certificate issued in respect of a ship is valid for a period of less than 5 years, and on the application of the owner, agent or master of the ship, if the Director is satisfied that it is proper to do so, he may grant an extension of the existing Certificate for a period, which together with the period for which the Certificate was issued and any period by which the Certificate has been previously extended under this subregulation, does not exceed 5 years, provided that the annual surveys referred to in regulation 5A(1)(c) are carried out as appropriate.
Where—
a renewal survey of a ship has been completed but a new International Load Line Certificate issued or to be issued under regulation 6 in respect of the ship in consequence of the survey cannot be placed on board the ship before the date of expiry of an existing International Load Line Certificate; and
there is no alterations in the structure, equipment, arrangements, materials or scantlings which affect the ship’s freeboard,
the Assigning Authority may endorse on the existing Certificate the fact that such survey has been completed or cause such Certificate to be so endorsed, and such Certificate so endorsed shall be regarded as valid for such further period not exceeding 5 months from the date of its expiry as may be specified in the Certificate.
If on the date of expiry of an International Load Line Certificate issued in respect of a ship registered in Hong Kong, the ship is not in Hong Kong nor in a port in which it is to be surveyed, the Director may, on the application of the owner, agent or master of the ship, grant an extension of the Certificate—
for the purpose of allowing the ship to complete its voyage to Hong Kong or to that port; and
for a period not exceeding 3 months from the date of expiry of the Certificate.
A ship in respect of which an extension is granted shall not, on its arrival to Hong Kong or to the port in which it is to be surveyed, be entitled by virtue of such extension to leave Hong Kong or that port unless a new International Load Line Certificate has been obtained.
Where a ship in respect of which an International Load Line Certificate has been issued is registered in Hong Kong and engaged on short voyages, and the Certificate has not been extended under this regulation, the Director may, on the application of the owner, agent or master of the ship, grant an extension of the Certificate for a period not exceeding one month from the date of expiry of the Certificate.
Where a renewal survey of a ship in respect of which an extension of the International Load Line Certificate is granted under subregulation (3) or (4) is completed, the new International Load Line Certificate issued in consequence of the survey shall be valid for 5 years from the date of expiry of the existing Certificate before the extension was granted or for such shorter period as may be specified in the Certificate or, if the Director considers it is appropriate in the special circumstances of the case, for 5 years from the date of completion of the renewal survey or for such shorter period as may be specified in the new Certificate.
8A. Duration of International Load Line Exemption Certificate
An International Load Line Exemption Certificate issued by the Director in respect of a ship under section 63 of the Ordinance shall—
be valid for 5 years from the date of issue or for such shorter period as may be specified in the Certificate; and
be limited to the single voyage specified in the Certificate.
9. Cancellation
The Director may cancel a load line certificate—
if satisfied that— (L.N. 47 of 2018)
the ship to which the certificate relates does not comply with the conditions of assignment; or
the structural strength of the ship is lowered to such an extent that the ship is unsafe; or
information on the basis of which freeboards were assigned to the ship was incorrect in a material particular; or (L.N. 35 of 2000)
the fittings and appliances mentioned in regulation 5A(1)(c)(ii) are not maintained in an effective condition; (L.N. 35 of 2000)
if the certificate is not endorsed in accordance with the requirements of regulation 5A(2) to show that the ship has been inspected in accordance with the requirements of regulation 5A(1)(c); (L.N. 35 of 2000)
if a new certificate is issued in respect of the ship;
if the ship was registered in Hong Kong when the certificate was issued and has ceased to be so registered.
In every such case the Director shall notify the owner of the ship in writing of the cancellation specifying the grounds therefor and the date on which it is to take effect.
10. (Repealed L.N. 35 of 2000)
11. Exemption and exemption certificates
Where the Director exempts a ship pursuant to section 62 of the Ordinance the International Load Line Exemption Certificate to be issued to the owner of the ship by the Director as required by section 63 of the Ordinance shall be in the form set out for such certificates in Annex III. (L.N. 47 of 2018)
Except in so far so the nature or terms of any such exemption require the contrary the provisions of regulations 2 to 5A and 7 to 9 shall have effect in the case of any ship so exempted and of any exemption certificate issued in respect of such a ship as they have effect in the case of a ship in respect of which a load line certificate has been issued and of such a certificate, subject to the substitution— (L.N. 35 of 2000)
for references in the said regulations to an Assigning Authority of references to the Director. (E.R. 3 of 2021)
(Repealed L.N. 35 of 2000)
Subregulation (2)(a) does not apply to the endorsements referred to in regulations 5A(2) and (3)(a) and 8(2). (L.N. 47 of 2018)
Part II — Load Lines and Marks
12. Appropriate marks
In this Part the appropriate marks (適當標記) in relation to a ship means the load lines directed to be marked on the ship pursuant to regulation 5(2)(b) and the deck-line and load line mark.
13. Marking
On receipt from the Assigning Authority of the particulars and directions referred to in regulation 5 the owner of the ship shall cause the appropriate marks to be marked on each side of the ship in accordance with the said directions and the requirements of this Part.
14. Deck-line
The deck-line shall consist of a horizontal line 300 millimetres in length and 25 millimetres in width and shall be marked amidships on each side of the ship in accordance with the following provisions of this regulation so as to indicate the position of the freeboard deck.
Subject to subregulation (3), the deck-line shall be marked in such a position on the side of the ship that its upper edge passes through the point amidships where the continuation outwards of the upper surface of the freeboard deck, or of any sheathing of that deck, intersects the outer surface of the shell of the ship as shown in Figure 1.
Where the design of the ship or other circumstances render it in the opinion of the Assigning Authority impracticable to mark the deck-line in accordance with subregulation (2), the Authority may include in the directions given pursuant to regulation 5 a direction that it may be marked by reference to another fixed point in the ship as near as practicable to the position described in subregulation (2).
Figure 1(E.R. 3 of 2021)
Figure 2(E.R. 3 of 2021)
Figure 3(E.R. 3 of 2021)
Figure 4
15. Load line mark
The load line mark shall consist, as shown by Figure 2, of a ring 300 millimetres in outside diameter and 25 millimetres wide, intersected by a horizontal line 450 millimetres long and 25 millimetres wide the upper edge of which passes through the centre of the ring. The centre of the ring shall be marked amidships vertically below the deck-line, so that, except as otherwise provided in regulation 28 (Greater than minimum freeboards), the distance from the centre of the ring to the upper edge of the deck-line is equal to the Summer freeboard assigned to the ship.
16. Load lines
Load lines as described in this regulation and regulation 17 indicate the maximum depth to which a ship marked therewith may be loaded in the circumstances described in Schedule 2 (Appropriate Load Lines—Zones, Areas and Seasonal Periods).
Except as otherwise provided in subregulation (3), regulation 17 and regulation 28 (Greater than minimum freeboards), load lines shall consist as shown in Figure 2 of horizontal lines each 230 millimetres in length and 25 millimetres in width extending forward or abaft of a vertical line 25 millimetres in width marked 540 millimetres forward of the centre of the ring of the load line mark and at right angles to that line, and individual load lines shall be as follows—
the Summer load line, which shall extend forward of the said vertical line and be marked S, and shall correspond horizontally with the line passing through the centre of the ring of the load line mark;
the Winter load line, which shall extend forward of the said vertical line and be marked W;
the Winter North Atlantic load line, which shall extend forward of the said vertical line and be marked WNA;
the Tropical load line, which shall extend forward of the said vertical line and be marked T;
the Fresh Water load line, which shall extend abaft the said vertical line and be marked F;
the Tropical Fresh Water load line, which shall extend abaft the said vertical line and be marked TF.
The maximum depth of loading referred to in subregulation (1) shall be the depth indicated by the upper edge of the appropriate load line.
In the case of a sailing ship—
the Summer load line shall consist of the line passing through the centre of the ring of the load line mark; and
the Winter North Atlantic load line and Fresh Water load line only shall be marked on the ship as shown in Figure 4.
17. Timber load lines
Timber load lines shall consist as shown in Figure 3 of horizontal lines of the dimensions specified in respect of each line in regulation 16, extending abaft or forward of a vertical line of the dimensions specified in respect of such a line in that regulation marked 540 millimetres abaft the centre of the ring of the load line mark and at right angles to that line; and individual Timber load lines shall be as follows—
the Summer Timber load line, which shall extend abaft the said vertical line and be marked LS;
the Winter Timber load line, which shall extend abaft the said vertical line and be marked LW;
the Winter North Atlantic Timber load line, which shall extend abaft the said vertical line and be marked LWNA;
the Tropical Timber load line, which shall extend abaft the said vertical line and be marked LT;
the Fresh Water Timber load line, which shall extend forward of the said vertical line and be marked LF;
the Tropical Fresh Water Timber load line, which shall extend forward of the said vertical line and be marked LTF.
The maximum depth of loading referred to in regulation 16(1) shall be the depth indicated by the upper edge of the appropriate Timber load line.
18. Appropriate load lines
The appropriate load line in respect of a ship at any particular place and time shall be ascertained in accordance with the provisions of Schedule 2.
19. Position of load lines
Each load line required to be marked on a ship shall be marked in such a position on each side of the ship that the distance measured vertically downwards from the upper edge of the deck-line to the upper edge of the load line is equal to the freeboard assigned to the ship which is appropriate to that load line.
20. Method of marking
The appropriate marks shall be marked on each side of a ship in accordance with the requirements of this regulation in such a manner as to be plainly visible.
If the sides of the ship are of metal, the appropriate marks shall be cut in, centre punched or welded; if the sides of the ship are of wood, the marks shall be cut into the planking to a depth of not less than 3 millimetres; if the sides are of other materials to which the foregoing methods of marking cannot effectively be applied, the marks shall be permanently affixed to the sides of the ship by bonding or some other effective method.
The appropriate marks shall be painted in white or yellow if the background is dark, and in black if the background is light.
21. Authorisation of removal, etc., of appropriate marks
After the appropriate marks have been marked on a ship, such marks may not be concealed, removed, altered, defaced or obliterated except under the authority of an Assigning Authority.
22. Mark of Assigning Authority
The mark of the Assigning Authority as described in subregulation (2) may be marked on each side of the ship in a position alongside the load line mark either above the horizontal line forming part of that mark, or above and below it.
An Assigning Authority’s mark for this purpose shall consist of not more than 4 initials to identify the Authority’s name, each measuring approximately 115 millimetres in height and 75 millimetres in width.
Part III — Regulations as to Conditions of Assignment
23. Requirements relevant to the assignment of freeboards
The following requirements in respect of the hulls, superstructures, fittings and appliances of ships are requirements considered by the Director to be relevant to the assignment of freeboards to ships and are prescribed as such for the purposes of section 102(1)(f) of the Ordinance— (L.N. 47 of 2018)
for a pre-2005 ship—the requirements specified in this regulation and in Schedule 4; or
for a post-2005 ship—the requirements specified in Chapter II of Annex I. (L.N. 47 of 2018)
(Repealed L.N. 47 of 2018)
A pre-2005 ship must comply with the following requirements of Schedule 4—
the applicable requirements under Parts II, III and IV (specific requirements); and
the requirements under Part I (basic requirements). (L.N. 47 of 2018)
Despite subregulation (3), if a requirement in relation to a subject matter under the specific requirements is inconsistent with a requirement in relation to the same subject matter under the basic requirements, the ship concerned is only required to comply with the requirement under the specific requirements. (L.N. 47 of 2018)
A post-2005 ship must comply with the following requirements—
the applicable requirements under Regulation 26 of Chapter II and Chapter IV of Annex I (specific requirements); and
Regulations 10 to 25-1 of Annex I (basic requirements). (L.N. 47 of 2018)
Despite subregulation (3B), if a requirement in relation to a subject matter under the specific requirements is inconsistent with a requirement in relation to the same subject matter under the basic requirements, the ship concerned is only required to comply with the requirement under the specific requirements. (L.N. 47 of 2018)
(Repealed L.N. 47 of 2018)
24. Compliance with conditions of assignment
Except as otherwise provided in subregulation (2), a ship shall for the purposes of Part IV of the Ordinance, be taken not to comply with the conditions of assignment—
if at any time after the assignment of freeboards to the ships there has been any alteration of the hull, superstructures, fittings or appliances of the ship such that either—
any requirement applicable to the ship under regulation 23 is not complied with in respect of the ship; or
the record of particulars made in relation to the ship pursuant to regulation 25 is rendered inaccurate in a material respect; or
if that record of particulars is not kept on board the ship in accordance with subregulation (2) of that regulation.
A ship shall be taken to comply with the conditions of assignment notwithstanding an alteration described in subregulation (1)(a) if either—
fresh freeboards appropriate to the condition of the ship after the alteration have been assigned to the ship and the ship has been marked with load lines and a fresh certificate issued to the owner of the ship accordingly; or
the alteration has been inspected by a Surveyor on behalf of the Assigning Authority, that Authority is satisfied that the alteration is not such as to require any change in the freeboards assigned to the ship, and full particulars of the alteration together with the date and place of his inspection have been endorsed by the Surveyor on the record above referred to.
25. Record of particulars
The record required by section 102(1)(g) of the Ordinance of particulars of requirements in respect of the hull, superstructures, fittings and appliances of a ship to which freeboards are assigned shall be in the form set out in Schedule 3 or a form as near thereto as circumstances permit and shall contain the particulars required by that form. (L.N. 47 of 2018)
The record shall be completed by the Surveyor carrying out the survey of the ship pursuant to regulation 3 and shall be furnished by him to the Assigning Authority in accordance with regulation 4. A copy of the record shall be sent by the Assigning Authority to the owner of the ship and it shall be kept on the ship at all times in the custody of the master.
Part IV — Freeboards
26. Types of freeboard
The freeboards assignable to a ship under these regulations are the Summer freeboard, Tropical freeboard, Winter freeboard, Winter North Atlantic freeboard, Fresh Water freeboard, and Tropical Fresh Water freeboard, and in the case of ships to which Timber freeboards are to be assigned the Summer Timber freeboard, Winter Timber freeboard, Winter North Atlantic Timber freeboard, Tropical Timber freeboard, Fresh Water Timber freeboard and Tropical Fresh Water Timber freeboard.
27. Determination of freeboards
Except as otherwise provided in regulation 28—
the freeboards to be assigned to— (L.N. 47 of 2018)
a new ship that is a pre-2005 ship—must be determined in accordance with Schedule 5; and
a new ship that is a post-2005 ship—
if the ship is constructed before 1 July 2014—must be determined in accordance with Regulations 27 to 40, and Regulation 45, of Annex I to the International Convention on Load Lines signed on 5 April 1966, as modified by the Protocol of 1988 relating to it and as amended by IMO resolutions MSC.143(77), MSC.172(79), MSC.223(82), MSC.270(85), MSC.329(90) and MSC.491(104); and (L.N. 101 of 2023)
if the ship is constructed on or after 1 July 2014—must be determined in accordance with Regulations 27 to 40, and Regulation 45, of Annex I. (L.N. 47 of 2018)
the freeboards to be assigned to an existing ship shall be determined in accordance with the provisions applicable in that behalf to the ship under the law in force prior to the coming into operation of these regulations:
Provided that if an existing ship has been so constructed or modified as to comply with all the requirements of Schedule 4 or Annex I applicable to a new ship of her type and application is made for the assignment to her of freeboards determined in accordance with the provisions of Schedule 5 or Annex I, such freeboards shall be assigned to her. (L.N. 47 of 2018)
28. Greater than minimum freeboards
A freeboard determined in accordance with the preceding regulations of this Part is hereafter referred to in this regulation as a minimum freeboard.
The owner of a ship may, when making application under regulation 2 for the assignment of freeboards in respect of the ship, request the assignment of freeboards greater than the minimum freeboards. (L.N. 47 of 2018)
In the circumstances set out in subregulation (2)—
if the Assigning Authority is satisfied that after a survey of the ship under regulation 3, the ship complies with the applicable requirements, the Authority may—
assign to the ship freeboards (other than timber freeboards) greater than the minimum freeboards appropriate to the ship by such amount as the Authority may determine (greater than minimum freeboards); and
furnish to the owner of the ship particulars of the freeboards in accordance with regulation 5; and
if greater than minimum freeboards have been assigned to the ship under paragraph (a)(i), timber freeboards must not be assigned to the ship. (L.N. 47 of 2018)
In any case in which the greater than minimum Summer freeboard assigned to a ship in accordance with the provisions of paragraph 27 is such that the position on the sides of the ship of the load line appropriate to that freeboard would correspond to, or be lower than, the position at which the lowest of the load lines appropriate to minimum freeboards for the ship would be marked—
the following load lines only shall be marked on the sides of the ship, that is to say, those appropriate to the greater than minimum Summer freeboard and Fresh Water freeboard;
the load line appropriate to the greater than minimum Summer freeboard shall be known as the “All Seasons load line” and shall consist of the horizontal line intersecting the load line mark and such mark shall be placed accordingly;
the vertical line described in regulation 16 shall be omitted;
subject to the provisions of paragraph (c), the Fresh Water load line shall be as described in regulation 16(2) and be marked accordingly.
