PART I

General

• • 1 (1) On every ship the cargo and ballast shall be stowed in such a manner as to ensure that the ship is sufficiently stable and is not subjected to excessive structural stress.

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

Application

• • 2 (1) Subject to subsections (5) and (6), ships with mechanical means of propulsion or lighters, barges or other ships without independent means of propulsion, shall be assigned freeboards in accordance with the provisions of Regulations 1-40 inclusive.

  • (2) Ships carrying timber deck cargoes may be assigned, in addition to the freeboards prescribed in paragraph (1) of this Regulation, timber freeboards in accordance with the provisions of Regulations 41-45 inclusive.

  • (3) Ships designed to carry sail, whether as the sole means of propulsion or as a supplementary means, and tugs, shall be assigned freeboards in accordance with the provisions of Regulations 1-40 inclusive. Such additional freeboard shall be required as determined by the Administration.

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

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

  • (6) The Board may assign to any dredger, sandsucker, open hopper barge or other ship of special design a freeboard that is less than the freeboard calculated in accordance with Part III of this Schedule, or partly or wholly exempt such a ship from the provisions of Regulation 14, if the ship

    • (a) is engaged in voyages that are not international voyages;

    • (b) meets the requirements for the issue of a Local Load Line Certificate; and

    • (c) is of such design and stability that such lesser freeboard or such exemption, as the case may be, will not adversely affect its safety.

Definitions of Terms Used in the Schedules

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

  • (2) Perpendiculars. The forward and after perpendiculars shall be taken at the forward and after ends of the length (L). The forward perpendicular shall coincide with the foreside of the stem on the water line on which the length is measured.

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

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

  • (5) Moulded Depth.

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

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

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

  • (6) Depth for Freeboard (D).

    • (a) The depth for freeboard (D) is the moulded depth amidships, plus the thickness of the freeboard deck stringer plate, where fitted, plus [T(L-S)]/L if the exposed freeboard deck is sheathed, where

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

      • S is the total length of superstructures as defined in paragraph (9)(d).

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

  • (7) Block Coefficient. The block coefficient (C_b) is given by:

    Footnote  ^*C_b= ?/L.B.d₁;

    where

    ?

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

    d₁

    is 85 per cent of the least moulded depth.

    • Return to footnote ^*For the purposes of this equation, the "?" represents the “vector differential” symbol.

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

  • (9) Superstructure.

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

    • (b) An enclosed superstructure is a superstructure with:

      • (i) enclosing bulkheads of efficient construction,

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

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

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

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

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

  • (10) Flush Deck Ship. A flush deck ship os one which has no superstructure on the freeboard deck.

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

Deck Line

• 4 The deck line is a horizontal line 300 mm in length and 23 mm in breadth. It shall be marked amidships on each side of the ship, and its upper edge shall normally pass through the point where the continuation outwards of the upper surface of the freeboard deck intersects the outer surface of the shell (as illustrated in Figure 1), provided that the deck line may be placed with reference to another fixed point on the ship on condition that the freeboard is correspondingly corrected. The location of the reference point and the identification of the freeboard deck shall in all cases be indicated on the International Load Line Certificate (1966).

Load Line Mark

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

Lines to be used with the Load Line Mark

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

  • (2) The following load lines shall be used:

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

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

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

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

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

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

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

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

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

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

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

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

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

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

    FIG. 1. DECK LINE

    GRAPHIC IS NOT DISPLAYED, SEE C.R.C., C. 1441, P. 12518

    FIG. 2. LOAD LINE MARKS AND LINES TO BE USED WITH THIS MARK

    GRAPHIC IS NOT DISPLAYED, SEE C.R.C., C. 1441, P. 12518

    FIG. 3. TIMBER LOAD LINE MARK AND LINES TO BE USED WITH THIS MARK

    GRAPHIC IS NOT DISPLAYED, SEE SOR/82-971, S. 1

    FIG. 4. LOAD LINE MARK ON SAILING SHIPS AND LINES TO BE USED WITH THIS MARK

    GRAPHIC IS NOT DISPLAYED, SEE C.R.C., C. 1441, P. 12518

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

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

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

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

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

Mark of Assigning Authority

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

Details of Marking

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

Verification of Marks

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

PART IIConditions of Assignment of Freeboard

Information to be supplied to the Master

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

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

Superstructure End Bulkheads

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

Doors

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

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

Position of Hatchways, Doorways and Ventilators

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

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

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

Cargo and other Hatchways

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

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

Hatchways Closed by Portable Covers and Secured Watertight by Tarpaulins and Battening Devices

Hatchway Coamings

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

    600 mm if in position 1

    450 mm if in position 2.

  Hatchway Covers

  • (2) The width of each bearing surface for hatchway covers shall be at least 65 mm.

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

  • (4) Where covers are made of mild steel, the strength shall be calculated with assumed loads not less than 17 kPa on hatchways in position 1, and not less than 12.75 kPa on hatchways in position 2, and the product of the maximum stress thus calculated and the factor 4.25 shall not exceed the minimum ultimate strength of the material. They shall be so designed as to limit the deflection to not more than 0.0028 times the span under these loads.

  • (5) The assumed loads on hatchways in position 1 may be reduced to 9.8 kPa for ships of 24 m in length and shall be not less than 17 kPa for ships of 100 m in length. The corresponding loads on hatchways in position 2 may be reduced to 7.4 kPa and 12.75 kPa respectively. In all cases values at intermediate lengths shall be obtained by linear interpolation.

  Portable Beams

  • (6) Where portable beams for supporting hatchway covers are made of mild steel the strength shall be calculated with assumed loads not less than 17 kPa on hatchways in position 1 and not less than 12.75 kPa on hatchways in position 2 and the product of the maximum stress thus calculated and the factor 5 shall not exceed the minimum ultimate strength of the material. They shall be so designed as to limit the deflection to not more than 0.0022 times the span under these loads. For ships of not more than 100 m in length the requirements of subsection (5) of this Regulation are applicable.