In this regulation—
applicable requirements (適用規定)— (a)in relation to a pre-2005 ship, means the requirements under regulation 23(3); and (b)in relation to a post-2005 ship, means the requirements under regulation 23(3B). (L.N. 47 of 2018)29. Special position of deck-line: correction of freeboards
In any case in which the deck-line is to be marked on the sides of a ship as provided in regulation 14(3), the freeboards to be assigned to the ship shall be corrected to allow for the vertical distance by which the position of the deck-line is altered by virtue of that subregulation. The location of the point by reference to which the deck-line has been so marked and the identity of the deck which has been taken as the freeboard deck shall be specified in the load line certificate issued in respect of the ship.
Part V — General
30. Information as to stability of ships
The owner of any ship to which freeboards are assigned under these regulations shall provide for the guidance of the master of the ship information relating to the stability of the ship in accordance with the following provisions of this regulation.
The information must include particulars appropriate to the ship in respect of all matters specified in Schedule 7. (L.N. 47 of 2018)
Subject to subregulation (4), the information shall, when first supplied, be based on the determination of stability by means of an inclining test which must be carried out in the presence of a Surveyor. The information first supplied shall be replaced by fresh information whenever its accuracy is materially affected by alteration of the ship. Such fresh information shall if the Assigning Authority so require be based on a further inclining test. (L.N. 47 of 2018)
The Director may—
in the case of any ship allow the information to be based on the determination, by means of an inclining test, of the stability of a sister ship;
in the case of a ship specially designed for the carriage of liquids or ore in bulk, or of any class of such ships, dispense with an inclining test if satisfied from the information available in respect of similar ships that the ship’s proportions and arrangements are such as to ensure more than sufficient stability in all probable loading conditions; and (L.N. 47 of 2018)
in the case where the Director decides that the performance of an inclining test on a ship is not practicable or safe, or yields inaccurate results, due to the specific proportions, arrangements, strength or hull form of the ship, allow the information to be based on its lightship characteristics that are—
determined by a detailed weight estimate; and
confirmed by a lightweight survey carried out in the presence of a Surveyor. (L.N. 47 of 2018)
The information, and any fresh information to replace the same pursuant to subregulation (3), shall before issue to the master—
if it relates to a ship which is—
an oil tanker over 100 metres in length;
a bulk carrier, or an ore carrier, over 150 metres in length;
a single deck bulk carrier over 100 metres but not exceeding 150 metres in length;
a single deck dry cargo ship over 100 metres in length; or
a purpose built container ship over 125 metres in length;
be submitted in duplicate by or on behalf of the owner of the ship to the Assigning Authority which assigned freeboards to the ship for approval; or
if it relates to any other ship, be submitted in duplicate by or on behalf of the owner of the ship to the Assigning Authority which assigned freeboards to the ship for approval.
The information shall incorporate such additions and amendments as the Assigning Authority to which it is submitted may in any particular case specify for the purpose of ensuring that the information complies with the provisions of this regulation. (L.N. 47 of 2018)
No provision.
Information provided pursuant to the foregoing provisions of this regulation shall be furnished by the owner of the ship to the master in the form of a book which shall be kept on the ship at all times in the custody of the master.
31. Information as to loading and ballasting of ships
The owner of any ship to which freeboards are assigned under these regulations, being a ship of more than 150 metres in length specially designed for the carriage of liquids or ore in bulk, shall provide for the information of the master information relating to the loading and ballasting of the ship in accordance with the following provisions of this regulation.
Such information shall consist of working instructions specifying in detail the manner in which the ship is to be loaded and ballasted so as to avoid the creation of unacceptable stresses in her structure and shall indicate the maximum stresses permissible for the ship.
The provisions of regulation 30(5) shall have effect in respect of information required under this regulation, and the information duly approved in accordance with that subregulation shall be contained in the book to be furnished to the master of the ship pursuant to subregulation (7) of that regulation, so however that the information to be provided pursuant to each regulation is separately shown in the book under separate headings specifying the number and heading of each regulation.
32. Recognition of certificates issued by other Governments
The circumstances in which certificates which are issued as International Load Line Certificates in respect of Convention ships by governments other than the Hong Kong Government shall be recognised for the purposes of the Ordinance are as follows—
the certificate shows by its terms that it was issued in respect of the ship by a government, being either—
the government of the Convention country in which the ship is registered or, if the ship is not registered in any country or elsewhere, the government of the Convention country whose flag she flies; or
the government of any other Convention country stated in the certificate to have issued the certificate at the request of a country specified in subparagraph (i),
or by a person or organisation under the authority of such a government;
the certificate is in the official language or languages of the issuing country and, if the language used is neither English nor French, includes in its text a translation into one of those languages;
the certificate is in the form set out in Annex III for an International Load Line Certificate and contains all the particulars required by such form;
the certificate shows that it is currently in force and applicable to the voyage in respect of which clearance or transire is required;
the period for which the certificate is expressed to be valid does not exceed 5 years from the date of issue;
any extension of the period for which the certificate is expressed to be valid is duly endorsed on the certificate by the issuing authority and does not exceed 5 months;
annual surveys of the ship to which the certificate relates, being surveys required by Article 14(1)(c) of the Convention of 1966, are shown duly endorsed on the certificate by the issuing authority;
the ship to which the certificate relates—
if registered in a Convention country when the certificate was issued, remains registered in that country, or
if not so registered when the certificate was issued, either has since been registered in the Convention country by or on behalf of the government of which the certificate was issued and remains so registered, or flies the flag of that Convention country.
The circumstances in which exemption certificates which, in accordance with the Convention of 1966, are issued in respect of Convention ships by governments other than the Hong Kong Government shall have the like effect for the purposes of Part IV of the Ordinance as if they were valid Convention certificates are those specified in paragraphs (a) to (h) of subregulation (2) subject to the substitution for the reference in paragraph (c) to an International Load Line Certificate of reference to an International Load Line Exemption Certificate.
33. Equivalents
If these regulations require that a particular fitting, material, appliance or apparatus is to be fitted to a ship, or that any particular provision is to be made in a ship, the Director may allow any other fitting, material, appliance or apparatus to be fitted to the ship, or any other provision to be made in the ship, if the Director is satisfied that such other fitting, material, appliance, apparatus or provision is at least as effective as that required under these regulations.
Schedule 1
(Repealed L.N. 47 of 2018)
Schedule 2 — Appropriate Load Lines—Zones, Areas and Seasonal Periods
[regs. 16 to 18]Part I — Appropriate Load Lines
1.
Subject to paragraphs 3 to 6 of this Part, the load line appropriate to a ship shall be—
the Summer load line when the ship is in a summer zone (excluding any part of such a zone which is to be regarded as a seasonal area in relation to the ship);
the Tropical load line when the ship is in the tropical zone;
when the ship is in a seasonal zone or area (including any part of a summer zone which is to be regarded as a seasonal area in relation to the ship) the Summer load line, the Winter load line or the Tropical load line according to whether the seasonal period applicable in that zone or area to that ship is respectively summer, winter or tropical.
2.
The zones,
the seasonal zones, seasonal areas and periods applicable to a ship,
shall be those set out in Part II of this Schedule.
3.
In the case of a ship of 100 meters or less in length, the appropriate load line shall be the Winter North Atlantic load line in—
the North Atlantic Winter Seasonal Zone I as described in Regulation 46 of Annex II to the Convention of 1966; (L.N. 47 of 2018)
so much of North Atlantic Winter Seasonal Zone II, as so described, as lies between the meridians of longitudes of 15°W and 50°W,
during the winter seasonal periods respectively applicable in those zones.
4.
In the case of a sailing ship the appropriate load line shall, except in circumstances in which paragraph 3 applies, be the Summer load line.
5.
In the case of a ship marked with an All Seasons load line in accordance with regulation 28 that load line shall be the appropriate load line in all circumstances.
6.
In the case of a ship marked with Timber load lines and carrying timber deck cargo in accordance with the requirements of the deck cargo regulations, the load line to be observed in any particular circumstances shall be the Timber load line corresponding to the load line which would be applicable in those circumstances under paragraphs 1 to 5 of this Schedule if the ship were not so marked.
_
Part II — Zones, Areas and Seasonal Periods
The zones, areas and seasonal periods applicable to a ship are set out in Regulations 46 to 52 of Annex II to the Convention of 1966.
(Part II replaced L.N. 47 of 2018)
_
Part III — Ports on Boundary Lines
For the purposes of the application of this Schedule to a ship at a port which stands on the boundary line between 2 zones or areas or between a zone and an area, or is required under Annex II to the Convention of 1966 to be considered as being on such a boundary line, the port is regarded as within the zone or area as determined in accordance with Article 11 of, and Annex II to, the Convention of 1966.
(Part III added L.N. 47 of 2018)
Schedule 3 — Record of Particulars
[reg. 25]The following is the form of record of particulars referred to in regulation 25—
Merchant Shipping (Safety) (Load Line) Regulations
Record of Particulars Relating toConditions of Assignment
In this record, references to Regulations are references to the Regulations in Annex I. (L.N. 47 of 2018)
Name of ship
Port of registry
Nationality
Distinctive number of letters
Shipbuilders
Yard number
Date of build/conversion
Freeboards assigned as a ship of Type
Classification
Date and place of initial survey
| A plan of suitable size may be attached to this Report in preference to the sketches on this pageDisposition and dimensions of superstructures, trunks, deckhouses, machinery casings; extent of bulwarks, guard rails and wood sheathing on exposed deck, to be inserted in the diagrams and tables following; together with positions of hatchways, gangways, and other means for the protection of the crew; cargo ports, bow and stern doors, side scuttles, scuppers, ventilators, air pipes, companionways, and other items that would affect the seaworthiness of the ship. |
| Doorways in Superstructures, Exposed Machinery Casings and Deckhouses Protecting Opening in Freeboard and Superstructure Decks(Regulations 12, 17 and 18) | |||||
| Location | Ref. No. on Sketch or Plan | Number and Size of Openings | Height of Sills | Closing Appliances | |
| Type and Material | Number of Clips | ||||
| In forecastle bulkhead | |||||
| In bridge forward bulkhead | |||||
| In bridge after bulkhead | |||||
| In raised quarter deck bulkhead | |||||
| In poop bulkhead | |||||
| In exposed machinery casings on freeboard or raised quarter decks | |||||
| Doorways in Superstructures, Exposed Machinery Casings and Deckhouses Protecting Opening in Freeboard and Superstructure Decks(continued) | |||||
| Location | Ref. No. on Sketch or Plan | Number and Size of Openings | Height of Sills | Closing Appliances | |
| Type and Material | Number of Clips | ||||
| In exposed machinery casings on superstructure decks | |||||
| In machinery casings within superstructures or deckhouses on freeboard deck | |||||
| In deckhouses in Position 1 enclosing openings leading below freeboard deck | |||||
| In deckhouses in Position 2 enclosing openings leading within enclosed superstructures or below freeboard deck | |||||
In exposed pump room casings | |||||
| Hatchways at Positions 1 and 2 Closed by Portable Covers and Secured Weathertight by Tarpaulins and Battening Devices (Regulation 15) | |||||||
| Position and Reference No. on Sketch or Plan | |||||||
| Dimensions of clear opening at top of coaming | |||||||
| Height of coamings above deck | |||||||
| PORTABLE BEAMS | Number | ||||||
| Spacing | |||||||
| b1 tf | |||||||
| D tw | |||||||
| b2 tf | |||||||
| Bearing surface | |||||||
| Means of securing each beam | |||||||
| Material | |||||||
| PORTABLE COVERS | Thickness | ||||||
| Direction fitted | |||||||
| Bearing surface | |||||||
| Spacing of Cleats | |||||||
| TARPAULINS | No. of layers | ||||||
| Material | |||||||
| Means of securing each section of covers: | |||||||
| Are wood covers fitted with galvanized end bands? | |||||||
| Hatchways at Positions 1 and 2 Closed by Weathertight Covers of Steel (or Other Equivalent Material) Fitted with Gaskets and Clamping Devices (Regulation 16) | ||||||
| Position and Reference No. on Sketch or Plan | ||||||
| Dimensions of clear opening at top of coaming | ||||||
| Height of coaming above deck | ||||||
| Type of cover or Patent Name | ||||||
| Material | ||||||
| Position and Reference No. on Sketch or Plan | ||||||
| Dimensions of clear opening at top of coaming | ||||||
| Height of coaming above deck | ||||||
| Type of cover or Patent Name | ||||||
| Material | ||||||
| Machinery Space Openings and Miscellaneous Openings in Freeboard and Superstructure Decks (Regulations 17 and 18) | ||||||||
| Position and Reference No. on Sketch or Plan | ||||||||
| Dimensions | ||||||||
| Height of coaming | ||||||||
| COVER | { | Material | ||||||
| How attached | ||||||||
| Number and Spacing of Toggles | ||||||||
| Position and Reference No. on Sketch or Plan | ||||||||
| Dimensions | ||||||||
| Height of coaming | ||||||||
| COVER | { | Material | ||||||
| How attached | ||||||||
| Number and Spacing of Toggles | ||||||||
| Particulars of spurling pipe closing arrangements (Regulation 22-2): | ||||||||
| (L.N. 47 of 2018) | ||||||||
| Ventilators on Freeboard and Superstructure Decks (Positions 1 and 2) (Regulation 19) | |||||
| Deck on which fitted | Number fitted | Coaming | Type (State Patent Name if any) | Closing Appliances | |
| Dimensions | Height | ||||
| Air Pipes on Freeboard and Superstructure Decks (Regulation 20) | |||||
| Deck on which fitted | Number fitted | Coaming | Type (State Patent Name if any) | Closing Appliances | |
| Dimensions | Height | ||||
| Cargo Ports and Other Similar Openings (Regulation 21) | ||||
| Position of port | Dimensions of opening | Distance of lower edge from freeboard deck | Securing devices | Remarks |
| Scuppers, Inlets and Discharges (Regulation 22) | ||||||||||
| State if Scupper or Discharge | Number | Pipe | From | Vertical distance above top of keel | Number, Type and Material of Discharge Valves | Position of Controls | ||||
| Discharge | Uppermost Valve | |||||||||
| Diameter | Thickness | Material | Outlet in hull | Inboard end | ||||||
| NOTE: In Ro-ro ships, indicate how ready accessibility to scupper valves is ensured when vehicle space is filled | ||||||||||
| S—Scupper D—Discharge | MS—Mild Steel CS—Cast Steel GM—Gun Metal | SD—Screw down ANR—Automatic non-return SD ANR—Screw down automatic non-return | ||||||||
| Any other approved material to be designated | ||||||||||
| Side Scuttles (Regulation 23) | |||||||
| Position | Number fitted | Clear Glass size | Fixed or opening | Material | Type of Glass and Thickness | Standards used and Type No. | |
| Frame | Deadlight | ||||||
| Indicate the vertical distance between the freeboard deck and the lower sill of the side scuttle positioned at the greatest vertical distance below the freeboard deck. | |||||||
| Freeing Ports (Regulation 24) | ||||||
| Length of Bulwark | Height of Bulwark | Number and Size of Freeing Ports each side | Total Area each side | Required Area each side | ||
| Freeboard Deck After Well | ||||||
| Forward Well | ||||||
| Superstructure Deck | ||||||
| State fore and aft position of each freeing port in relation to superstructure end bulkheads | { | After Well | ||||
| Forward Well | ||||||
| Particulars of shutters, bars or rails fitted to freeing ports. | ||||||
| Height of lower edge of freeing port above deck. | ||||||
| Protection of the Crew (Regulations 25 and 26) |
| State particulars of bulwarks or guardrails on freeboard and superstructure decks: State details of lifelines, walkways, gangways or underdeck passageways where required to be fitted: |
| Timber Deck Cargo Fittings (Regulation 44)State particulars of uprights, sockets, lashings, guardrails and lifelines: |
| Other Special Features |
| Initial Survey | |||||||||||||||||||
| The conditions of assignment shown on this form are a record of the arrangements and fittings provided on the ship and are in accordance with the requirements of the relevant Regulations in Annex I and of these regulations. (L.N. 35 of 2000; L.N. 47 of 2018) | |||||||||||||||||||
| (Surveyor’s Signature) | |||||||||||||||||||
| (Date) | |||||||||||||||||||
| Subsequent Renewal Surveys (L.N. 35 of 2000) | |||||||||||||||||||
| I have completed the renewal survey and am satisfied that the fittings and appliances are in accordance with the particulars shown in this record and are in good condition and that approved stability information and, where applicable, information relating to loading and ballasting of the ship is on board. (L.N. 35 of 2000) | |||||||||||||||||||
| Signature | Port of Survey | Date of Survey | |||||||||||||||||
Schedule 4 — Conditions of Assignment for Pre-2005 Ships
[reg. 23]1. Interpretation
In this Schedule, except where the context otherwise require—