  Pontoon Covers

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

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

  Carriers or Sockets

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

  Cleats

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

  Battens and Wedges

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

  Tarpaulins

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

  Security of Hatchway Covers

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

Hatchways closed by Weathertight Covers of Steel or other equivalent material fitted with Gaskets and Clamping Devices

Hatchway Coamings

• • 16 (1) At positions 1 and 2 the height above the deck of hatchway coamings fitted with weathertight hatch covers of steel or other equivalent material fitted with gaskets and clamping devices shall be as specified in Regulation 15(1). The height of these coamings may be reduced, or the coamings omitted entirely, on condition that the Administration is satisfied that the safety of the ship is not thereby impaired in any sea conditions. Where coamings are provided they shall be of substantial construction.

  Weathertight Covers

  • (2) Where weathertight covers are of mild steel, the strength shall be calculated with assumed loads not less than 17 kPa on hatchways in position 1, and not less than 12.75 kPa on hatchways in position 2, and the product of the maximum stress thus calculated and the factor of 4.25 shall not exceed the minimum ultimate strength of the material. They shall be so designed as to limit the deflection to not more than 0.0028 times the span under these loads. Mild steel plating forming the tops of covers shall be not less in thickness than one per cent of the spacing of stiffeners or 6 mm if that be greater. The provisions of Regulation 15(5) are applicable for ships of not more than 100 m in length.

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

  Means for Securing Weathertightness

  • (4) The means for securing and maintaining weathertightness shall be to the satisfaction of the Administration. The arrangements shall ensure that the tightness can be maintained in any sea conditions, and for this purpose tests for tightness shall be required at the initial survey, and may be required at periodical surveys and at annual inspections or at more frequent intervals.

Machinery Space Openings

• • 17 (1) Machinery space openings in position 1 or 2 shall be properly framed and efficiently enclosed by steel casings of ample strength, and where the casings are not protected by other structures their strength shall be specially considered. Access openings in such casings shall be fitted with doors complying with the requirements of Regulation 12(1), the sills of which shall be at least 600 mm above the deck if in position 1, and at least 380 mm above the deck if in position 2. Other openings in such casings shall be fitted with equivalent covers, permanently attached in their proper positions.

  • (2) Coamings of any fiddley, funnel or machinery space ventilator in an exposed position on the freeboard or superstructure deck shall be as high above the deck as is reasonable and practicable. Fiddley openings shall be fitted with strong covers of steel or other equivalent material permanently attached in their proper positions and capable of being secured weathertight.

Miscellaneous Openings in Freeboard and Superstructure Decks

• • 18 (1) Manholes and flush scuttles in position 1 or 2 or within superstructures other than enclosed superstructures shall be closed by substantial covers capable of being made watertight. Unless secured by closely spaced bolts, the covers shall be permanently attached.

  • (2) Openings in freeboard decks other than hatchways, machinery space openings, manholes and flush scuttles shall be protected by an enclosed superstructure, or by a deckhouse or companionway of equivalent strength and weathertightness. Any such opening in an exposed superstructure deck or in the top of a deckhouse on the freeboard deck which gives access to a space below the freeboard deck or a space within an enclosed superstructure shall be protected by an efficient deckhouse or companionway. Doorways in such deckhouses or companionways shall be fitted with doors complying with the requirements of Regulation 12(1).

  • (3) In position 1 the height above the deck of sills to the doorways in companionways shall be at least 600 mm. In position 2 it shall be at least 380 mm.

Ventilators

• • 19 (1) Ventilators in position 1 or 2 to spaces below freeboard decks or decks of enclosed superstructures shall have coamings of steel or other equivalent material, substantially constructed and efficiently connected to the deck. Where the coaming of any ventilator exceeds 900 mm in height it shall be specially supported.

  • (2) Ventilators passing through superstructures other than enclosed superstructures shall have substantially constructed coamings of steel or other equivalent material at the freeboard deck.

  • (3) Ventilators in position 1 the coamings of which extend to more than 4.5 m above the deck, and in position 2 the coamings of which extend to more than 2.3 m above the deck, need not be fitted with closing arrangements unless specifically required by the Administration.

  • (4) Except as provided in subsection (3) of this Regulation, ventilator openings shall be provided with efficient weathertight closing appliances. In ships of not more than 100 m in length the closing appliances shall be permanently attached; where not so provided in other ships, they shall be conveniently stowed near the ventilators to which they are to be fitted. Ventilators in position 1 shall have coamings of a height of at least 900 mm above the deck; in position 2 the coamings shall be of a height at least 760 mm above the deck.

  • (5) In exposed positions, the height of coamings may be required to be increased to the satisfaction of the Administration.

Air Pipes

• 20 Where air pipes to ballast and other tanks extend above the freeboard or superstructure decks, the exposed parts of the pipes shall be of substantial construction; the height from the deck to the point where water may have access below shall be at least 760 mm on the freeboard deck and 450 mm on the superstructure deck. Where these heights may interfere with the working of the ship, a lower height may be approved, provided the Administration is satisfied that the closing arrangements and other circumstances justify a lower height. Satisfactory means permanently attached, shall be provided for closing the openings of the air pipes.

Cargo Ports and other Similar Openings

• • 21 (1) Cargo ports and other similar openings in the sides of ships below the freeboard deck shall be fitted with doors so designed as to ensure watertightness and structural integrity commensurate with the surrounding shell plating. The number of such openings shall be the minimum compatible with the design and proper working of the ship.

  • (2) Unless permitted by the Administration, the lower edge of such openings shall not be below a line drawn parallel to the freeboard deck at side, which has at its lowest point the upper edge of the uppermost load line.

Scuppers, Inlets and Discharges

• • 22 (1) Discharges led through the shell either from spaces below the freeboard deck or from within superstructures and deckhouses on the freeboard deck fitted with doors complying with the requirements of Regulation 12 shall be fitted with efficient and accessible means for preventing water from passing inboard. Normally each separate discharge shall have one automatic non-return valve with a positive means of closing it from a position above the freeboard deck. Where, however, the vertical distance from the summer load water line to the inboard end of the discharge pipe exceeds 0.01 L, the discharge may have two automatic non-return valves without positive means of closing, provided that the inboard valve is always accessible for examination under service conditions; where that vertical distance exceeds 0.02 L a single automatic non-return valve without positive means of closing may be accepted subject to the approval of the Administration. The means for operating the positive action valve shall be readily accessible and provided with an indicator showing whether the valve is open or closed.

  • (2) In manned machinery spaces, main and auxiliary sea inlets and discharges in connection with the operation of machinery may be controlled locally. The controls shall be readily accessible and shall be provided with indicators showing whether the valves are open or closed.

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

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

  • (5) All valves and shell fittings required by this Regulation shall be of steel, bronze or other approved ductile material. Valves of ordinary cast iron or similar material are not acceptable. All pipes to which this Regulation refers shall be of steel or other equivalent material to the satisfaction of the Administration.

Side Scuttles

• • 23 (1) Side scuttles to spaces below the freeboard deck or to spaces within enclosed superstructures shall be fitted with efficient hinged inside deadlights arranged so that they can be effectively closed and secured watertight.

  • (2) No side scuttle shall be fitted in a position so that its sill is below a line drawn parallel to the freeboard deck at side and having its lowest point 2.5 per cent of the breadth (B) above the load water line, or 500 mm whichever is the greater distance.

  • (3) The side scuttles, together with their glasses, if fitted and deadlights, shall be of substantial and approved construction.

 Freeing Ports

• • 24 (1) Where bulwarks on the weather portions of freeboard or superstructure decks form wells, ample provision shall be made for rapidly freeing the decks of water and for draining them. Except as provided in subsections (2) and (3) of this Regulation, the minimum freeing port area (A) on each side of the ship for each well on the freeboard deck shall be that given by the following formulas in cases where the sheer in way of the well is standard or greater than standard. The minimum area for each well on superstructure decks shall be one-half of the area given by the formulas.

    Where the length of bulwark (l) in the well is 20 m or less

    A = 0.7 + 0.035 l square metres

    where

    l

    exceeds 20 m

    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 m in average height, the required area shall be increased by 0.004 m² per metre of length of well for each 0.1 m difference in height. If the bulwark is less than 0.9 m in average height, the required area may be decreased by 0.004 m² per metre of length of well for each 0.1 m difference in height.

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

  • (3) Where a ship fitted with a trunk does not comply with the requirements of Regulation 36(1)(e) or where continuous or substantially continuous hatchway side coamings are fitted between detached superstructures, the minimum area of the freeing port openings shall be calculated from the following table:

    Breadth of hatchway of trunk in relation to the breadth of ship	Area of freeing ports in relation to the total area of the bulwarks
    40% or less	20%
    75% or more	10%

    The area of freeing ports at intermediate breadths shall be obtained by linear interpolation.

  • (4) In ships having superstructures which are open at either or both ends, adequate provision for freeing the space within such superstructures shall be provided to the satisfaction of the Administration.

  • (5) The lower edges of the freeing ports shall be as near the deck as practicable. Two-thirds of the freeing port area required shall be provided in the half of the well nearest the lowest point of the sheer curve.

  • (6) All such openings in the bulwarks shall be protected by rails or bars spaced approximately 230 mm apart. If shutters are fitted to freeing ports, ample clearance shall be provided to prevent jamming. Hinges shall have pins or bearings of non-corrodible material. If shutters are fitted with securing appliances, these appliances shall be of approved construction.

Protection of the Crew

• • 25 (1) The strength of the deckhouses used for the accommodation of the crew shall be to the satisfaction of the Administration.

  • (2) Efficient guard-rails or bulwarks shall be fitted on all exposed parts of the freeboard and superstructure decks. The height of the bulwarks or guard-rails shall be at least 1 m from the deck, provided that where this height would interfere with the normal operation of the ship, a lesser height may be approved if the Administration is satisfied that adequate protection is provided.

  • (3) The opening below the lowest course of the guard-rails shall not exceed 230 mm. The other courses shall be not more than 380 mm apart. In the case of ships with rounded gunwales the guard-rail supports shall be placed on the flat of the deck.

  • (4) Satisfactory means (in the form of guard-rails, life lines, gangways or underdeck passages etc.) shall be provided for the protection of the crew in getting to and from their quarters, the machinery space and all other parts used in the necessary work of the ship.

  • (5) Deck cargo carried on any ship shall be so stowed that any opening which is in way of the cargo and which gives access to and from the crew’s quarters, the machinery space and all other parts used in the necessary work of the ship, can be properly closed and secured against the admission of water. Effective protection for the crew in the form of guard-rails or life lines shall be provided above the deck cargo if there is no convenient passage on or below the deck of the ship.

Special Conditions of Assignment for Type ‘A' Ships

Machinery Casings

• • 26 (1) Machinery casings on Type ‘A' ships as defined in Regulation 27 shall be protected by an enclosed poop or bridge of at least standard height, or by a deckhouse of equal height and equivalent strength, provided that machinery casings may be exposed if there are no openings giving direct access from the freeboard deck to the machinery space. A door complying with the requirements of Regulation 12 may, however, be permitted in the machinery casing, provided that it leads to a space or passageway which is as strongly constructed as the casing and is separated from the stairway to the engine room by a second weathertight door of steel or other equivalent material.

  Gangway and Access

  • (2) An efficiently constructed fore and aft permanent gangway of sufficient strength shall be fitted on Type ‘A' ships at the level of the superstructure deck between the poop and the midship bridge or deckhouse where fitted, or equivalent means of access shall be provided to carry out the purpose of the gangway, such as passages below deck. Elsewhere, and on Type ‘A' ships without a midship bridge, arrangements to the satisfaction of the Administration shall be provided to safeguard the crew in reaching all parts used in the necessary work of the ship.