breadth (寬度) and the symbol (B) in relation to a ship mean the maximum breadth of the ship measured amidships to the moulded line of the frame in the case of a ship having a metal shell, or to the outer surface of the hull in the case of a ship having a shell of any other material; enclosed superstructure (圍封上層建築) means a superstructure— (a)which has enclosing bulkheads of efficient construction in which all access openings are fitted with sills and weathertight doors; and (b)in which all other openings in sides or ends thereof are fitted with efficient weathertight means of closing, but shall not include a bridge or poop fulfilling these requirements unless access is provided by which the crew can reach machinery and other working spaces within the bridge or poop by alterative means which are available for the purpose at all times when access openings in the bulkheads of the bridge or poop are closed; exposed position (外露位置) means a position which is either— (a)exposed to weather and sea, or (b)within a structure so exposed other than an enclosed superstructure; forward perpendicular (首垂線) means the perpendicular taken at the forward end of the ship’s length (L), coinciding with the foreside of the waterline on which such length is measured; and after perpendicular (後垂線) means the perpendicular taken at the after end of such length; height (高度) in relation to a superstructure means the least vertical height measured at side from the top of the superstructure deck beams to the top of the freeboard deck beams, and the standard height (標準高度) of a superstructure means the height ascertained in accordance with the provisions of paragraph 9 of Schedule 5; Summer load waterline (夏季載重水線) in relation to a ship means the waterline which corresponds, or will when load lines have been marked on the sides of the ship correspond, to the Summer load line of the ship; superstructure (上層建築) means a deck structure (including a raised quarter deck) situated on the freeboard deck which either extends from side to side of the ship or is such that its side plating is not inboard of the shell plating of the ship by more than 4 per cent of the breadth (B) of the ship; and, where the freeboard deck of the ship consists of a lower deck as described in paragraph (a)(ii) of the definition of freeboard deck in regulation 1A, includes that part of the hull of the ship which extends above the freeboard deck; (L.N. 47 of 2018) superstructure deck (上層建築甲板) means a deck forming the top of a superstructure; Type “A” ship (“A”型船舶) means a ship which is designed to carry only liquid cargoes in bulk and has the characteristics set out below— (a)the cargo tanks of the ship have only small access openings closed by watertight gasketed covers of steel; (b)the ship in consequence of its design has high integrity of the exposed deck and has a high degree of safety against flood in consequence of the low permeability of loaded cargo spaces and the degree of subdivision therein; (c)if over 150 metres in length and designed to have empty compartments when loaded to the Summer load waterline, the ship shall be capable of remaining afloat after the flooding of any one of such empty compartments, at an assumed permeability of 0.95 in the condition of equilibrium described in paragraph (d):Provided that if the ship exceeds 225 metres in length its machinery space shall also be treated as one of the floodable compartments above mentioned but with an assumed permeability of 0.85; (d)the condition of equilibrium referred to in paragraph (c) is as follows— (E.R. 3 of 2021)(i)the final water line after the flooding specified in that paragraph is below the top of any ventilator coaming, the lower edge of any air pipe opening, the upper edge of the sill of any access opening fitted with a weathertight door, and the lower edge of any other opening through which progressive flooding may take place;(ii)the angle of heel due to unsymmetrical flooding does not exceed 15 degrees;(iii)the metacentric height calculated using the constant displacement method has a positive value of at least 50 millimetres in the upright condition after the flooding specified in that paragraph; and(iv)the ship has adequate residual stability; (E.R. 3 of 2021) Type “B” ship (“B”型船舶) means either— (a)a new ship other than a Type “A” ship; or (b)an existing ship which, being so constructed or modified as to comply with all the requirements of this Schedule applicable to a new ship of her type, is to be assigned freeboards determined in accordance with Schedule 5; weathertight (風雨密) in relation to any part of a ship other than a door in a bulkhead means that the part is such that water will not penetrate it and so enter the hull of the ship in the worst sea and weather conditions likely to be encountered by the ship in service; and in relation to a door in a bulkhead means a door which— (a)is constructed of steel or other equivalent material, is permanently and strongly attached to the bulkhead, and is framed, stiffened and fitted so that the whole structure in which it is set is of equivalent strength to the unpierced bulkhead; (b)is closed by means of gaskets, clamping devices or other equivalent means permanently attached to the bulkhead or to the door itself; (c)when closed, is weathertight as above defined; and (d)is so arranged that it can be operated from either side of the bulkhead.| References to any structure, opening or fitting as being in Position 1 or Position 2 shall be construed as references to its being in the following positions respectively— | ||
| Position 1 : | in an exposed position on either (a) the freeboard deck or a raised quarter deck or (b) a superstructure deck and forward of a point one quarter of the ship’s length (L) from the forward perpendicular; | |
| Position 2 : | in an exposed position on a superstructure deck and abaft the said point. | |
Part I — Ships in General
2. Structural strength and stability
The construction of the ship shall be such that her general structural strength will be sufficient for the freeboards to be assigned to her.
The design and construction of the ship shall be such as to ensure that her stability in all probable loading conditions will be sufficient for the freeboards to be assigned to her, and for this purpose regard shall be had, in addition to the intended service of the ship and to any relevant requirements of regulations made under the Ordinance—
The area under the curve of Righting Levers (GZ curve) shall not be less than—
0.055 metre-radians up to an angle of 30 degrees;
0.09 metre-radians up to an angle of either 40 degrees or the angle at which the lower edges of any openings in the hull, superstructures or deckhouses, being openings which cannot be closed weathertight, are immersed if that angle be less;
0.03 metre-radians between the angles of heel of 30 degrees and 40 degrees or such lesser angle as is referred to in sub-sub-subparagraph (ii). (E.R. 3 of 2021)
The Righting Lever (GZ) shall be at least 0.20 metres at an angle of heel equal to or greater than 30 degrees.
The maximum Righting Lever (GZ) shall occur at an angle of heel not less than 30 degrees.
The initial transverse metacentric height shall not be less than 0.15 metres. In the case of a ship carrying a timber deck cargo which complies with sub-subparagraph (a) by taking into account the volume of timber deck cargo the initial transverse metacentric height shall not less than 0.05 metres.
(Repealed L.N. 47 of 2018)
3. Superstructure end bulkhead
Bulkheads at exposed ends of enclosed superstructures shall be of efficient construction. The height of any sill in an access opening in such a bulkhead shall except where otherwise stated be at least 380 millimetres above the deck.
4. Hatchways: general
The provisions of this paragraph and of paragraphs 5 and 6 apply to all hatchways in Position 1 or Position 2 except where otherwise stated.
Subject to subparagraph (3), the construction and the means for securing the weathertightness of a hatchway shall—
in the case of a hatchway closed by a portable cover and secured weathertight by tarpaulins and battening devices, comply with the requirements of paragraph 5; and
in the case of a hatchway closed by a weathertight cover of steel or other equivalent material fitted with gaskets and clamping devices, comply with the requirements of paragraph 6.
Every hatchway in an exposed position on a deck above a superstructure deck and leading to space below that superstructure deck shall be of such construction and be fitted with such means for securing the weathertightness of the hatchway as are adequate having regard to its position.
5. Hatchways closed by portable covers and secured weathertight by tarpaulins and battening devices
Coamings: Every hatchway shall have a coaming of substantial construction. The coaming shall be constructed of mild steel but may be constructed of other material provided that the strength and stiffness of the coaming are equivalent to those of a coaming of mild steel. The height of the coaming above the deck shall be at least—
600 millimetres if the hatchway is in Position 1;
450 millimetres if the hatchway is in Position 2.
Covers:
The width of every bearing surface for a hatchway cover shall be at least 65 millimetres.
In the case of a cover made of wood—
the finished thickness of the cover shall be at least 60 millimetres in association with a span of not more than 1.5 metres, and the thickness of covers for larger spans shall be increased in the ratio of 60 millimetres to a span of 1.5 metres;
the ends of the cover shall be protected by galvanised steel bands efficiently secured.
In the case of a cover made of mild steel—
the strength of the cover shall be calculated with an assumed load ascertained in accordance with the following Table, and the product of the maximum stress thus calculated and the factor 4.25 shall not exceed the minimum ultimate strength of the material—
| Table | |||||
| Ship’s Length (L) | Assumed Load, per square metre | ||||
| Hatchway in Position 1 | Hatchway in Position 2 | ||||
| 24 metres | 1 metric ton | 0.75 metric ton | |||
| 100 metres or over | 1.75 metric tons | 1.30 metric tons | |||
| Over 24 metres but less than 100 metres | to be ascertained by linear interpolation | ||||
the cover shall be so designed as to limit the deflection to not more than 0.0028 times the span under the load appropriate to the hatchway cover under sub-sub-subparagraph (i).
In the case of a cover made neither of mild steel nor wood the strength and stiffness of the cover shall be equivalent to those of a cover of mild steel.
Portable beams:
Where portable beams for supporting hatchway covers are made of mild steel, the strength of such beams shall be calculated with the appropriate assumed load ascertained in accordance with the Table in subparagraph (2) and the product of the maximum stress thus calculated and the factor 5 shall not exceed the minimum ultimate strength of the material.
Such beams shall be so designed as to limit the deflection to not more than 0.0022 times the span under the load appropriate to the beam under sub-subparagraph (a).
In the case of portable beams not made of mild steel, the strength and stiffness of the beams shall be equivalent to those of beams of mild steel.
Pontoon covers:
Where pontoon covers of mild steel are used in place of portable beams and covers their strength shall be calculated with the appropriate assumed load ascertained in accordance with the Table in subparagraph (2) and the product of the maximum stress thus calculated and the factor 5 shall not exceed the minimum ultimate strength of the material.
Such pontoon covers shall be so designed as to limit the deflection to not more than 0.0022 times the span under the load appropriate to a pontoon cover under sub-subparagraph (a).
Mild steel plating forming the tops of such covers shall be not less in thickness than 1 per cent of the spacing of the stiffeners or 6 millimetres, whichever is the greater.
In the case of pontoon covers not made of mild steel, the strength and stiffness of the cover shall be equivalent to those of a cover of mild steel.
Carriers or sockets: Carriers or sockets for portable beams shall be of substantial construction, and shall provide efficient means for the 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: 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 end cleats along each side or end of the hatchway shall be not more than 150 millimetres from the hatch corners.
Battens and wedges: Battens and wedges shall be efficient for their purpose and in good condition. Wedges shall be of tough wood or equivalent material cut to a taper of not more than 1 in 6 and shall be not less than 13 millimetres thick at the toes.
Tarpaulins: At least two layers of tarpaulins shall be provided for every hatchway. Such tarpaulins shall be waterproof, in good condition, and of material of satisfactory strength and quality.
Security of hatchway covers:
Except as otherwise provided in sub-subparagraph (b), steel bars shall be provided for every hatchway sufficient to ensure that each section of hatchway covers can be efficiently and independently secured after the tarpaulins have been battened down and that hatchway covers more than 1.5 metres in length are so secured by at least 2 such bars.
Bars of material other than steel, or means of securing hatchway covers otherwise than by bars, may be so used, provided:
that in the case of the former, the strength and stiffness of the bars used are equivalent to those of steel bars;
that in either case the degree of security so achieved is not less than that which would be achieved by the use of steel bars.
6. Hatchways closed by weathertight covers of steel or equivalent material fitted with gaskets and clamping devices
Coamings:
Except as otherwise provided in sub-subparagraph (b), every hatchway shall have a coaming of substantial construction the height of which above the deck shall be at least—
600 millimetres if the hatchway is in Position 1;
450 millimetres if the hatchway is in Position 2.
A hatchway may have a coaming of less than the height applicable under the provisions of sub-subparagraph (a), or in exceptional circumstances a coaming may be dispensed with, provided:
that the safety of the ship will not be impaired in consequence in the worst sea and weather conditions likely to be encountered by the ship in service; and
that any coaming fitted pursuant to this sub-subparagraph is of substantial construction.
Weathertight covers:
The strength of every cover of mild steel shall be calculated with an assumed load ascertained in accordance with the Table set out in paragraph 5(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. Every such cover shall be so designed as to limit the deflection under such a load to not more than 0.0028 times the span.
Every cover constructed of material other than mild steel shall have strength and stiffness equivalent to those required in the case of a cover of mild steel.
Every cover shall be fitted with efficient means by which it can be secured and made weathertight.
Mild steel plating forming the top of any cover shall be not less in thickness than one per cent, of the spacing of the stiffeners or 6 millimetres whichever is the greater.
7. Machinery space openings
Every machinery space opening situated in Position 1 or Position 2 shall be efficiently framed and enclosed by a steel casing of substantial strength, account being taken of the extent, if any, to which the casing is protected by other structures.
Every doorway in a casing referred to in subparagraph (1) shall be fitted with a steel weathertight door having a sill the height of which shall be at least—
600 millimetres above the deck if the opening is in Position 1;
380 millimetres above the deck if the opening is in Position 2.
Every opening in such a casing other than a doorway shall be fitted with a permanently attached cover of steel, which is fitted with efficient means by which it can be secured and maintained weathertight and, except in the case of a cover consisting of a plate secured by bolts, is capable of being operated from either side of the opening.
Every fiddley, funnel or machinery space ventilator situated in an exposed position on the freeboard deck or on a superstructure deck shall have a coaming of such height above the deck as will provide adequate protection having regard to its position.
8. Miscellaneous openings in freeboard and superstructure decks
Every manhole and flush scuttle in Position 1 or Position 2 shall be provided with a substantial cover fitted with efficient means by which it can be secured and maintained watertight. Unless secured by closely spaced bolts, every such cover shall be permanently attached by a chain or equivalent means so as to be available for immediate use at all times.
Every opening in a deck other than a hatchway, machinery space opening, manhole or flush scuttle shall—
if situated in the freeboard deck be protected either by an enclosed superstructure or by a deckhouse or companionway equivalent in strength and weathertightness to an enclosed superstructure;
if situated in an exposed position either—
in a deck over an enclosed superstructure and giving access to space within that superstructure; or
on top of a deckhouse on the freeboard deck and giving access to space below that deck,
be protected by an efficient deckhouse or companionway fitted with weathertight doors;
if situated in an exposed position in a deck above the deck over an enclosed superstructure and giving access to space within that superstructure, be protected either in accordance with the requirements of sub-subparagraph (b) or to such lesser extent as may be adequate having regard to its position.
Every door in a companionway, deckhouse or enclosed superstructure referred to in subparagraph (2)(a) or (b) shall have a sill the height of which shall be at least—
600 millimetres if the structure is in Position 1;
380 millimetres if the structure is in Position 2.
9. Ventilators
Except as otherwise provided in sub-subparagraph (b), every ventilator in Position 1 or Position 2 leading to space below the freeboard deck or below the deck of an enclosed superstructure shall have a coaming of steel or equivalent material, substantially constructed and efficiently connected to the deck. The height of such coamings shall be at least—
900 millimetres above the deck if the ventilator is in Position 1;
760 millimetres above the deck if the ventilator is in Position 2.
Where the coaming for any ventilator referred to in sub-subparagraph (a) is situated in a position in which it will be particularly subjected to weather and sea the height of the coaming shall exceed the relevant minimum height above specified by such amount as necessary to provide adequate protection having regard to its position.
If the coaming of any ventilator referred to in subparagraph (1) exceeds 900 millimetres in height above the deck it shall be efficiently supported by stays, brackets or other means.
Every ventilator in Position 1 or Position 2 which passes through a superstructure other than an enclosed superstructure shall have a coaming of steel or equivalent material at the freeboard deck, substantially constructed and efficiently connected to that deck and at least 900 millimetres in height above that deck.
Subject to subparagraph (5), every ventilator opening in Position 1 or Position 2 shall be provided with an efficient appliance by which it can be closed and secured weathertight. Every such closing appliance so provided on board a ship of not more than 100 metres in length shall be permanently attached to, and in the case of any other ship shall either be so attached or be conveniently stowed near to, the ventilator for which it is provided.