  • (3) Safe and satisfactory access from the gangway level shall be available between separate crew accommodations and also between crew accommodation and the machinery space.

  Hatchways

  • (4) Exposed hatchways on the freeboard and forecastle decks or on the tops of expansion trunks on Type ‘A' ships shall be provided with efficient watertight covers of steel or other equivalent material.

  Freeing Arrangements

  • (5) Type ‘A' ships with bulwarks shall have open rails fitted for at least half the length of the exposed parts of the weather deck or other effective freeing arrangements. The upper edge of the sheer strake shall be kept as low as practicable.

  • (6) Where superstructures are connected by trunks, open rails shall be fitted for the whole length of the exposed parts of the freeboard deck.

PART IIIFreeboards

Types of Ships

• • 27 (1) For the purposes of freeboard computation, ships shall be divided into Type ‘A' and Type ‘B'.

  Type ‘A' ships

  • (2) A Type ‘A' ship is one which is designed to carry only liquid cargoes in bulk, and in which cargo tanks have only small access openings closed by watertight gasketed covers of steel or equivalent material. Such a ship necessarily has the following inherent features:

    • (a) high integrity of the exposed deck; and

    • (b) high degree of safety against flooding, resulting from the low permeability of loaded cargo spaces and the degree of subdivision usually provided.

  • (3) A Type ‘A' ship, if over 150 m in length, and designed to have empty compartments when loaded to its summer load water line, shall be able to withstand the flooding of any one of these empty compartments at an assumed permeability of 0.95, and remain afloat in a condition of equilibrium considered to be satisfactory by the Administration. In such a ship, if over 225 m in length, the machinery space shall be treated as a floodable compartment but with a permeability of 0.85.

    For the guidance of Administrations the following limits may be regarded as satisfactory:

    • (a) the final water line after flooding is below the lower edge of any opening through which progressive flooding may take place;

    • (b) the maximum angle of heel due to unsymmetrical flooding is of the order of 15 degrees; and

    • (c) the metacentric height in the flooded condition is positive.

  • (4) A Type ‘A' ship shall be assigned a freeboard not less than that based on Table I of Regulation 28.

  Type ‘B' ships

  • (5) All ships which do not come within the provisions regarding Type ‘A' ships in subsections (2) and (3) of this Regulation shall be considered as Type ‘B' ships.

  • (6) Type ‘B' ships, which in position 1 have hatchways fitted with hatch covers complying with the requirements of Regulation 15(7) or 16 shall, except as provided in subsections (7) to (10) inclusive of this Regulation, be assigned freeboards based on Table II of Regulation 28.

  • (7) Any Type ‘B' ships of over 100 m in length may be assigned freeboards less than those required under subsection (6) of this Regulation provided that, in relation to the amount of reduction granted, the Administration is satisfied that:

    • (a) the measures provided for the protection of the crew are adequate;

    • (b) the freeing arrangements are adequate;

    • (c) the covers in positions 1 and 2 comply with the provisions of Regulation 16 and have adequate strength, special care being given to their sealing and securing arrangements;

    • (d) this ship, when loaded to its summer load water line, will remain afloat in a satisfactory condition of equilibrium after flooding of any single damaged compartment at an assumed permeability of 0.95 excluding the machinery space; and

    • (e) in such a ship, if over 225 m in length, the machinery space shall be treated as a floodable compartment but with a permeability of 0.85.

    For the guidance of Administrations in applying paragraphs (7)(d) and (e), the limits given in paragraphs (3)(a), (b) and (c) may be regarded as satisfactory.

    The relevant calculations may be based upon the following main assumptions:

    — the vertical extent of damage is equal to the depth of the ship;

    — the penetration of damage is not more than B/5;

    — no main transverse bulkhead is damaged;

    — the height of the centre of gravity above the base line is assessed allowing for homogeneous loading of cargo holds, and for 50 per cent of the designed capacity of consumable fluids and stores, etc.

  • (8) In calculating the freeboards for Type ‘B' ships which comply with the requirements of subsection (7) of this Regulation, the values from Table II of Regulation 28 shall not be reduced by more than 60 per cent of the difference between the ‘B' and ‘A' tabular values for the appropriate ship lengths.

  • (9) The reduction in tabular freeboard allowed under subsection (8) of this Regulation may be increased up to the total difference between the values in Table I and those in Table II of Regulation 28 on condition that the ship complies with the requirements of Regulations 26(1), (2), (3), (5) and (6), as if it were a Type ‘A' ship, and further complies with the provisions of paragraphs (7)(a) to (d) inclusive of this Regulation except that the reference in paragraph (d) to the flooding of any single damaged compartment shall be treated as a reference to the flooding of any two adjacent fore and aft compartments, neither of which is the machinery space. Also any such ship of over 225 m in length, when loaded to its summer load water line, shall remain afloat in a satisfactory condition of equilibrium after flooding of the machinery space, taken alone, at an assumed permeability of 0.85.

  • (10) Type ‘B' ships, which in position 1 have hatchways fitted with hatch covers which comply with the requirements of Regulation 15, other than subsection (7), shall be assigned freeboards based upon the values given in Table II of Regulation 28 increased by the values given in the following table:

    Length of ship (metres)	Freeboard increase (millimetres)	Length of ship (metres)	Freeboard increase (millimetres)	Length of ship (metres)	Freeboard increase (millimetres)	Length of ship (metres)	Freeboard increase (millimetres)
    —	—	—	—	—	—	—	—
    Longueur du navire (mètres)	Augmentation du franc-bord (millimètres)	Longueur du navire (mètres)	Augmentation du franc bord (millimètres)	Longueur du navire (mètres)	Augmentation du franc-bord (millimètres)	Longueur du navire (mètres)	Augmentation du franc-bord (millimètres)
    108 and		129	121	153	240	177	306
    below		130	126	154	244	178	308
    et au-		131	131	155	247	179	311
    dessous	50	132	136	156	251	180	313
    109	52	133	142	157	254	181	315
    110	55	134	147	158	258	182	318
    111	57	135	153	159	261	183	320
    112	59	136	159	160	264	184	322
    113	62	137	164	161	267	185	325
    114	64	138	170	162	270	186	327
    115	68	139	175	163	273	187	329
    116	70	140	181	164	275	188	332
    117	73	141	186	165	278	189	334
    118	76	142	191	166	280	190	336
    119	80	143	196	167	283	191	339
    120	84	144	201	168	285	192	341
    121	87	145	206	169	287	193	343
    122	91	146	210	170	290	194	346
    123	95	147	215	171	292	195	348
    124	99	148	219	172	294	196	350
    125	103	149	224	173	297	197	353
    126	108	150	228	174	299	198	355
    127	112	151	232	175	301	199	357
    128	116	152	236	176	304	200	358

    Freeboards at intermediate lengths of ship shall be obtained by linear interpolation.

    Ships above 200 m in length shall be dealt with by the Administration.

  • (11) A lighter, barge or other ship without independent means of propulsion shall be assigned a freeboard in accordance with the provisions of these Regulations. However, in the case of barges which are unmanned, the requirements of Regulations 25, 26(2) and (3) and 39 shall not apply. Such unmanned barges, which have on the freeboard deck only small access openings closed by weathertight gasketed covers of steel or equivalent material, may be assigned freeboards 25 per cent less than those calculated in accordance with these Regulations.

Freeboard Tables

Type ‘A' Ships

• • 28 (1) The tabular freeboard for Type ‘A' ships shall be determined from the following table:

    Length of ship (metres)	Freeboard (millimetres)	Length of ship (metres)	Freeboard (millimetres)	Length of ship (metres)	Freeboard (millimetres)	Length of ship (metres)	Freeboard (millimetres)
    —	—	—	—	—	—	—	—
    Longueur du navire (mètres)	Franc-bord (millimètres)	Longueur du navire (mètres)	Franc-bord (millimètres)	Longueur du navire (mètres)	Franc-bord (millimètres)	Longueur du navire (mètres)	Franc-bord (millimètres)
    24	200	45	385	66	653	87	940
    25	208	46	396	67	666	88	955
    26	217	47	408	68	680	89	969
    27	225	48	420	69	693	90	984
    28	233	49	432	70	706	91	999
    29	242	50	443	71	720	92	1 014
    30	250	51	455	72	733	93	1 029
    31	258	52	467	73	746	94	1 044
    32	267	53	478	74	760	95	1 059
    33	275	54	490	75	773	96	1 074
    34	283	55	503	76	786	97	1 089
    35	292	56	516	77	800	98	1 105
    36	300	57	530	78	814	99	1 120
    37	308	58	544	79	828	100	1 135
    38	316	59	559	80	841	101	1 151
    39	325	60	573	81	855	102	1 166
    40	334	61	587	82	869	103	1 181
    41	344	62	600	83	883	104	1 196
    42	354	63	613	84	897	105	1 212
    43	364	64	626	85	911	106	1 228
    44	374	65	639	86	926	107	1 244
    Length of ship (metres)	Freeboard (milli- metres)	Length of ship (metres)	Freeboard (milli- metres)	Length of ship (metres)	Freeboard (milli- metres)	Length of ship (metres)	Freeboard (milli- metres)
    —	—	—	—	—	—	—	—
    Longueur du navire (mètres)	Franc-bord (milli- mètres)	Longueur du navire (mètres)	Franc-bord (milli- mètres)	Longueur du navire (mètres)	Franc-bord (milli- mètres)	Longueur du navire (mètres)	Franc-bord (milli- mètres)
    108	1 260	172	2 294	236	2 918	301	3 266
    109	1 276	173	2 307	237	2 925	302	3 270
    110	1 293	174	2 320	238	2 932	303	3 274
    111	1 309	175	2 332	239	2 939	304	3 278
    112	1 326	176	2 345	240	2 946	305	3 281
    113	1 342	177	2 357	241	2 953	306	3 285
    114	1 359	178	2 369	242	2 959	307	3 288
    115	1 376	179	2 381	243	2 966	308	3 292
    116	1 392	180	2 393	244	2 973	309	3 295
    117	1 409	181	2 405	245	2 979	310	3 298
    118	1 426	182	2 416	246	2 986	311	3 302
    119	1 442	183	2 428	247	2 993	312	3 305
    120	1 459	184	2 440	248	3 000	313	3 308
    121	1 476	185	2 451	249	3 006	314	3 312
    122	1 494	186	2 463	250	3 012	315	3 315
    123	1 511	187	2 474	251	3 018	316	3 318
    124	1 528	188	2 486	252	3 024	317	3 322
    125	1 546	189	2 497	253	3 030	318	3 325
    126	1 563	190	2 508	254	3 036	319	3 328
    127	1 580	191	2 519	255	3 042	320	3 331
    128	1 598	192	2 530	256	3 048	321	3 331
    129	1 615	193	2 541	257	3 054	322	3 337
    130	1 632	194	2 552	258	3 060	323	3 339
    131	1 650	195	2 562	259	3 066	324	3 342
    132	1 667	196	2 572	260	3 072	325	3 345
    133	1 684	197	2 582	261	3 078	326	3 347
    134	1 702	198	2 592	262	3 084	327	3 350
    135	1 719	199	2 602	263	3 089	328	3 353
    136	1 736	200	2 612	264	3 095	329	3 355
    137	1 753	201	2 622	265	3 101	330	3 358
    138	1 770	202	2 632	266	3 106	331	3 361
    139	1 787	203	2 641	267	3 112	332	3 363
    140	1 803	204	2 650	268	3 117	333	3 366
    141	1 820	205	2 659	269	3 123	334	3 368
    142	1 837	206	2 669	270	3 128	335	3 371
    143	1 853	207	2 678	271	3 133	336	3 373
    144	1 870	208	2 687	272	3 138	337	3 375
    145	1 886	209	2 696	273	3 143	338	3 378
    146	1 903	210	2 705	274	3 148	339	3 380
    147	1 919	211	2 714	275	3 153	340	3 382
    148	1 935	212	2 723	276	3 158	341	3 385
    149	1 952	213	2 732	277	3 163	342	3 387
    150	1 968	214	2 741	278	3 167	343	3 389
    151	1 984	215	2 749	279	3 172	344	3 392
    152	2 000	216	2 758	280	3 176	345	3 394
    153	2 016	217	2 767	281	3 181	346	3 396
    154	2 032	218	2 775	282	3 185	347	3 399
    155	2 048	219	2 784	283	3 189	348	3 401
    156	2 064	220	2 792	284	3 194	349	3 403
    157	2 080	221	2 801	285	3 198	350	3 406
    158	2 096	222	2 809	286	3 202	351	3 408
    159	2 111	223	2 817	287	3 207	352	3 410
    160	2 126	224	2 825	288	3 211	353	3 412
    161	2 141	225	2 833	289	3 215	354	3 414
    162	2 155	226	2 841	290	3 220	355	3 416
    163	2 169	227	2 849	291	3 224	356	3 418
    164	2 184	228	2 857	292	3 228	357	3 420
    165	2 198	229	2 865	293	3 233	358	3 422
    166	2 212	230	2 872	294	3 237	359	3 423
    167	2 226	231	2 880	295	3 241	360	3 425
    168	2 240	232	2 888	296	3 246	361	3 427
    169	2 254	233	2 895	297	3 250	362	3 428
    170	2 268	234	2 903	298	3 254	363	3 430
    171	2 281	235	2 910	299	3 258	364	3 432
    				300	3 262	365	3 433