A ventilator in Position 1 the coaming of which exceeds 4.5 metres in height above the deck, and a ventilator in Position 2 the coaming of which exceeds 2.3 metres in height above the deck, need not be fitted with a closing appliance unless either—
it serves the machinery spaces or a cargo compartment, or
the fitting of such an appliance is necessary in the circumstances in order to provide adequate protection.
A ventilator in Position 1 or Position 2 leading to space in a battery room shall not be fitted with a closing appliance.
10. Air pipes
The exposed parts of any air pipe leading to a ballast or other tank and extending above the freeboard deck or a superstructure deck shall be of substantial construction.
The exposed opening of any such air pipe shall be fitted with efficient means of closing the opening weathertight, which shall be permanently attached in a position ready for immediate use.
Subject to subparagraph (4), the height above deck of the exposed opening of any such airpipe shall be—
at least 760 millimetres if that deck is the freeboard deck;
if that deck is a superstructure deck, at least 450 millimetres or, if the superstructure is of less than standard height, such greater height as is necessary to provide adequate protection having regard to the lower height of the superstructure.
The height described in subparagraph (3) may in any particular case be lower than the minimum specified in relation thereto in that subparagraph if—
the working of the ship would be unreasonably interfered with if such minimum heights were adhered to; and
the closing arrangements are such as to ensure that such lower height is adequate in the circumstances.
11. Cargo ports and similar openings
Cargo ports and similar openings in the ship’s side below the freeboard deck or in the sides or ends of superstructures which form part of the shell of the ship shall be compatible with the design of the ship and shall not exceed in number those necessary for the proper working of the ship.
Every such cargo port and opening shall be provided with a door or doors so fitted and designed as to ensure watertightness and structural integrity commensurate with the surrounding shell plating.
No such cargo port or opening below the freeboard deck shall, unless the Director otherwise consents, be so situated that when load lines have been marked on the ship’s side the lower edge of the port or opening will be below a line drawn parallel to the freeboard deck at side having as its lowest point the upper edge of the uppermost load line.
12. Scuppers, inlets and discharges
Every discharge led through the shell of a ship either—
from spaces below the freeboard deck, or
from within any enclosed superstructure, or from within any deckhouse on the freeboard deck which is fitted with weathertight doors,
shall be fitted in accordance with subparagraphs (2) and (3) with efficient means for preventing water from passing inboard.
Subject to subparagraph (3), such means shall consist of a single automatic non-return valve fitted at the shell of the ship and having positive means of closure from a position or positions above the freeboard deck. Such positions shall be readily accessible at all times under service conditions and shall be provided with an indicator showing whether the valve is open or closed.
If when load lines are marked on the ship’s side the vertical distance from the Summer load waterline to the inboard end of a discharge pipe will exceed 0.01(L), such means may consist of 2 automatic non-return valves having no positive means of closure, one of which shall be situated as close to the ship’s shell as practicable and be substantially connected thereto and the inboard one of which is so situated that it will at all times under service conditions be readily accessible for examination.
Where the vertical distance referred to in sub-subparagraph (a) will exceed 0.02(L) such means may consist, if in the circumstances the following would be equally effective, of a single automatic non-return valve having no positive means of closure, situated as close to the ship’s shell as practicable and substantially connected thereto.
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° either way. In other cases the drainage shall be led inboard in accordance with the requirements of the Convention in force. (L.N. 35 of 2000)
The controls of any valve situated in a manned machinery space, and serving a main or auxiliary sea inlet or discharge or bilge injection system shall be so sited as to be readily accessible at all times under service conditions. Valves referred to in this and the following subparagraph shall be equipped with an indicator showing whether the valve is open or closed.
The controls of any valve situated in an unattended machinery space and serving a sea inlet or discharge or bilge injection system shall be so sited as to be readily accessible at all times under service conditions, particular attention being paid in this regard to possible delay in reaching or operating the controls. In addition, the machinery space in which the valve is situated shall be equipped with an efficient warning device to give warning at suitable control positions of any entry of water into the machinery space other than water resulting from the normal operation of the machinery.
Every scupper and discharge pipe originating at any level and penetrating the shell of the ship either—
more than 450 millimetres below the freeboard deck; or
less than 600 millimetres above the Summer load waterline,
shall be equipped with an automatic non-return valve situated as close to the ship’s shell as practicable and substantially connected thereto:
Provided that this paragraph shall not apply— (i)where the scupper or discharge pipe is fitted with means for preventing water from passing inboard in accordance with the provisions of subparagraphs (1) to (3); or (ii)in any case in which the piping of the scupper or discharge pipe is of substantial thickness.
Every scupper leading from a superstructure other than an enclosed superstructure or from a deckhouse not fitted with weathertight doors shall be led overboard.
All valves and shell fittings required by the provisions of this paragraph shall be of steel, bronze or other suitable ductile material, and all pipes referred to in this paragraph shall be of steel or equivalent material.
13. Side scuttles
Every side scuttle to space below the freeboard deck or to space within an enclosed superstructure shall be fitted with a hinged inside deadlight by which it can be effectively closed and secured watertight.
No side scuttle shall be fitted in a position such that its sill, when load lines have been marked on the ship’s side, will be below a line drawn parallel to the freeboard deck at side having as its lowest point—
2.5 per cent of the breadth of the ship (B) above the Summer load line; or
500 millimetres above the Summer load line,
whichever is the greater.
Every side scuttle, deadlight and glass (if fitted) shall be of substantial construction and be efficiently fitted.
14. Freeing ports and arrangements
Where bulwarks on the weather portions of the freeboard deck, a raised quarter deck or a superstructure deck form wells, efficient provision shall be made for rapidly freeing the decks of water in bulk and for draining them, and in particular the requirements set out in subparagraphs (2) to (7) shall be complied with.
Except as otherwise provided in subparagraphs (3) and (4), the sum of the areas of the openings of freeing ports on each side of the ship for each such well (hereafter referred to in this paragraph as the freeing port area and by the symbol (A)) shall—
if the well is on the freeboard deck or on a raised quarter deck be not less than the area ascertained in accordance with the following formula; and
if the well is on a superstructure deck other than a raised quarter deck be not less than one half of that area—
Formula
Where the length of a bulwark (l) in the well is 20 metres or less
(A) = 0.7 + 0.035 (l) (square metres);
and where (l) exceeds 20 metres,
(A) = 0.07 (l) (square metres).
(l) need in no case be taken as greater than 0.7(L).
If the bulwark is more than 1.2 metres in average height the required area shall be increased by 0.004 square metres per metre of length of well for each 0.1 metre difference in height. If the bulwark is less than 0.9 metre in average height, the required area may be decreased by 0.004 square metre per metre of length of well for each 0.1 metre difference in height.
If the deck on which the well is situated has no sheer, the area (A) shall be the area ascertained in accordance with subparagraph (2) increased by 50 per cent.
If the deck on which the well is situated has sheer less than standard sheer, the area (A) shall be the area ascertained in accordance with subparagraph (2) increased by a percentage to be obtained by linear interpolation.
If the deck on which the well is situated has sheer, two-thirds of the freeing port area (A) shall be situated in the half of the well which is nearest to the lowest point of the sheer. (E.R. 3 of 2021)
The lower edge of every freeing port shall be as near to the deck as practicable.
Every freeing port more than 230 millimetres in depth shall be protected by rails or bars so fixed that the distance between the lowest rail or bar and the lower edge of the freeing port does not exceed 230 millimetres.
Every freeing port which is fitted with a shutter shall have sufficient clearance to prevent jamming of the shutter, and the shutter hinges shall have pins or bearings of efficient non-corrodible material.
Efficient provision shall be made for freeing from water any superstructure other than an enclosed superstructure.
15. Protection of the crew
Every deckhouse used for the accommodation of members of the crew shall be of efficient construction.
Except as otherwise provided in subparagraph (3), all exposed parts of the freeboard deck and of every superstructure deck shall be fitted at their perimeter either with efficient guard rails or guard wires and stanchions complying with the requirements of subparagraph (4) or with bulwarks, being in either case at least 1 metre in height from the deck at side.
The height specified in relation to guard rails or guard wires and bulwarks in subparagraph (2) may be reduced at any particular point if—
the working of the ship would be unreasonably interfered with if such minimum height were adhered to at that point; and
adequate protection is provided at that point.
Guard rails or guard wires fitted pursuant to subparagraph (2) shall consist of courses of rails or wires supported by stanchions efficiently secured to the deck. The opening between the lowest course of the rails or wires and the deck shall not exceed 230 millimetres in height, and no opening above that course of rails or wires shall exceed 380 millimetres in height. Where the ship has rounded gunwales the stanchions shall be secured at the perimeter of the flat of the deck.
Gangways, underdeck passages and all other means of access by which members of the crew pass between their quarters, the machinery space and any other space in the ship used by them in the course of their necessary work about the ship shall be so designed and constructed, and be fitted where necessary with such life lines, access ladders, guard rails or guard wires, hand rails or other safety fittings, as to afford effective protection for the crew.
The requirements of this paragraph shall not apply in the case of unmanned barges.
_
Part II — Special Requirements Applicable to Type “A” Ships
16. Application
The requirements of paragraphs 17 to 20 of this Part apply in the case of Type “A” ships only.
17. Machinery casings
Every casing enclosing a machinery space opening in Position 1 or Position 2 shall be protected by either—
an enclosed poop or bridge of at least standard height; or
a deckhouse of equal height and equivalent strength and weathertightness:
Provided that this requirement shall not apply and the casing may, accordingly be exposed—
if there is no opening in the casing which gives direct access from the freeboard deck to the machinery space; or
if the only opening in the casing has a steel weathertight door and leads to a space or passageway which is as strongly constructed as the casing and is separated from the stairway to the machinery space by a second steel weathertight door.
18. Gangway and access
References in this paragraph to a poop or detached bridge include references to a deckhouse fitted in lieu of and serving the purpose of a poop or detached bridge.
Access between the poop and the detached bridge shall be by means of either—
a permanent and efficiently constructed gangway of substantial strength connecting those structures. The gangway shall be at the level of the superstructure deck and have a platform at least 1 metre in width and of non-slip material. Efficient means of access from gangway level to the deck shall be provided at each terminal point. The platform shall be fitted at each side throughout its length with guard rails or guard wires supported by stanchions. Such rails or wires shall consist of not less than 3 courses, the lowest being not more than 230 millimetres, and the uppermost being at least 1 metre, above the platform, and no intermediate opening being more than 380 millimetres in height. Stanchions shall be at intervals of not more than 1.5 metres; or
an underdeck passage connecting and providing unobstructed access between those structures and complying with the requirements of subparagraph (3); or
equivalent means of access.
An underdeck passage provided pursuant to subparagraph (2)(b) shall comply with the following requirements—
the passage and all fittings therein shall be oil and gas tight;
the passage shall be well lighted, and be fitted with efficient gas detection and ventilation systems;
it shall be situated immediately below the freeboard deck;
its distance from the shell plating shall at no point throughout its length be less than one fifth of the breadth (B) of the ship:
Provided that in the case of a ship so designed as to render compliance with this requirement not reasonably practicable, two underdeck passages may be provided one to port and one to starboard each of which shall comply with all requirements of this paragraph except this requirement;
means of exit from the passage to the freeboard deck shall be—
so arranged as to be as near as practicable to the working areas to be used by the crew;
in no case be more than 90 metres apart; and
fitted with efficient means of closing which are capable of quick release and operable from either side;
openings in the freeboard deck corresponding to the means of exit referred to in sub-subparagraph (e) shall be protected in accordance with the requirements of paragraph 8(2)(a).
In the case of a ship the crew of which may in the course of their duties be required to go in adverse weather conditions to a position or positions forward of the detached bridge, or forward of the poop in cases where there is no detached bridge and all crew accommodation and machinery spaces are situated at the after end of the ship, access to such positions shall be by means of either—
a gangway complying with the requirements of subparagraph (2)(a); or
an underdeck passage complying with the requirements of subparagraph (3); or
a walkway complying with the requirements of subparagraph (5).
A walkway provided pursuant to subparagraph (4)(c) shall—
be not less than 1 metre in width and be situated on or as near as practicable to the centre line of the ship;
be fitted at each side throughout its length with guard rails or guard wires complying with the requirements set out in relation to such rails or wires in subparagraph (2)(a);
have openings giving free access to and from the freeboard deck, set in such guard rails or guard wires as near as practicable to the working areas to be used by the crew, so however that such openings shall be on alternate sides of the walkway and be situated not more than 90 metres apart on either side;
if the length of exposed deck to be traversed exceeds 70 metres, have shelters of substantial construction set in way of the walkway at intervals not exceeding 45 metres, every such shelter being capable of accommodating at least one person and so constructed as to afford weather protection on the forward, port and starboard sides;
if obstructed by pipes or other fittings of a permanent nature, be provided with efficient means of passage over such obstruction.
The requirements of this paragraph shall not apply in the case of unmanned barges.
19. Hatchway covers
The covers of hatchways in an exposed position on the freeboard deck, on a forecastle deck or on the top of an expansion trunk shall be of steel, of efficient construction, and watertight when secured.
20. Freeing arrangements
All exposed parts of the freeboard deck and superstructure decks shall be fitted at their perimeter for at least half their length with guard rails or guard wires in lieu of bulwarks or with other equally effective freeing arrangements. Such guard rails or guard wires shall comply with the requirements set out in relation to such rails or wires in paragraph 18(2)(a).
The upper edge of the sheer strake shall be as low as practicable.
If superstructures of the ship are connected by a trunk, the exposed parts of the freeboard deck in way of the trunk shall be fitted at their perimeter throughout their length with guard rails or guard wires complying with the requirements set out in relation to such rails or wires in paragraph 18(2)(a).
If the ship is so constructed that notwithstanding the provision of freeing ports and arrangements it will be particularly subjected under service conditions to the building up of quantities of water on the freeboard deck, efficient breakwaters shall be fitted in suitable positions on that deck.
_
Part III — Special Requirements Applicable to certain Type “B” Ships
21. Application
The requirements of paragraphs 22 to 25 apply only in the case of Type “B” ships to be assigned a reduced freeboard under the provisions of paragraph 5(3) of Schedule 5.
22. Gangway and access
The ship shall comply with the requirements of either—
paragraph 18 as if it were a Type “A” ship; or
paragraphs 23 and 24.
23.
References in this paragraph to a poop or detached bridge include references to a deckhouse fitted in lieu of and serving the purpose of a poop or detached bridge.
Access between the poop and the detached bridge shall be by means of an efficiently constructed gangway of substantial strength connecting those structures, fitted on or near the centre line of the ship. The gangway shall be at least 1 metre in width and shall be fitted at each side throughout its length with guard rails or guard wires complying with the requirements set out in relation to such rails or wires in paragraph 18(2)(a). If the length of the gangway exceeds 70 metres, shelters complying with the requirements set out in relation to shelters in paragraph 18(5)(d) shall be provided in way of the gangway.
24.
In the case of a ship the crew of which may in the course of their duties be required to go in adverse weather conditions to a position or positions forward of the detached bridge, or forward of the poop in cases where there is no detached bridge and all crew accommodation and machinery spaces are situated at the after end of the ship, access to such positions shall be—
by the means described in paragraph 18(4); or
by the means described in paragraph 23(2); or
equivalent means of access:
Provided that in the case of a ship the hatchway coamings of which are 600 millimetres or more in height from the deck, 2 walkways giving access to the said positions and complying with the following requirements may be provided—
the walkways shall be efficiently constructed and of satisfactory strength;
the walkways shall each be at least 1 metre in width and shall be fitted on the freeboard deck alongside the outboard structure of the hatchway coamings, one to port and the other to starboard of the hatchways;
each walkway shall be fitted on the side outboard of the hatchways with guard rails or guard wires complying with the requirements set out in relation to such rails or wires in paragraph 18(2)(a).
25. Freeing arrangements
The ship shall comply with the requirements of paragraph 20(4).
_
Part IV — Special Requirements Applicable to Ships to beAssigned Timber Freeboards
26. Application
The requirements of paragraphs 27 to 29 of this Part apply only in the case of ships to be assigned Timber freeboards.
27. Superstructures
The ship shall have a forecastle of not less than the standard height of an enclosed superstructure and not less in length than 0.07(L).
If the ship is less than 100 metres in length it shall be fitted aft with either—
a poop of not less than standard height; or
a raised quarter deck having either a deck house or a strong steel hood, so that the total height thereof is not less than the standard height of an enclosed superstructure.
28. Double bottom tanks
Double bottom tanks where fitted within the midship half length of the ship shall have satisfactory watertight longitudinal subdivision.
29. Bulwarks, guard rails and stanchions
The ship shall be fitted with either—
permanent bulwarks at least 1 metre in height which are specially stiffened on the upper edge and supported by strong bulwark stays attached to the deck, and are provided with freeing ports complying with the requirements of paragraph 14(1) to (6); or
efficient guard rails and stanchions at least 1 metre in height, of specially strong construction, and complying with the requirements of paragraph 15(4).
_
Part V
(Repealed L.N. 47 of 2018)
Schedule 5 — Freeboards for Pre-2005 Ships
[reg. 27]1. Interpretation
In this Schedule expressions defined in Schedule 4 have the meanings thereby assigned to them respectively, and—
block coefficient (方形系數) or the symbol (Cb) in relation to a ship means the product of—| ▽ |
| L.Bd1 |
| T((L) − (S)) |
| (L) |
2. Freeboards: general
Except as otherwise provided in subparagraphs (2) and (3), the freeboards to be assigned to a ship other than Timber freeboards shall be determined in accordance with the provisions of Part I of this Schedule, and Timber freeboards to be assigned to a ship shall be determined in accordance with Part II.
Freeboards determined as described in subparagraph (1) are the freeboards appropriate to ships the structural strength of which complies with the highest standard required by an Assigning Authority; and the freeboards to be assigned to ships the structural strength of which does not comply with that standard shall be freeboards so determined but increased in each case by such amount as the Director may approve as appropriate to the ship’s structural strength.
The freeboards to be assigned to—
unmanned barges having on the freeboard deck only small access openings closed by watertight gasketed covers of steel,
shall be determined in accordance with the provisions of Part III of this Schedule.
Part I — Freeboards other than Timber Freeboards
3. Determination of freeboards
The Summer freeboard shall be determined in accordance with the provisions of paragraphs 4 to 16 of this Schedule:
Provided that the freeboard so obtained but omitting any correction made for deck-line as provided in paragraph 8 shall be not less than 50 millimetres except in the case of a ship with hatchways in Position 1 to which paragraph 5 of Schedule 4 applies but which do not have pontoon covers, in which case it shall be not less than 150 millimetres.
The Tropical freeboard shall be obtained by deducting from the Summer freeboard applicable to the ship one forty-eighth (1/48th) of the summer draught of the ship:
Provided that the freeboard so obtained but omitting any correction made for deck-line as provided in paragraph 8 shall be not less than 50 millimetres except in the case of a ship with hatchways in Position 1 to which paragraph 5 of Schedule 4 applies but which do not have pontoon covers, in which case it shall be not less than 150 millimetres.
The Winter freeboard shall be obtained by adding to the Summer freeboard applicable to the ship one forty-eighth (1/48th) of the summer draught of the ship.
The Winter North Atlantic freeboard shall be obtained by adding to the Winter freeboard applicable to the ship a distance of 50 millimetres.
The Fresh Water freeboard shall, subject to sub-subparagraph (b), be obtained by deducting from the Summer freeboard the quantity— (E.R. 3 of 2021)
| △ | millimetres |
| 4T |
where △ is the displacement in salt water in metric tons at the Summer load waterline, and T represents metric tons per centimetre immersion in salt water at that waterline.
In any case in which the displacement at that waterline cannot be ascertained the deduction shall be one forty-eighth (1/48th) of the summer draught of the ship. (E.R. 3 of 2021)
4. Summer freeboard: Type “A” ships
The Summer freeboard to be assigned to a Type “A” ship shall be determined as follows—
There shall first be ascertained the ship’s tabular freeboard.
If the block coefficient (Cb) of the ship exceeds 0.68 the tabular freeboard shall be multiplied by the factor ( C b ) + 0 . 68 1 . 36 .
Corrections in accordance with paragraphs 6 to 16 of this Schedule shall be applied to the freeboard ascertained in accordance with subparagraphs (1) and (2).
Subject to the proviso to paragraph 3(1), the freeboard so corrected shall be the Summer freeboard to be assigned to the ship.
5. Summer freeboard: Type “B” ships
The Summer freeboard to be assigned to a Type “B” ship shall be determined as follows—
There shall first be ascertained the ship’s tabular freeboard.
If the ship has hatchways in Position 1 the covers of which are either (i) pontoon covers complying with the requirements of paragraph 5(4) of Schedule 4 or (ii) covers which comply with those of paragraph 6 of that Schedule, the tabular freeboard may be corrected in accordance with such of the provisions of subparagraphs (3) to (7) of this paragraph as are applicable to the ship.
If the ship has hatchways in Position 1 the covers of which comply with the requirements of paragraph 5 of Schedule 4 except those of subparagraph (4) of that paragraph, the tabular freeboard shall be corrected in accordance with the provisions of subparagraph (8) of this paragraph.
The tabular freeboard of a ship to which subparagraph (2)(a) applies and which exceeds 100 metres in length may be reduced by an amount not exceeding the maximum applicable under subparagraphs (4) and (5) if the Assigning Authority is satisfied that—
the measures for the protection of the crew comply with the requirements of paragraph 15 of Schedule 4;
the freeing arrangements comply with the requirements of paragraph 14 of Schedule 4;
all covers of hatchways in Positions 1 and 2 comply with the requirements of paragraph 6 of Schedule 4;
the ship when loaded to the Summer load waterline will remain afloat, after the flooding of any single damaged compartment other than the machinery space at an assumed permeability of 0.95, in the condition of equilibrium described in subparagraph (6): Provided that if the length of the ship exceeds 225 metres the machinery space shall rank as a floodable compartment for the purposes of this requirement having for the purpose an assumed permeability of 0.85.
Subject to subparagraph (5) no reduction of freeboard pursuant to subparagraph (3) shall exceed 60 per cent of the difference between the tabular freeboards appropriate to the ship’s length under Freeboard Table A and Freeboard Table B.
The reduction of 60 per cent referred to in subparagraph (4) may be increased to 100 per cent if the Assigning Authority is satisfied that—
the ship complies with the requirements of paragraphs 17 and 20 of Schedule 4 as if it were a Type “A” ship and with those of paragraph 22 of that Schedule;
the ship complies with the requirements of subparagraph (3)(a) to (c); and
the ship when loaded to the Summer load waterline will remain afloat in the condition of equilibrium described in subparagraph (6) after the flooding—
of any two compartments adjacent fore and aft, neither of which is the machinery space, at an assumed permeability of 0.95; and
in the case of a ship exceeding 225 metres in length, of the machinery space alone, at an assumed permeability of 0.85.
The condition of equilibrium referred to in subparagraphs (3) and (5) above is as follows—
the final waterline after flooding is below the top of any ventilator coaming, the lower edge of any air pipe opening, the upper edge of the sill of any access opening fitted with a weathertight door, and the lower edge of any other opening through which progressive flooding may take place;
the angle of heel due to unsymmetrical flooding does not exceed 15 degrees;
the metacentric height calculated using the constant displacement method has a positive value of at least 50 millimetres in the upright condition after flooding; and
the ship has adequate residual stability.
The following assumptions shall be made for the purposes of calculations pursuant to subparagraphs (3)(d) and (5)(c)—
that the vertical extent of damage is equal to the depth of the ship at the point of damage, measured from and including the freeboard deck at side to the underside of the keel;
that the transverse penetration of damage is not more than one fifth of the breadth of the ship (B), this distance being measured inboard from the ship’s side at right angles to the centre line of the ship at the level of the Summer load waterline: Provided that if damage of a lesser extent results in a more severe condition, such lesser extent shall be assumed;
that, except in the case of compartments referred to in subparagraph (5)(c)(i), no main transverse bulkhead is damaged;
that the height of the centre of gravity above the base-line is assessed allowing for homogeneous loading of cargo holds and for 50 per cent of the designed capacity of consumable fluids and stores.
The tabular freeboard of a ship which subparagraph (2)(b) applies shall be increased by the amount shown by the following Table to be appropriate to the ship’s length—
| Length of Ship (metres) | Freeboard increase (millimetres) | Length of Ship (metres) | Freeboard increase (millimetres) | Length of Ship (metres) | Freeboard increase (millimetres) | ||||||||||||||||||||||||||||||||||||||||||||
| 108 and below | 50 | 123 | 95 | 138 | 170 | ||||||||||||||||||||||||||||||||||||||||||||
| 109 | 52 | 124 | 99 | 139 | 175 | ||||||||||||||||||||||||||||||||||||||||||||
| 110 | 55 | 125 | 103 | 140 | 181 | ||||||||||||||||||||||||||||||||||||||||||||
| 111 | 57 | 126 | 108 | 141 | 186 | ||||||||||||||||||||||||||||||||||||||||||||
| 112 | 59 | 127 | 112 | 142 | 191 | ||||||||||||||||||||||||||||||||||||||||||||
| 113 | 62 | 128 | 116 | 143 | 196 | ||||||||||||||||||||||||||||||||||||||||||||
| 114 | 64 | 129 | 121 | 144 | 201 | ||||||||||||||||||||||||||||||||||||||||||||
| 115 | 68 | 130 | 126 | 145 | 206 | ||||||||||||||||||||||||||||||||||||||||||||
| 116 | 70 | 131 | 131 | 146 | 210 | ||||||||||||||||||||||||||||||||||||||||||||
| 117 | 73 | 132 | 136 | 147 | 215 | ||||||||||||||||||||||||||||||||||||||||||||
| 118 | 76 | 133 | 142 | 148 | 219 | ||||||||||||||||||||||||||||||||||||||||||||
| 119 | 80 | 134 | 147 | 149 | 224 | ||||||||||||||||||||||||||||||||||||||||||||
| 120 | 84 | 135 | 153 | 150 | 228 | ||||||||||||||||||||||||||||||||||||||||||||
| 121 | 87 | 136 | 159 | 151 | 232 | ||||||||||||||||||||||||||||||||||||||||||||
| 122 | 91 | 137 | 164 | 152 | 236 | ||||||||||||||||||||||||||||||||||||||||||||
| Length of Ship (metres) | Freeboard increase (millimetres) | Length of Ship (metres) | Freeboard increase (millimetres) | Length of Ship (metres) | Freeboard increase (millimetres) | ||||||||||||||||||||||||||||||||||||||||||||
| 153 | 240 | 169 | 287 | 185 | 325 | ||||||||||||||||||||||||||||||||||||||||||||
| 154 | 244 | 170 | 290 | 186 | 327 | ||||||||||||||||||||||||||||||||||||||||||||
| 155 | 247 | 171 | 292 | 187 | 329 | ||||||||||||||||||||||||||||||||||||||||||||
| 156 | 251 | 172 | 294 | 188 | 332 | ||||||||||||||||||||||||||||||||||||||||||||
| 157 | 254 | 173 | 297 | 189 | 334 | ||||||||||||||||||||||||||||||||||||||||||||
| 158 | 258 | 174 | 299 | 190 | 336 | ||||||||||||||||||||||||||||||||||||||||||||
| 159 | 261 | 175 | 301 | 191 | 339 | ||||||||||||||||||||||||||||||||||||||||||||
| 160 | 264 | 176 | 304 | 192 | 341 | ||||||||||||||||||||||||||||||||||||||||||||
| 161 | 267 | 177 | 306 | 193 | 343 | ||||||||||||||||||||||||||||||||||||||||||||
| 162 | 270 | 178 | 308 | 194 | 346 | ||||||||||||||||||||||||||||||||||||||||||||
| 163 | 273 | 179 | 311 | 195 | 348 | ||||||||||||||||||||||||||||||||||||||||||||
| 164 | 275 | 180 | 313 | 196 | 350 | ||||||||||||||||||||||||||||||||||||||||||||
| 165 | 278 | 181 | 315 | 197 | 353 | ||||||||||||||||||||||||||||||||||||||||||||
| 166 | 280 | 182 | 318 | 198 | 355 | ||||||||||||||||||||||||||||||||||||||||||||
| 167 | 283 | 183 | 320 | 199 | 357 | ||||||||||||||||||||||||||||||||||||||||||||
| 168 | 285 | 184 | 322 | 200 | 358 | ||||||||||||||||||||||||||||||||||||||||||||
This subparagraph applies to every Type “B” ship of not more than 100 metres in length having enclosed superstructures the total effective length of which does not exceed 35 per cent of the ship’s length (L).
The freeboard calculated in respect of such a ship in accordance with subparagraphs (1), (2) and (8) above shall be increased by an amount ascertained in accordance with the formula 7 . 5 100 − L ( 0 . 35 − E L ) millimetres.
In the case of a ship the block coefficient (Cb) of which exceeds 0.68 the freeboard calculated in respect of the ship in accordance with subparagraphs (1) to (9) shall be multiplied by the factor ( C b + 0 . 68 ) 1 . 36 .
Corrections in accordance with paragraphs 6 to 16 of this Schedule shall be applied to the freeboard ascertained in accordance with subparagraphs (1) to (10) and subject to the proviso to paragraph 3(1) the freeboard so corrected shall be the Summer freeboard to be assigned to the ship.
6. Basic freeboard
In the following paragraphs of this Schedule basic freeboard (基本乾舷) in relation to a ship means the Summer freeboard calculated for the ship in accordance with paragraph 4 or 5 whichever is applicable, but omitting in the case of a Type “A” ship the corrections referred to in paragraph 4(3) and in the case of a Type “B” ship the corrections referred to in paragraph 5(11).
7. Correction for depth
If the depth for freeboard (D) of a ship exceeds (L) 15 , the basic freeboard of the ship shall be increased by D − L 15 R millimetres, R for this purpose being taken to be L 0 . 48 in the case of a ship less than 120 metres in length, and 250 in the case of a ship of 120 metres or more in length.
If the depth for freeboard (D) of a ship is less than (L) 15 , the basic freeboard of the ship shall be reduced by D − L 15 R millimetres if, but only if, the ship has either (a) an enclosed superstructure covering at least 0.6(L) amidships, or (b) an efficient trunk extending for the ship’s length (L), or (c) a combination of enclosed superstructures connected by efficient trunks, being a combination extending for the ship’s length (L):
Provided that if the height of any such superstructure or trunk is less than standard height the amount of such reduction shall be reduced in the ratio of the actual to the standard height of the superstructure or trunk.
8. Correction for position of deck-line
If the actual depth to the upper edge of the deck-line is greater or less than the depth for freeboard (D), the difference if greater shall be added to, or if less shall be deducted from, the basic freeboard of the ship:
Provided that in a case in which the position of the deck-line has been fixed in accordance with the provisions of regulation 14(3), the actual depth of the ship shall be taken for the purposes of the foregoing requirement to the point amidships where the continuation outwards of the upper surface of the freeboard deck or of any sheathing of that deck intersects the outer surface of the shell of the ship.
9. Standard height, length and effective length of superstructures
The standard height of a superstructure shall be the height appropriate to the ship’s length (L) determined in accordance with the following Table—
| Length of ship (L) (metres) | Standard Height (metres) | |
| of a raised quarter deck | of a superstructure other than a raised quarter deck | |
| 30 or less | 0.90 | 1.80 |
| 75 | 1.20 | 1.80 |
| 125 or more | 1.80 | 2.30 |
Subject to sub-subparagraph (b), the length of a superstructure (S) shall be the mean length of the parts of the superstructure which lie within the length of the ship (L).
In the case of an enclosed superstructure having an end bulkhead which extends in a fair convex curve beyond its intersection with the superstructure sides, the length of the superstructure (S) may be taken as its length ascertained in accordance with sub-subparagraph (a) increased on the basis of an equivalent plane bulkhead by the amount of two-thirds of the fore and aft extent of the curvature: Provided that the amount of the curvature to be taken into account shall not exceed one half the breadth of the superstructure at the point of intersection of the curved end of the superstructure with its side.
The effective length of a superstructure (E) shall be as follows—
Subject to sub-subparagraph (c), (E) in the case of an enclosed superstructure of standard height shall be either—
its length (S); or
if the superstructure is set in from the sides of the ship, its length (S) modified in the ratio b/Bs, where—
“b” is the breadth of the superstructure at the middle of its length (S); and
”Bs” is the breadth of the ship at the middle of the length of the superstructure (S):
Provided that if the superstructure is so set in for part only of its length, such modification shall be applied only to that part.
Subject to sub-subparagraph (c), (E) in the case of an enclosed superstructure of less than standard height shall be its length (S) reduced in the ratio of the actual height of the superstructure to its standard height.
(E) in the case of an enclosed superstructure consisting of a raised quarter deck shall, if the deck is fitted with an intact front bulkhead, be its length (S) subject to a maximum of 0.6 of the ship’s length (L); and if not so fitted, be ascertained by treating the raised quarter deck as a poop of less than standard height.