    Freeboards at intermediate lengths of ship shall be obtained by linear interpolation.

    Ships above 365 m in length shall be dealt with by the Administration.

  Type ‘B' Ships

  • (2) The tabular freeboard for Type ‘B' ships shall be determined from the following table:

    Length of ship (metres)	Freeboard (millimetres)	Length of ship (metres)	Freeboard (millimetres)	Length of ship (metres)	Freeboard (millimetres)	Length of ship (metres)	Freeboard (millimetres)
    —	—	—	—	—	—	—	—
    Longueur du navire (mètres)	Franc-bord (millimètres)	Longueur du navire (mètres)	Franc-bord (millimètres)	Longueur du navire (mètres)	Franc-bord (millimètres)	Longueur du navire (mètres)	Franc-bord (millimètres)
    24	200	79	868	134	1 979	189	3 080
    25	208	80	887	135	2 000	190	3 098
    26	217	81	905	136	2 021	191	3 116
    27	225	82	923	137	2 043	192	3 134
    28	233	83	942	138	2 065	193	3 151
    29	242	84	960	139	2 087	194	3 167
    30	250	85	978	140	2 109	195	3 185
    31	258	86	996	141	2 130	196	3 202
    32	267	87	1 015	142	2 151	197	3 219
    33	275	88	1 034	143	2 171	198	3 235
    34	283	89	1 054	144	2 190	199	3 249
    35	292	90	1 075	145	2 209	200	3 264
    36	300	91	1 096	146	2 229	201	3 280
    37	308	92	1 116	147	2 250	202	3 296
    38	316	93	1 135	148	2 271	203	3 313
    39	325	94	1 154	149	2 293	204	3 330
    40	334	95	1 172	150	2 315	205	3 347
    41	344	96	1 190	151	2 334	206	3 363
    42	354	97	1 209	152	2 354	207	3 380
    43	364	98	1 229	153	2 375	208	3 397
    44	374	99	1 250	154	2 396	209	3 413
    45	385	100	1 271	155	2 418	210	3 430
    46	396	101	1 293	156	2 440	211	3 445
    47	408	102	1 315	157	2 460	212	3 460
    48	420	103	1 337	158	2 480	213	3 475
    49	432	104	1 359	159	2 500	214	3 490
    50	443	105	1 380	160	2 520	215	3 505
    51	455	106	1 401	161	2 540	216	3 520
    52	467	107	1 421	162	2 560	217	3 537
    53	478	108	1 440	163	2 580	218	3 554
    54	490	109	1 459	164	2 600	219	3 570
    55	503	110	1 479	165	2 620	220	3 586
    56	516	111	1 500	166	2 640	221	3 601
    57	530	112	1 521	167	2 660	222	3 615
    58	544	113	1 543	168	2 680	223	3 630
    59	559	114	1 565	169	2 698	224	3 645
    60	573	115	1 587	170	2 716	225	3 660
    61	587	116	1 609	171	2 735	226	3 675
    62	601	117	1 630	172	2 754	227	3 690
    63	615	118	1 651	173	2 774	228	3 705
    64	629	119	1 671	174	2 795	229	3 720
    65	644	120	1 690	175	2 815	230	3 735
    66	659	121	1 709	176	2 835	231	3 750
    67	674	122	1 729	177	2 855	232	3 765
    68	689	123	1 750	178	2 875	233	3 780
    69	705	124	1 771	179	2 895	234	3 795
    70	721	125	1 793	180	2 915	235	3 808
    71	738	126	1 815	181	2 933	236	3 821
    72	754	127	1 837	182	2 952	237	3 835
    73	769	128	1 859	183	2 970	238	3 849
    74	784	129	1 880	184	2 988	239	3 864
    75	800	130	1 901	185	3 007	240	3 880
    76	816	131	1 921	186	3 025	241	3 893
    77	833	132	1 940	187	3 044	242	3 906
    78	850	133	1 959	188	3 062	243	3 920
    Length of ship (metres)	Freeboard (millimetres)	Length of ship (metres)	Freeboard (millimetres)	Length of ship (metres)	Freeboard (millimetres)	Length of ship (metres)	Freeboard (millimetres)
    —	—	—	—	—	—	—	—
    Longueur du navire (mètres)	Franc-bord (millimètres)	Longueur du navire (mètres)	Franc-bord (millimètres)	Longueur du navire (mètres)	Franc-bord (millimètres)	Longueur du navire (mètres)	Franc-bord (millimètres)
    244	3 934	275	4 339	306	4 695	337	5 025
    245	3 949	276	4 350	307	4 704	338	5 035
    246	3 965	277	4 362	308	4 714	339	5 045
    247	3 978	278	4 373	309	4 725	340	5 055
    248	3 992	279	4 385	310	4 736	341	5 065
    249	4 005	280	4 397	311	4 748	342	5 075
    250	4 018	281	4 408	312	4 757	343	5 086
    251	4 032	282	4 420	313	4 768	344	5 097
    252	4 045	283	4 432	314	4 779	345	5 108
    253	4 058	284	4 443	315	4 790	346	5 119
    254	4 072	285	4 455	316	4 801	347	5 130
    255	4 085	286	4 467	317	4 812	348	5 140
    256	4 098	287	4 478	318	4 823	349	5 150
    257	4 112	288	4 490	319	4 834	350	5 160
    258	4 125	289	4 502	320	4 844	351	5 170
    259	4 139	290	4 513	321	4 855	352	5 180
    260	4 152	291	4 525	322	4 866	353	5 190
    261	4 165	292	4 537	323	4 878	354	5 200
    262	4 177	293	4 548	324	4 890	355	5 210
    263	4 189	294	4 560	325	4 899	356	5 220
    264	4 201	295	4 572	326	4 909	357	5 230
    265	4 214	296	4 583	327	4 920	358	5 240
    266	4 227	297	4 595	328	4 931	359	5 250
    267	4 240	298	4 607	329	4 943	360	5 260
    268	4 252	299	4 618	330	4 955	361	5 268
    269	4 264	300	4 630	331	4 965	362	5 276
    270	4 276	301	4 642	332	4 975	363	5 285
    271	4 289	302	4 654	333	4 985	364	5 294
    272	4 302	303	4 665	334	4 995	365	5 303
    273	4 315	304	4 676	335	5 005
    274	4 327	305	4 686	336	5 015