A superstructure which is not an enclosed superstructure shall have no effective length.
10. Standard height and effective length of trunks
The standard height of a trunk shall be determined in the same manner as that applicable to a superstructure other than a raised quarter deck under paragraph 9(1).
The effective length of a trunk shall be determined as follows—
A trunk which is not an efficient trunk as described in sub-subparagraph (b) shall have no effective length.
A trunk shall be treated as an efficient trunk subject to the following conditions—
that it shall be at least as strong as a superstructure;
that the hatchways in way of the trunk are in the trunk deck, and the hatchway coamings and covers comply with the requirements of paragraphs 4 to 6 of Schedule 4: Provided that small access openings with watertight covers may be permitted in the freeboard deck;
that the width of the trunk deck stringer provides a satisfactory gangway and sufficient lateral stiffness;
that a permanent working platform fore and aft fitted with guard rails or guard wires complying with the requirements applicable thereto under paragraph 18(2)(a) of Schedule 4 is provided by the trunk deck, or by detached trunks connected to superstructures by efficient permanent gangways;
that ventilators are protected by the trunk, by watertight covers or by equivalent means;
that open rails or wires are fitted on the weather parts of the freeboard deck in way of the trunk for at least half their length;
that the machinery casings are protected by the trunk, or by an enclosed superstructure of at least standard height, or by a deckhouse of the same height and of strength and weathertightness equivalent to those of such a superstructure;
that the breadth of the trunk is at least 60 per cent of the breadth of the ship (B);
that where there is no superstructure the length of the trunk is at least 0.6(L).
Except as otherwise provided in sub-subparagraph (d), the effective length of an efficient trunk shall be its full length reduced in the ratio of its mean breadth to the breadth of the ship (B).
If the actual height of an efficient trunk is less than the standard height, its effective length shall be the length calculated in accordance with sub-subparagraph (c) reduced in the ratio of the actual to the standard height of the trunk. In addition, if the ship is a Type “B” ship and the height of hatchway coamings on the trunk deck is less than that required by paragraph 5(1) or 6(1) of Schedule 4 a reduction from the actual height of the trunk shall be made of an amount corresponding to the difference between the actual height of such coamings and the height so required for them.
11. Deduction for effective length of superstructures and trunks
Where the sum of the effective lengths of superstructures of a ship is 1.0(L), the basic freeboard of the ship shall be reduced—
by 350 millimetres if the ship is 24 metres in length (L);
by 860 millimetres if the ship is 85 metres in length (L);
by 1070 millimetres if the ship is 122 metres in length (L) or more,
and by amounts obtained by linear interpolation in the case of ships of intermediate length.
The basic freeboard of a ship, shall be reduced according to the total effective length of her superstructures and trunks as follows—
in the case of a Type “A” ship, by a percentage ascertained by reference to the following Table, the percentage in the case of a ship having superstructures and trunks of an effective length intermediate to those specified in the Table being obtained by linear interpolation—
| TablePercentage of Deduction for Type “A” Ships | ||||||||||||
| Percentage of deduction for all types of superstructures | Total effective length of superstructures and trunks | |||||||||||
| 0 | 0.1 (L) | 0.2 (L) | 0.3 (L) | 0.4 (L) | 0.5 (L) | 0.6 (L) | 0.7 (L) | 0.8 (L) | 0.9 (L) | 1.0 (L) | ||
| 0 | 7 | 14 | 21 | 31 | 41 | 52 | 63 | 75.3 | 87.7 | 100 | ||
in the case of a Type “B” ship, by a percentage ascertained by reference to the following Table and to such of directions (i) to (iii) appended thereto as apply in the circumstances, the percentage in the case of a ship having superstructures and trunks of an effective length intermediate to those specified in the Table being obtained by linear interpolation—
| TablePercentage of Deduction for Type “B” Ships | |||||||||||||
| Ships with forecastle and without detached bridge | Total effective length of superstructures and trunks | ||||||||||||
| Line | 0 | 0.1 (L) | 0.2 (L) | 0.3 (L) | 0.4 (L) | 0.5 (L) | 0.6 (L) | 0.7 (L) | 0.8 (L) | 0.9 (L) | 1.0 (L) | ||
| 1 | 0 | 5 | 10 | 15 | 23.5 | 32 | 46 | 63 | 75.3 | 87.7 | 100 | ||
| Ships with forecastle and detached bridge | 11 | 0 | 6.3 | 12.7 | 19 | 27.5 | 36 | 46 | 63 | 75.3 | 87.7 | 100 | |
Where the effective length of a bridge covers less than 0.1(L) before amidships and 0.1(L) abaft amidships the percentages shall be obtained by linear interpolation between the lines I and II.
Where the effective length of a forecastle is more than 0.4(L), the percentages shall be obtained from line II.
Where the effective length of a forecastle is less than 0.07(L), the above percentages shall be reduced by:
| 5 × | (0.07(L) f) | ||
| 0.07(L) | |||
where “f” is the effective length of the forecastle.
12. Measurement of sheer
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.
In ships designed with a rake of keel, the sheer shall be measured in relation to a line of reference drawn parallel to the Summer load waterline.
In flush deck ships and in ships with detached superstructures the sheer shall be measured at the freeboard deck.
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.
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 of the superstructure exceeds the standard height the least difference (Z) between the actual and standard heights shall be added to each end ordinate. Similarly, the intermediate ordinates at distances of 1/6(L) and 1/3(L) from each perpendicular shall be increased by 0.444(Z) and 0.111(Z) respectively.
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.
Where an enclosed poop or forecastle is either (a) of standard height with greater sheer than that of the freeboard deck, or (b) is of more than standard height, an addition to the sheer of the freeboard deck shall be made calculated in accordance with paragraph 14(4).
13. Standard sheer profile
The ordinates of the standard sheer profile are given in the following Table—
| Station | Ordinate (in millimetres) | Factor | |||
| After half | After perpendicular | 25 ( | (L) | + 10) | 1 |
| 3 | |||||
| 1/6 (L) from A.P. | 11.1 ( | (L) | + 10) | 3 | |
| 3 | |||||
| 1/3 (L) from A.P. | 2.8 ( | (L) | + 10) | 3 | |
| 3 | |||||
| Amidships | 0 | 1 | |||
| Forward half | Amidships | 0 | 1 | ||
| 1/3 (L) from F.P. | 5.6 ( | (L) | + 10) | 3 | |
| 3 | |||||
| 1/6 (L) from F.P. | 22.2 ( | (L) | + 10) | 3 | |
| 3 | |||||
| Forward perpendicular | 50 ( | (L) | + 10) | 1 | |
| 3 | |||||
14. Measurement of variation from standard sheer profile
Where the sheer profile of a ship differs from the standard sheer profile, the four ordinates of each profile in the forward and after halves of the ship shall be multiplied by the appropriate factors given in the Table of ordinates in paragraph 13. The difference between the sums of the respective products and those of the standard divided by 8 shall be 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 shall be the excess or deficiency of sheer.
Where the after half of the sheer profile is greater than the standard sheer profile and the forward half is less than the standard sheer profile, no credit shall be allowed for the part in excess, and deficiency only shall be measured.
Where the forward half of the sheer profile exceeds the standard sheer profile, and the after half of the sheer profile is not less than 75 per cent of the standard sheer profile, credit shall be allowed for the part in excess.
Where the after half of the sheer profile is less than 50 per cent of the standard sheer profile, no credit shall be given for the excess of sheer forward.
Where the sheer in the after half is between 50 per cent and 75 per cent of the standard sheer profile, intermediate allowances may be granted for excess sheer forward.
Where sheer credit is given for a poop or forecastle the following formula shall be used:
| s = | y | × | L’ | |
| 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 end ordinate of sheer; and
L’ = mean enclosed length of poop or forecastle up to a maximum length of 0.5(L).
The above formula provides a curve in the form of a parabola tangential to the actual sheer curve at the freeboard deck and intersecting the end ordinate at a point below the superstructure deck at a distance equal to the standard height of the poop or forecastle. 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.
15. Correction for variations from standard sheer profile
The correction for sheer shall be the deficiency or excess of sheer determined in accordance with paragraph 14 multiplied by 0 . 75 − S 2 ( L ) .
In the case of a ship with sheer less than the standard sheer profile, the correction for deficiency of sheer determined in accordance with subparagraph (1) shall be added to the basic freeboard of the ship.
Subject to subparagraph (4), in the case of a ship having an excess of sheer—
if an enclosed superstructure covers 0.1(L) before and 0.1(L) abaft amidships, the correction for excess of sheer determined in accordance with subparagraph (1) shall be deducted from the basic freeboard of the ship;
if no enclosed superstructure covers amidships, no deductions shall be made from the basic freeboard of the ship;
if an enclosed superstructure covers less than 0.1(L) before and 0.1(L) abaft amidships, the correction for excess of sheer determined in accordance with subparagraph (1) shall be modified in the ratio of the amount of 0.2(L) amidships which is covered by the superstructure, to 0.2(L).
The maximum deduction for excess sheer shall be at the rate of 125 millimetres per 100 metres of length (L).
16. Correction for minimum bow height
Except as otherwise provided in subparagraphs (2) and (3), where the bow height of a ship determined in accordance with subparagraph (4) is less than the minimum bow height appropriate to the ship determined in accordance with subparagraph (5), the freeboard determined for the ship in accordance with the foregoing paragraphs shall be increased by an amount equal to the difference between the bow height and the minimum bow height.
Where an existing ship to which subparagraph (1) applies has been so constructed or modified as to comply with all the requirements of Schedule 4 applicable to a new ship of her type and is to be assigned freeboards determined in accordance with this Schedule, and/or—
the forecastle is less than 0.07(L);
the sheer extends for less than 15 per cent of the ship’s length (L) measured from the forward perpendicular,
the freeboard determined for the ship in accordance with the foregoing paragraphs shall be increased by such amount as the Director may determine in each particular case.
In the case of a ship to which subparagraph (1) applies, being a ship which is constructed to meet exceptional operational requirements, the correction to be made pursuant to subparagraphs (1) and (2) may be reduced or waived if the Director is satisfied that the safety of the ship will not be impaired in consequence in the worst sea and weather conditions likely to be encountered by the ship in service.
The bow height of a ship is the vertical distance at the forward perpendicular between the Summer load waterline of the ship at the designed trim and the top of the exposed deck at side ascertained as follows—
Where the bow height is obtained by including sheer, the sheer shall extend for not less than 15 per cent of the ship’s length (L) measured from the forward perpendicular.
Where the bow height is obtained by including the height of a superstructure, such superstructure shall—
extend from the stem to a point not less than 0.07 of the ship’s length (L) measured from the forward perpendicular;
if the ship’s length (L) is 100 metres or less, be an enclosed superstructure; and
if the ship’s length (L) exceeds 100 metres in length, be fitted with satisfactory closing appliances.
The minimum bow height for a ship shall be derived from formula 1 in the case of a ship of less than 250 metres in length (L) and from formula 2 in the case of a ship of 250 metres of more in length (L)—
| Formula 1 | |||||||||
| 56 (L) | 1 | (L) | 1.36 | millimetres | |||||
| 500 | Cb + 0.68 | ||||||||
| Formula 2 | |||||
| 7000 | 1.36 | millimetres | |||
| Cb + 0.68 | |||||
Cb being taken as not less than 0.68 in the case of each formula.
_
Part II — Timber Freeboards
17. Summer Timber freeboard
The Summer Timber freeboard shall be determined as follows—
There shall first be ascertained the freeboard appropriate to the ship under the provisions of subparagraphs (1), (2)(a), (9) and (10) of paragraph 5 of this Schedule.
Corrections shall be applied to the freeboard so obtained in accordance with the provisions of paragraphs 6 to 10 of this Schedule.
Deductions for the effective length of superstructures only shall be made from the freeboard obtained pursuant to subparagraphs (1) and (2), in accordance with the provisions of paragraph 11(1) and (2)(b) of this Schedule but substituting for the Table “Percentage of Deduction for Type “B” ships” therein the following Table—
| Table | ||||||||||||
| Percentage of deduction for all types of superstructures | Total effective length of superstructures | |||||||||||
| 0 | 0.1 (L) | 0.2 (L) | 0.3 (L) | 0.4 (L) | 0.5 (L) | 0.6 (L) | 0.7 (L) | 0.8 (L) | 0.9 (L) | 1.0 (L) | ||
| 20 | 31 | 42 | 53 | 64 | 70 | 76 | 82 | 88 | 94 | 100 | ||
Corrections shall be applied to the freeboard obtained pursuant to subparagraphs (1), (2) and (3) in accordance with the provisions of paragraphs 12 to 15 of this Schedule, and the freeboard so corrected shall be the Summer Timber freeboard to be assigned to the ship.
18. Other Timber freeboards
The Winter Timber freeboard shall be obtained by adding to the Summer Timber freeboard one thirty-sixth (1/36th) of the summer timber draught of the ship.
The Winter North Atlantic Timber freeboard shall be the same as the Winter North Atlantic freeboard assigned to the ship.
The Tropical Timber freeboard shall be obtained by deducting from the Summer Timber freeboard one forty-eighth (1/48th) of the summer timber draught of the ship.
The Fresh Water Timber freeboard shall, subject to sub-subparagraph (b), be obtained by deducting from the Summer Timber freeboard the quantity— (E.R. 3 of 2021)
| △ | millimetres |
| 4T |
where △ is the displacement in salt water in metric tons at the waterline which will when load lines have been marked on the ship’s side correspond to the Summer Timber load line, and T represents metric tons per centimetre immersion in salt water at that waterline.
In any case in which the displacement at that waterline cannot be ascertained the deduction shall be one forty-eighth (1/48th) of the summer timber draught of the ship.
_
Part III — Other Ships
19.
(Repealed L.N. 47 of 2018)
20.
(Repealed L.N. 47 of 2018)
21. Unmanned barges
The freeboards to be assigned to unmanned barges having on the freeboard deck only small access openings closed by watertight gasketed covers of steel shall be freeboards determined in accordance with the provisions of Part I of this Schedule omitting paragraphs 5 and 16. Such freeboards may be reduced by such amounts not exceeding 25 per cent as the Director may direct in each particular case.
Schedule 6 — Freeboard Tables
[Sch. 5]1.
The following is Freeboard Table A referred to in the definition of tabular freeboard in paragraph 1 of Schedule 5—
| Length of Ship (metres) | Freeboard (millimetres) | Length of Ship (metres) | Freeboard (millimetres) | Length of Ship (metres) | Freeboard (millimetres) | ||||||||||||||||||||||||||||||||||||||||||||
| 24 | 200 | 41 | 344 | 58 | 544 | ||||||||||||||||||||||||||||||||||||||||||||
| 25 | 208 | 42 | 354 | 59 | 559 | ||||||||||||||||||||||||||||||||||||||||||||
| 26 | 217 | 43 | 364 | 60 | 573 | ||||||||||||||||||||||||||||||||||||||||||||
| 27 | 225 | 44 | 374 | 61 | 587 | ||||||||||||||||||||||||||||||||||||||||||||
| 28 | 233 | 45 | 385 | 62 | 600 | ||||||||||||||||||||||||||||||||||||||||||||
| 29 | 242 | 46 | 396 | 63 | 613 | ||||||||||||||||||||||||||||||||||||||||||||
| 30 | 250 | 47 | 408 | 64 | 626 | ||||||||||||||||||||||||||||||||||||||||||||
| 31 | 258 | 48 | 420 | 65 | 639 | ||||||||||||||||||||||||||||||||||||||||||||
| 32 | 267 | 49 | 432 | 66 | 653 | ||||||||||||||||||||||||||||||||||||||||||||
| 33 | 275 | 50 | 443 | 67 | 666 | ||||||||||||||||||||||||||||||||||||||||||||
| 34 | 283 | 51 | 455 | 68 | 680 | ||||||||||||||||||||||||||||||||||||||||||||
| 35 | 292 | 52 | 467 | 69 | 693 | ||||||||||||||||||||||||||||||||||||||||||||
| 36 | 300 | 53 | 478 | 70 | 706 | ||||||||||||||||||||||||||||||||||||||||||||
| 37 | 308 | 54 | 490 | 71 | 720 | ||||||||||||||||||||||||||||||||||||||||||||
| 38 | 316 | 55 | 503 | 72 | 733 | ||||||||||||||||||||||||||||||||||||||||||||
| 39 | 325 | 56 | 516 | 73 | 746 | ||||||||||||||||||||||||||||||||||||||||||||
| 40 | 334 | 57 | 530 | 74 | 760 | ||||||||||||||||||||||||||||||||||||||||||||
| Length of Ship (metres) | Freeboard (millimetres) | Length of Ship (metres) | Freeboard (millimetres) | Length of Ship (metres) | Freeboard (millimetres) | ||||||||||||||||||||||||||||||||||||||||||||
| 75 | 773 | 103 | 1181 | 131 | 1650 | ||||||||||||||||||||||||||||||||||||||||||||
| 76 | 786 | 104 | 1196 | 132 | 1667 | ||||||||||||||||||||||||||||||||||||||||||||
| 77 | 800 | 105 | 1212 | 133 | 1684 | ||||||||||||||||||||||||||||||||||||||||||||
| 78 | 814 | 106 | 1228 | 134 | 1702 | ||||||||||||||||||||||||||||||||||||||||||||
| 79 | 828 | 107 | 1244 | 135 | 1719 | ||||||||||||||||||||||||||||||||||||||||||||
| 80 | 841 | 108 | 1260 | 136 | 1736 | ||||||||||||||||||||||||||||||||||||||||||||
| 81 | 855 | 109 | 1276 | 137 | 1753 | ||||||||||||||||||||||||||||||||||||||||||||
| 82 | 869 | 110 | 1293 | 138 | 1770 | ||||||||||||||||||||||||||||||||||||||||||||
| 83 | 883 | 111 | 1309 | 139 | 1787 | ||||||||||||||||||||||||||||||||||||||||||||
| 84 | 897 | 112 | 1326 | 140 | 1803 | ||||||||||||||||||||||||||||||||||||||||||||
| 85 | 911 | 113 | 1342 | 141 | 1820 | ||||||||||||||||||||||||||||||||||||||||||||
| 86 | 926 | 114 | 1359 | 142 | 1837 | ||||||||||||||||||||||||||||||||||||||||||||
| 87 | 940 | 115 | 1376 | 143 | 1853 | ||||||||||||||||||||||||||||||||||||||||||||
| 88 | 955 | 116 | 1392 | 144 | 1870 | ||||||||||||||||||||||||||||||||||||||||||||
| 89 | 969 | 117 | 1409 | 145 | 1886 | ||||||||||||||||||||||||||||||||||||||||||||
| 90 | 984 | 118 | 1426 | 146 | 1903 | ||||||||||||||||||||||||||||||||||||||||||||
| 91 | 999 | 119 | 1442 | 147 | 1919 | ||||||||||||||||||||||||||||||||||||||||||||
| 92 | 1014 | 120 | 1459 | 148 | 1935 | ||||||||||||||||||||||||||||||||||||||||||||
| 93 | 1029 | 121 | 1476 | 149 | 1952 | ||||||||||||||||||||||||||||||||||||||||||||
| 94 | 1044 | 122 | 1494 | 150 | 1968 | ||||||||||||||||||||||||||||||||||||||||||||
| 95 | 1059 | 123 | 1511 | 151 | 1984 | ||||||||||||||||||||||||||||||||||||||||||||
| 96 | 1074 | 124 | 1528 | 152 | 2000 | ||||||||||||||||||||||||||||||||||||||||||||
| 97 | 1089 | 125 | 1546 | 153 | 2016 | ||||||||||||||||||||||||||||||||||||||||||||
| 98 | 1105 | 126 | 1563 | 154 | 2032 | ||||||||||||||||||||||||||||||||||||||||||||
| 99 | 1120 | 127 | 1580 | 155 | 2048 | ||||||||||||||||||||||||||||||||||||||||||||
| 100 | 1135 | 128 | 1598 | 156 | 2064 | ||||||||||||||||||||||||||||||||||||||||||||
| 101 | 1151 | 129 | 1615 | 157 | 2080 | ||||||||||||||||||||||||||||||||||||||||||||
| 102 | 1166 | 130 | 1632 | 158 | 2096 | ||||||||||||||||||||||||||||||||||||||||||||
| Length of Ship (metres) | Freeboard (millimetres) | Length of Ship (metres) | Freeboard (millimetres) | Length of Ship (metres) | Freeboard (millimetres) | ||||||||||||||||||||||||||||||||||||||||||||
| 159 | 2111 | 187 | 2474 | 215 | 2749 | ||||||||||||||||||||||||||||||||||||||||||||
| 160 | 2126 | 188 | 2486 | 216 | 2758 | ||||||||||||||||||||||||||||||||||||||||||||
| 161 | 2141 | 189 | 2497 | 217 | 2767 | ||||||||||||||||||||||||||||||||||||||||||||
| 162 | 2155 | 190 | 2508 | 218 | 2775 | ||||||||||||||||||||||||||||||||||||||||||||
| 163 | 2169 | 191 | 2519 | 219 | 2784 | ||||||||||||||||||||||||||||||||||||||||||||
| 164 | 2184 | 192 | 2530 | 220 | 2792 | ||||||||||||||||||||||||||||||||||||||||||||
| 165 | 2198 | 193 | 2541 | 221 | 2801 | ||||||||||||||||||||||||||||||||||||||||||||
| 166 | 2212 | 194 | 2552 | 222 | 2809 | ||||||||||||||||||||||||||||||||||||||||||||
| 167 | 2226 | 195 | 2562 | 223 | 2817 | ||||||||||||||||||||||||||||||||||||||||||||
| 168 | 2240 | 196 | 2572 | 224 | 2825 | ||||||||||||||||||||||||||||||||||||||||||||
| 169 | 2254 | 197 | 2582 | 225 | 2833 | ||||||||||||||||||||||||||||||||||||||||||||
| 170 | 2268 | 198 | 2592 | 226 | 2841 | ||||||||||||||||||||||||||||||||||||||||||||
| 171 | 2281 | 199 | 2602 | 227 | 2849 | ||||||||||||||||||||||||||||||||||||||||||||
| 172 | 2294 | 200 | 2612 | 228 | 2857 | ||||||||||||||||||||||||||||||||||||||||||||
| 173 | 2307 | 201 | 2622 | 229 | 2865 | ||||||||||||||||||||||||||||||||||||||||||||
| 174 | 2320 | 202 | 2632 | 230 | 2872 | ||||||||||||||||||||||||||||||||||||||||||||
| 175 | 2332 | 203 | 2641 | 231 | 2880 | ||||||||||||||||||||||||||||||||||||||||||||
| 176 | 2345 | 204 | 2650 | 232 | 2888 | ||||||||||||||||||||||||||||||||||||||||||||
| 177 | 2357 | 205 | 2659 | 233 | 2895 | ||||||||||||||||||||||||||||||||||||||||||||
| 178 | 2369 | 206 | 2669 | 234 | 2903 | ||||||||||||||||||||||||||||||||||||||||||||
| 179 | 2381 | 207 | 2678 | 235 | 2910 | ||||||||||||||||||||||||||||||||||||||||||||
| 180 | 2393 | 208 | 2687 | 236 | 2918 | ||||||||||||||||||||||||||||||||||||||||||||
| 181 | 2405 | 209 | 2696 | 237 | 2925 | ||||||||||||||||||||||||||||||||||||||||||||
| 182 | 2416 | 210 | 2705 | 238 | 2932 | ||||||||||||||||||||||||||||||||||||||||||||
| 183 | 2428 | 211 | 2714 | 239 | 2939 | ||||||||||||||||||||||||||||||||||||||||||||
| 184 | 2440 | 212 | 2723 | 240 | 2946 | ||||||||||||||||||||||||||||||||||||||||||||
| 185 | 2451 | 213 | 2732 | 241 | 2953 | ||||||||||||||||||||||||||||||||||||||||||||
| 186 | 2463 | 214 | 2741 | 242 | 2959 | ||||||||||||||||||||||||||||||||||||||||||||
| Length of Ship (metres) | Freeboard (millimetres) | Length of Ship (metres) | Freeboard (millimetres) | Length of Ship (metres) | Freeboard (millimetres) | ||||||||||||||||||||||||||||||||||||||||||||
| 243 | 2966 | 271 | 3133 | 299 | 3258 | ||||||||||||||||||||||||||||||||||||||||||||
| 244 | 2973 | 272 | 3138 | 300 | 3262 | ||||||||||||||||||||||||||||||||||||||||||||
| 245 | 2979 | 273 | 3143 | 301 | 3266 | ||||||||||||||||||||||||||||||||||||||||||||
| 246 | 2986 | 274 | 3148 | 302 | 3270 | ||||||||||||||||||||||||||||||||||||||||||||
| 247 | 2993 | 275 | 3153 | 303 | 3274 | ||||||||||||||||||||||||||||||||||||||||||||
| 248 | 3000 | 276 | 3158 | 304 | 3278 | ||||||||||||||||||||||||||||||||||||||||||||
| 249 | 3006 | 277 | 3163 | 305 | 3281 | ||||||||||||||||||||||||||||||||||||||||||||
| 250 | 3012 | 278 | 3167 | 306 | 3285 | ||||||||||||||||||||||||||||||||||||||||||||
| 251 | 3018 | 279 | 3172 | 307 | 3288 | ||||||||||||||||||||||||||||||||||||||||||||
| 252 | 3024 | 280 | 3176 | 308 | 3292 | ||||||||||||||||||||||||||||||||||||||||||||
| 253 | 3030 | 281 | 3181 | 309 | 3295 | ||||||||||||||||||||||||||||||||||||||||||||
| 254 | 3036 | 282 | 3185 | 310 | 3298 | ||||||||||||||||||||||||||||||||||||||||||||
| 255 | 3042 | 283 | 3189 | 311 | 3302 | ||||||||||||||||||||||||||||||||||||||||||||
| 256 | 3048 | 284 | 3194 | 312 | 3305 | ||||||||||||||||||||||||||||||||||||||||||||
| 257 | 3054 | 285 | 3198 | 313 | 3308 | ||||||||||||||||||||||||||||||||||||||||||||
| 258 | 3060 | 286 | 3202 | 314 | 3312 | ||||||||||||||||||||||||||||||||||||||||||||
| 259 | 3066 | 287 | 3207 | 315 | 3315 | ||||||||||||||||||||||||||||||||||||||||||||
| 260 | 3072 | 288 | 3211 | 316 | 3318 | ||||||||||||||||||||||||||||||||||||||||||||
| 261 | 3078 | 289 | 3215 | 317 | 3322 | ||||||||||||||||||||||||||||||||||||||||||||
| 262 | 3084 | 290 | 3220 | 318 | 3325 | ||||||||||||||||||||||||||||||||||||||||||||
| 263 | 3089 | 291 | 3224 | 319 | 3328 | ||||||||||||||||||||||||||||||||||||||||||||
| 264 | 3095 | 292 | 3228 | 320 | 3331 | ||||||||||||||||||||||||||||||||||||||||||||
| 265 | 3101 | 293 | 3233 | 321 | 3334 | ||||||||||||||||||||||||||||||||||||||||||||
| 266 | 3106 | 294 | 3237 | 322 | 3337 | ||||||||||||||||||||||||||||||||||||||||||||
| 267 | 3112 | 295 | 3241 | 323 | 3339 | ||||||||||||||||||||||||||||||||||||||||||||
| 268 | 3117 | 296 | 3246 | 324 | 3342 | ||||||||||||||||||||||||||||||||||||||||||||
| 269 | 3123 | 297 | 3250 | 325 | 3345 | ||||||||||||||||||||||||||||||||||||||||||||
| 270 | 3128 | 298 | 3254 | 326 | 3347 | ||||||||||||||||||||||||||||||||||||||||||||
| Length of Ship (metres) | Freeboard (millimetres) | Length of Ship (metres) | Freeboard (millimetres) | Length of Ship (metres) | Freeboard (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. | |||||||||||||||||||||||||||||||||||||||||||||||||
2.
The following is Freeboard Table B referred to in the definition of tabular freeboard in paragraph 1 of Schedule 5—
| Length of Ship (metres) | Freeboard (millimetres) | Length of Ship (metres) | Freeboard (millimetres) | Length of Ship (metres) | Freeboard (millimetres) | ||||||||||||||||||||||||||||||||||||||||||||
| 24 | 200 | 47 | 408 | 70 | 721 | ||||||||||||||||||||||||||||||||||||||||||||
| 25 | 208 | 48 | 420 | 71 | 738 | ||||||||||||||||||||||||||||||||||||||||||||
| 26 | 217 | 49 | 432 | 72 | 754 | ||||||||||||||||||||||||||||||||||||||||||||
| 27 | 225 | 50 | 443 | 73 | 769 | ||||||||||||||||||||||||||||||||||||||||||||
| 28 | 233 | 51 | 455 | 74 | 784 | ||||||||||||||||||||||||||||||||||||||||||||
| 29 | 242 | 52 | 467 | 75 | 800 | ||||||||||||||||||||||||||||||||||||||||||||
| 30 | 250 | 53 | 478 | 76 | 816 | ||||||||||||||||||||||||||||||||||||||||||||
| 31 | 258 | 54 | 490 | 77 | 833 | ||||||||||||||||||||||||||||||||||||||||||||
| 32 | 267 | 55 | 503 | 78 | 850 | ||||||||||||||||||||||||||||||||||||||||||||
| 33 | 275 | 56 | 516 | 79 | 868 | ||||||||||||||||||||||||||||||||||||||||||||
| 34 | 283 | 57 | 530 | 80 | 887 | ||||||||||||||||||||||||||||||||||||||||||||
| 35 | 292 | 58 | 544 | 81 | 905 | ||||||||||||||||||||||||||||||||||||||||||||
| 36 | 300 | 59 | 559 | 82 | 923 | ||||||||||||||||||||||||||||||||||||||||||||
| 37 | 308 | 60 | 573 | 83 | 942 | ||||||||||||||||||||||||||||||||||||||||||||
| 38 | 316 | 61 | 587 | 84 | 960 | ||||||||||||||||||||||||||||||||||||||||||||
| 39 | 325 | 62 | 601 | 85 | 978 | ||||||||||||||||||||||||||||||||||||||||||||
| 40 | 334 | 63 | 615 | 86 | 996 | ||||||||||||||||||||||||||||||||||||||||||||
| 41 | 344 | 64 | 629 | 87 | 1015 | ||||||||||||||||||||||||||||||||||||||||||||
| 42 | 354 | 65 | 644 | 88 | 1034 | ||||||||||||||||||||||||||||||||||||||||||||
| 43 | 364 | 66 | 659 | 89 | 1054 | ||||||||||||||||||||||||||||||||||||||||||||
| 44 | 374 | 67 | 674 | 90 | 1075 | ||||||||||||||||||||||||||||||||||||||||||||
| 45 | 385 | 68 | 689 | 91 | 1096 | ||||||||||||||||||||||||||||||||||||||||||||
| 46 | 396 | 69 | 705 | 92 | 1116 | ||||||||||||||||||||||||||||||||||||||||||||
| Length of Ship (metres) | Freeboard (millimetres) | Length of Ship (metres) | Freeboard (millimetres) | Length of Ship (metres) | Freeboard (millimetres) | ||||||||||||||||||||||||||||||||||||||||||||
| 93 | 1135 | 121 | 1709 | 149 | 2293 | ||||||||||||||||||||||||||||||||||||||||||||
| 94 | 1154 | 122 | 1729 | 150 | 2315 | ||||||||||||||||||||||||||||||||||||||||||||
| 95 | 1172 | 123 | 1750 | 151 | 2334 | ||||||||||||||||||||||||||||||||||||||||||||
| 96 | 1190 | 124 | 1771 | 152 | 2354 | ||||||||||||||||||||||||||||||||||||||||||||
| 97 | 1209 | 125 | 1793 | 153 | 2375 | ||||||||||||||||||||||||||||||||||||||||||||
| 98 | 1229 | 126 | 1815 | 154 | 2396 | ||||||||||||||||||||||||||||||||||||||||||||
| 99 | 1250 | 127 | 1837 | 155 | 2418 | ||||||||||||||||||||||||||||||||||||||||||||
| 100 | 1271 | 128 | 1859 | 156 | 2440 | ||||||||||||||||||||||||||||||||||||||||||||
| 101 | 1293 | 129 | 1880 | 157 | 2460 | ||||||||||||||||||||||||||||||||||||||||||||
| 102 | 1315 | 130 | 1901 | 158 | 2480 | ||||||||||||||||||||||||||||||||||||||||||||
| 103 | 1337 | 131 | 1921 | 159 | 2500 | ||||||||||||||||||||||||||||||||||||||||||||
| 104 | 1359 | 132 | 1940 | 160 | 2520 | ||||||||||||||||||||||||||||||||||||||||||||
| 105 | 1380 | 133 | 1959 | 161 | 2540 | ||||||||||||||||||||||||||||||||||||||||||||
| 106 | 1401 | 134 | 1979 | 162 | 2560 | ||||||||||||||||||||||||||||||||||||||||||||
| 107 | 1421 | 135 | 2000 | 163 | 2580 | ||||||||||||||||||||||||||||||||||||||||||||
| 108 | 1440 | 136 | 2021 | 164 | 2600 | ||||||||||||||||||||||||||||||||||||||||||||
| 109 | 1459 | 137 | 2043 | 165 | 2620 | ||||||||||||||||||||||||||||||||||||||||||||
| 110 | 1479 | 138 | 2065 | 166 | 2640 | ||||||||||||||||||||||||||||||||||||||||||||
| 111 | 1500 | 139 | 2087 | 167 | 2660 | ||||||||||||||||||||||||||||||||||||||||||||
| 112 | 1521 | 140 | 2109 | 168 | 2680 | ||||||||||||||||||||||||||||||||||||||||||||
| 113 | 1543 | 141 | 2130 | 169 | 2698 | ||||||||||||||||||||||||||||||||||||||||||||
| 114 | 1565 | 142 | 2151 | 170 | 2716 | ||||||||||||||||||||||||||||||||||||||||||||
| 115 | 1587 | 143 | 2171 | 171 | 2735 | ||||||||||||||||||||||||||||||||||||||||||||
| 116 | 1609 | 144 | 2190 | 172 | 2754 | ||||||||||||||||||||||||||||||||||||||||||||
| 117 | 1630 | 145 | 2209 | 173 | 2774 | ||||||||||||||||||||||||||||||||||||||||||||