    Freeboards at intermediate lengths of ship shall be obtained by linear interpolation.

    Ships above 365 m in length shall be dealt with by the Administration.

Correction to the Freeboard for Ships under 100 m in length

• 29 The tabular freeboard for a Type ‘B' ship of between 24 m and 100 m in length having enclosed superstructures with an effective length of up to 35 per cent of the length of the ship shall be increased by:

  7.5 (100 - L)(0.35 - E/L) millimetres

  where

  L

  = length of ship in metres,

  where

  E

  = effective length of superstructure in metres as defined in Regulation 35.

Correction for Block Coefficient

• 30 Where the block coefficient (C_b) exceeds 0.68, the tabular freeboard specified in Regulation 28 as modified, if applicable, by Regulations 27(8), 27(10) and 29 shall be multiplied by the factor (C_b + 0.68) / 1.36.

Correction for Depth

• • 31 (1) Where D exceeds L/15 the freeboard shall be increased by (D - L/15) R millimetres, where R is L/0.48 at length less than 120 m and 250 at 120 m length and above.

  • (2) Where D is less than L/15, no reduction shall be made except in a ship with an enclosed superstructure covering at least 0.6 L amidships, with a complete trunk, or combination of detached enclosed superstructures and trunks which extend all fore and aft, where the freeboard shall be reduced at the rate prescribed in paragraph (1) of this Regulation.

  • (3) Where the height of superstructure or trunk is less than the standard height, the reduction shall be in the ratio of the actual to the standard height as defined in Regulation 33.

Correction for Position of Deck Line

• 32 Where the actual depth to the upper edge of the deck line is greater or less than D, the difference between the depths shall be added to or deducted from the freeboard.

Standard Height of Superstructure

• 33 The standard height of a superstructure shall be as given in the following table:

  L (metres)	Raised Quarter Deck	All other Superstructures
  30 or less	0.90	1.80
  75	1.20	1.80
  125 or more	1.80	2.30

  The standard heights at intermediate lengths of the ship shall be obtained by linear interpolation.

Length of Superstructure

• • 34 (1) Except as provided in subsection (2) of this Regulation, the length of a superstructure (S) shall be the mean length of the parts of the superstructure which lie within the length (L).

  • (2) Where the end bulkhead of an enclosed superstructure extends in a fair convex curve beyond its intersection with the superstructure sides, the length of the superstructure may be increased on the basis of an equivalent plane bulkhead. This increase shall be two-thirds of the fore and aft extent of the curvature. The maximum curvature which may be taken into account in determining this increase is one-half the breadth of the superstructure at the point of intersection of the curved end of the superstructure with its side.

Effective Length of Superstructure

• • 35 (1) Except as provided for in subsection (2) of this Regulation, the effective length (E) of an enclosed superstructure of standard height shall be its length.

  • (2) In all cases where an enclosed superstructure of standard height is set in from the sides of the ship as permitted in subsection 3(9) of this Schedule the effective length is the length modified by the ratio of b/Bs, where

    “b” is the breadth of the superstructure at the middle of its length, and

    “Bs” is the breadth of the ship at the middle of the length of the superstructure, and

    where a superstructure is set in for a part of its length, this modification shall be applied only to the set in part.

  • (3) Where the height of an enclosed superstructure is less than the standard height, the effective length shall be its length reduced in the ratio of the actual height to the standard height. Where the height exceeds the standard, no increase shall be made to the effective length of the superstructure.

  • (4) The effective length of a raised quarter deck, if fitted with an intact front bulkhead, shall be its length up to a maximum of 0.6 L. Where the bulkhead is not intact, the raised quarter deck shall be treated as a poop of less than standard height.

  • (5) Superstructures which are not enclosed shall have no effective length.