| 118 | 1651 | 146 | 2229 | 174 | 2795 | ||||||||||||||||||||||||||||||||||||||||||||
| 119 | 1671 | 147 | 2250 | 175 | 2815 | ||||||||||||||||||||||||||||||||||||||||||||
| 120 | 1690 | 148 | 2271 | 176 | 2835 | ||||||||||||||||||||||||||||||||||||||||||||
| Length of Ship (metres) | Freeboard (millimetres) | Length of Ship (metres) | Freeboard (millimetres) | Length of Ship (metres) | Freeboard (millimetres) | ||||||||||||||||||||||||||||||||||||||||||||
| 177 | 2855 | 205 | 3347 | 233 | 3780 | ||||||||||||||||||||||||||||||||||||||||||||
| 178 | 2875 | 206 | 3363 | 234 | 3795 | ||||||||||||||||||||||||||||||||||||||||||||
| 179 | 2895 | 207 | 3380 | 235 | 3808 | ||||||||||||||||||||||||||||||||||||||||||||
| 180 | 2915 | 208 | 3397 | 236 | 3821 | ||||||||||||||||||||||||||||||||||||||||||||
| 181 | 2933 | 209 | 3413 | 237 | 3835 | ||||||||||||||||||||||||||||||||||||||||||||
| 182 | 2952 | 210 | 3430 | 238 | 3849 | ||||||||||||||||||||||||||||||||||||||||||||
| 183 | 2970 | 211 | 3445 | 239 | 3864 | ||||||||||||||||||||||||||||||||||||||||||||
| 184 | 2988 | 212 | 3460 | 240 | 3880 | ||||||||||||||||||||||||||||||||||||||||||||
| 185 | 3007 | 213 | 3475 | 241 | 3893 | ||||||||||||||||||||||||||||||||||||||||||||
| 186 | 3025 | 214 | 3490 | 242 | 3906 | ||||||||||||||||||||||||||||||||||||||||||||
| 187 | 3044 | 215 | 3505 | 243 | 3920 | ||||||||||||||||||||||||||||||||||||||||||||
| 188 | 3062 | 216 | 3520 | 244 | 3934 | ||||||||||||||||||||||||||||||||||||||||||||
| 189 | 3080 | 217 | 3537 | 245 | 3949 | ||||||||||||||||||||||||||||||||||||||||||||
| 190 | 3098 | 218 | 3554 | 246 | 3965 | ||||||||||||||||||||||||||||||||||||||||||||
| 191 | 3116 | 219 | 3570 | 247 | 3978 | ||||||||||||||||||||||||||||||||||||||||||||
| 192 | 3134 | 220 | 3586 | 248 | 3992 | ||||||||||||||||||||||||||||||||||||||||||||
| 193 | 3151 | 221 | 3601 | 249 | 4005 | ||||||||||||||||||||||||||||||||||||||||||||
| 194 | 3167 | 222 | 3615 | 250 | 4018 | ||||||||||||||||||||||||||||||||||||||||||||
| 195 | 3185 | 223 | 3630 | 251 | 4032 | ||||||||||||||||||||||||||||||||||||||||||||
| 196 | 3202 | 224 | 3645 | 252 | 4045 | ||||||||||||||||||||||||||||||||||||||||||||
| 197 | 3219 | 225 | 3660 | 253 | 4058 | ||||||||||||||||||||||||||||||||||||||||||||
| 198 | 3235 | 226 | 3675 | 254 | 4072 | ||||||||||||||||||||||||||||||||||||||||||||
| 199 | 3249 | 227 | 3690 | 255 | 4085 | ||||||||||||||||||||||||||||||||||||||||||||
| 200 | 3264 | 228 | 3705 | 256 | 4098 | ||||||||||||||||||||||||||||||||||||||||||||
| 201 | 3280 | 229 | 3720 | 257 | 4112 | ||||||||||||||||||||||||||||||||||||||||||||
| 202 | 3296 | 230 | 3735 | 258 | 4125 | ||||||||||||||||||||||||||||||||||||||||||||
| 203 | 3313 | 231 | 3750 | 259 | 4139 | ||||||||||||||||||||||||||||||||||||||||||||
| 204 | 3330 | 232 | 3765 | 260 | 4152 | ||||||||||||||||||||||||||||||||||||||||||||
| Length of Ship (metres) | Freeboard (millimetres) | Length of Ship (metres) | Freeboard (millimetres) | Length of Ship (metres) | Freeboard (millimetres) | ||||||||||||||||||||||||||||||||||||||||||||
| 261 | 4165 | 289 | 4502 | 317 | 4812 | ||||||||||||||||||||||||||||||||||||||||||||
| 262 | 4177 | 290 | 4513 | 318 | 4823 | ||||||||||||||||||||||||||||||||||||||||||||
| 263 | 4189 | 291 | 4525 | 319 | 4834 | ||||||||||||||||||||||||||||||||||||||||||||
| 264 | 4201 | 292 | 4537 | 320 | 4844 | ||||||||||||||||||||||||||||||||||||||||||||
| 265 | 4214 | 293 | 4548 | 321 | 4855 | ||||||||||||||||||||||||||||||||||||||||||||
| 266 | 4227 | 294 | 4560 | 322 | 4866 | ||||||||||||||||||||||||||||||||||||||||||||
| 267 | 4240 | 295 | 4572 | 323 | 4878 | ||||||||||||||||||||||||||||||||||||||||||||
| 268 | 4252 | 296 | 4583 | 324 | 4890 | ||||||||||||||||||||||||||||||||||||||||||||
| 269 | 4264 | 297 | 4595 | 325 | 4899 | ||||||||||||||||||||||||||||||||||||||||||||
| 270 | 4276 | 298 | 4607 | 326 | 4909 | ||||||||||||||||||||||||||||||||||||||||||||
| 271 | 4289 | 299 | 4618 | 327 | 4920 | ||||||||||||||||||||||||||||||||||||||||||||
| 272 | 4302 | 300 | 4630 | 328 | 4931 | ||||||||||||||||||||||||||||||||||||||||||||
| 273 | 4315 | 301 | 4642 | 329 | 4943 | ||||||||||||||||||||||||||||||||||||||||||||
| 274 | 4327 | 302 | 4654 | 330 | 4955 | ||||||||||||||||||||||||||||||||||||||||||||
| 275 | 4339 | 303 | 4665 | 331 | 4965 | ||||||||||||||||||||||||||||||||||||||||||||
| 276 | 4350 | 304 | 4676 | 332 | 4975 | ||||||||||||||||||||||||||||||||||||||||||||
| 277 | 4362 | 305 | 4686 | 333 | 4985 | ||||||||||||||||||||||||||||||||||||||||||||
| 278 | 4373 | 306 | 4695 | 334 | 4995 | ||||||||||||||||||||||||||||||||||||||||||||
| 279 | 4385 | 307 | 4704 | 335 | 5005 | ||||||||||||||||||||||||||||||||||||||||||||
| 280 | 4397 | 308 | 4714 | 336 | 5015 | ||||||||||||||||||||||||||||||||||||||||||||
| 281 | 4408 | 309 | 4725 | 337 | 5025 | ||||||||||||||||||||||||||||||||||||||||||||
| 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 | ||||||||||||||||||||||||||||||||||||||||||||
| Length of Ship (metres) | Freeboard (millimetres) | Length of Ship (metres) | Freeboard (millimetres) | Length of Ship (metres) | Freeboard (millimetres) | ||||||||||||||||||||||||||||||||||||||||||||
| 345 | 5108 | 352 | 5180 | 359 | 5250 | ||||||||||||||||||||||||||||||||||||||||||||
| 346 | 5119 | 353 | 5190 | 360 | 5260 | ||||||||||||||||||||||||||||||||||||||||||||
| 347 | 5130 | 354 | 5200 | 361 | 5268 | ||||||||||||||||||||||||||||||||||||||||||||
| 348 | 5140 | 355 | 5210 | 362 | 5276 | ||||||||||||||||||||||||||||||||||||||||||||
| 349 | 5150 | 356 | 5220 | 363 | 5285 | ||||||||||||||||||||||||||||||||||||||||||||
| 350 | 5160 | 357 | 5230 | 364 | 5294 | ||||||||||||||||||||||||||||||||||||||||||||
| 351 | 5170 | 358 | 5240 | 365 | 5303 | ||||||||||||||||||||||||||||||||||||||||||||
| Freeboards at intermediate lengths of ship shall be obtained by linear interpolation. | |||||||||||||||||||||||||||||||||||||||||||||||||
Schedule 7 — Information as to Stability of Ships
[reg. 30]The information relating to the stability of a ship to be provided for the master pursuant to regulation 30 of these regulations shall include particulars appropriate to the ship of the matters specified below. Such particulars shall be in the form of a statement unless the contrary is indicated.
1.
The ship’s name, official number, port of registry, gross and register tonnages, principal dimensions, displacement, deadweight and draught to the Summer load line.
2.
A profile view and, if the Assigning Authority so require in a particular case, plan views of the ship drawn to scale showing with their names all compartments, tanks, storerooms and crew and passenger accommodation spaces, and also showing the mid-length position. (L.N. 47 of 2018)
3.
The capacity and the centre of gravity (longitudinally and vertically) of every compartment available for the carriage of cargo, fuel, stores, feed water, domestic water or water ballast.In the case of a vehicle ferry, the vertical centre of gravity of compartments for the carriage of vehicles shall be based on the estimated centres of gravity of the vehicles and not on the volumetric centre of the compartments.
4.
The estimated total weight of (a) passengers and their effects and (b) crew and their effects, and the centre of gravity (longitudinally and vertically) of each such total weight. In assessing such weight and centres of gravity— (L.N. 47 of 2018)
passengers and crew must be assumed to be distributed about the ship in the spaces they will normally occupy, including the highest decks to which either or both have access; and
for a ship constructed on or after 1 July 2010—the assessment must also be based on the assumptions set out in paragraph 3.1, Chapter 3, Part A of the 2008 IS Code. (L.N. 47 of 2018)
5.
The estimated weight and the disposition and centre of gravity of the maximum amount of deck cargo which the ship may reasonably be expected to carry on an exposed deck. The estimated weight shall include in the case of deck cargo likely to absorb water the estimated weight of water likely to be so absorbed and allowed for in arrival conditions, such weight in the case of timber deck cargo being— (L.N. 47 of 2018)
taken to be 15% of the weight of the cargo; or
determined in accordance with the Code of Safe Practice for Ships Carrying Timber Deck Cargoes, 2011. (L.N. 47 of 2018)
6.
A diagram or scale showing the load line mark and load lines with particulars of the corresponding freeboards, and also showing the displacement, metric tons per centimetre immersion, and deadweight corresponding in each case to a range of mean draughts extending between the waterline representing the deepest load line and the waterline of the ship in light condition.
7.
A diagram or tabular statement showing the hydrostatic particulars of the ship, including—
the heights of the transverse metacentre; and
the values of the moment to change trim one centimetre,
for a range of mean draughts extending at least between the waterline representing the deepest load line and the waterline of the ship in light condition. Where a tabular statement is used, the intervals between such draughts shall be sufficiently close to permit accurate interpolation. In the case of ships having raked keels, the same datum for the heights of centres of buoyancy and metacentres shall be used as for the centres of gravity referred to in paragraphs 3, 4 and 5. (E.R. 3 of 2021)
8.
The effect on stability of free surface in each tank in the ship in which liquids may be carried, including an example to show how the metacentric height is to be corrected.
9.
A diagram or table showing cross curves of stability indicating the height of the assumed axis from which the Righting Levers are measured and the trim which has been assumed. In the case of ships having raked keels, where a datum other than the top of keel has been used the position of the assumed axis shall be clearly defined. (L.N. 47 of 2018)
Subject to the following subparagraph (3), only (a) enclosed superstructures and (b) the following efficient trunks are to be taken into account in deriving such curves— (L.N. 47 of 2018)
for a pre-2005 ship—efficient trunks as defined in paragraph 10 of Schedule 5;
for a post-2005 ship—efficient trunks as defined in Chapter III of Annex I. (L.N. 47 of 2018)
The following structures may be taken into account in deriving such curves if the Assigning Authority is satisfied that their location, integrity and means of closure will contribute to the ship’s stability— (L.N. 47 of 2018)
superstructures located above the superstructure deck;
deckhouses on or above the freeboard deck, whether wholly or in part only;
hatchway structures on or above the freeboard deck.
Additionally, in the case of a ship carrying timber deck cargo, the volume of the timber deck cargo, or a part thereof, may with the Assigning Authority’s approval be taken into account in deriving a supplementary curve of stability appropriate to the ship when carrying such cargo. (L.N. 47 of 2018)
An example shall be given showing how to obtain a curve of Righting Levers (GZ) from the cross curves of stability.
Where the buoyancy of a superstructure is to be taken into account in the calculation of stability information to be supplied in the case of a vehicle ferry or similar ship having bow doors, ship’s side doors or stern doors, there shall be included in the stability information a specific statement that such doors must be secured weathertight before the ship proceeds to sea and that the cross curves of stability are based upon the assumption that such doors have been so secured.
10.
The diagram and statements referred to in subparagraph (2) shall be provided separately for each of the following conditions of the ship—
Light condition. If the ship has permanent ballast, such diagram and statements shall be provided for the ship in light condition both (i) with such ballast, and (ii) without such ballast.
Ballast condition, both (i) on departure, and (ii) on arrival, it being assumed for the purpose of the latter in this and the following subparagraphs that oil fuel, fresh water, consumable stores and the like are reduced to 10 per cent of their capacity.
Condition both (i) on departure, and (ii) on arrival, when loaded to the Summer load line with cargo filling all spaces available for cargo, cargo for this purpose being taken to be homogeneous cargo except where this is clearly inappropriate, for example in the case of cargo spaces in a ship which are intended to be used exclusively for the carriage of vehicles or of containers.
Service loaded conditions, both (i) on departure and (ii) on arrival.
A profile diagram of the ship drawn to a suitable small scale showing the disposition of all components of the deadweight.
A statement showing the lightweight, the disposition and the total weights of all components of the deadweight, the displacement, the corresponding positions of the centre of gravity, the metacentre and also the metacentric height (GM).
A diagram showing a curve of Righting Levers (GZ) derived from the cross curves of stability referred to in paragraph 9. Where credit is shown for the buoyancy of a timber deck cargo the curve of Righting Levers (GZ) must be drawn both with and without this credit.
The metacentric height and the curve of Righting Levers (GZ) shall be corrected for liquid free surface.
Where there is a significant amount of trim in any of the conditions referred to in subparagraph (1) the metacentric height and the curve of Righting Levers (GZ) may be required to be determined from the trimmed waterline.
If in the opinion of the Assigning Authority the stability characteristics in either or both of the conditions referred to in subparagraph (1)(c) are not satisfactory, such conditions shall be marked accordingly and an appropriate warning to the master shall be inserted. (L.N. 47 of 2018)
11.
Where special procedures such as partly filling or completely filling particular spaces designated for cargo, fuel, fresh water or other purposes are necessary to maintain adequate stability, a statement of instructions as to the appropriate procedure in each case.
12.
A copy of the report on the inclining test and of the calculation therefrom of the light condition particulars.