Trunks

• • 36 (1) A trunk or similar structure which does not extend to the sides of the ship shall be regarded as efficient on the following conditions:

    • (a) the trunk is at least as strong as a superstructure;

    • (b) the hatchways are in the trunk deck, and the hatchway coamings and covers comply with the requirements of Regulations 13 to 16 inclusive and the width of the trunk deck stringer provides a satisfactory gangway and sufficient lateral stiffness. However, small access openings with watertight covers may be permitted in the freeboard deck;

    • (c) a permanent working platform fore and aft fitted with guard-rails is provided by the trunk deck, or by detached trunks connected to superstructures by efficient permanent gangways;

    • (d) ventilators are protected by the trunk, by watertight covers or by other equivalent means;

    • (e) open rails are fitted on the weather parts of the freeboard deck in way of the trunk for at least half their length;

    • (f) the machinery casings are protected by the trunk, by a superstructure of at least standard height, or by a deckhouse of the same height and of equivalent strength;

    • (g) the breadth of the trunk is at least 60 per cent of the breadth of the ship; and

    • (h) where there is no superstructure, the length of the trunk is at least 0.6 L.

  • (2) The full length of an efficient trunk reduced in the ratio of its mean breadth to B shall be its effective length.

  • (3) The standard height of a trunk is the standard height of a superstructure other than a raised quarter deck.

  • (4) Where the height of a trunk is less than the standard height, its effective length shall be reduced in the ratio of the actual to the standard height. Where the height of the hatchway coamings on the trunk deck is less than that required under Regulation 15(1), a reduction from the actual height of trunk shall be made which corresponds to the difference between the actual and the required height of coaming.

Deduction for Superstructures and Trunks

• • 37 (1) Where the effective length of superstructures and trunks is 1.0 L, the deduction from the freeboard shall be 350 mm at 24 m length of ship, 860 mm at 85 m length, and 1 070 mm at 122 m length and above; deductions at intermediate lengths shall be obtained by linear interpolation.

  • (2) Where the total effective length of superstructures and trunks is less than 1.0 L the deduction shall be a percentage obtained from one of the following tables:

    Total Effective Length of Superstructures and Trunks
    Longueur totale effective des superstructures et des 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
    Percentage of deduction for all types of superstructures	0	7	14	21	31	41	52	63	75.3	87.7	100	Pourcentage de réduction pour tous les types de superstructures

    Percentages at intermediate lengths of superstructures and trunks shall be obtained by linear interpolation.

    				Total Effective Length of Superstructures and Trunks
    	Line
    	Ligne			Longueur totale effective des superstructures et des 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
    Ships with forecastle and without detached bridge	I	0	5	10	15	23.5	32	46	63	75.3	87.7	100	Navires avec gaillard et sans château détaché
    Ships with forecastle and detached bridge	II	0	6.3	12.7	19	27.5	36	46	63	75.3	87.7	100	Navires avec gaillard et avec château détaché

    Percentages at intermediate lengths of superstructures and trunks shall be obtained by linear interpolation.

  • (3) For ships of Type ‘B':

    • (a) where the effective length of a bridge is less than 0.2 L, the percentages shall be obtained by linear interpolation between lines I and II;

    • (b) where the effective length of a forecastle is more than 0.4 L, the percentages shall be obtained from line II; and

    • (c) 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.

Sheer

General

• • 38 (1) The sheer shall be measured from the deck at side to a line of reference drawn parallel to the keel through the sheer line amidships.

  • (2) In ships designed with a rake of keel, the sheer shall be measured in relation to a reference line drawn parallel to the design load water line.

  • (3) In flush deck ships and in ships with detached superstructures the sheer shall be measured at the freeboard deck.

  • (4) In ships with topsides of unusual form in which there is a step or break in the topsides, the sheer shall be considered in relation to the equivalent depth amidships.

  • (5) In ships with a superstructure of standard height which extends over the whole length of the freeboard deck, the sheer shall be measured at the superstructure deck. Where the height exceeds the standard the least difference (Z) between the actual and standard heights shall be added to each end ordinate. Similarly, the intermediate ordinates at distances of 1/6 L and 1/3 L from each perpendicular shall be increased by 0.444 Z and 0.111 Z respectively.

  • (6) Where the deck of an enclosed superstructure has at least the same sheer as the exposed freeboard deck, the sheer of the enclosed portion of the freeboard deck shall not be taken into account.

  • (7) Where an enclosed poop or forecastle is of standard height with greater sheer than that of the freeboard deck, or is of more than standard height, an addition to the sheer of the freeboard deck shall be made as provided in subsection (12) of this Regulation.

  Standard Sheer Profile

  • (8) The ordinates of the standard sheer profile are given in the following table:

    STANDARD SHEER PROFILE

    (Where L is in metres)

    	Station	Ordinate (in millimetres)		Factor
    	After Perpendicular	25	(L/3 + 10)	1
    After half	1/6 L from A.P.	11.1	(L/3 + 10)	3
    	1/3 L from A.P.	2.8	(L/3 + 10)	3
    	Amidships		0	1
    	Amidships		0	1
    Forward half	1/3 L from F.P.	5.6	(L/3 + 10)	3
    	1/6 L from F.P.	22.2	(L/3 + 10)	3
    	Forward Perpendicular	50	(L/3 + 10)	1

  Measurement of Variation from Standard Sheer Profile

  • (9) Where the sheer profile differs from the standard, the four ordinates of each profile in the forward or after half shall be multiplied by the appropriate factors given in the table of ordinates. The difference between the sums of the respective products and those of the standard divided by eight measures the deficiency or excess of sheer in the forward or after half. The arithmetical mean of the excess or deficiency in the forward and after halves measures the excess or deficiency of sheer.

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

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

  • (12) Where sheer credit is given for a poop or forecastle the following formula shall be used:

    s = y/3 L′/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 of sheer,

    L′

    = mean enclosed length of poop or forecastle up to a maximum length of 0.5 L,

    L

    = length of ship as defined in Regulation 3(1).

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

  Correction for Variations from Standard Sheer Profile

  • (13) The correction for sheer shall be the deficiency or excess of sheer (see subsections (9) to (11) inclusive of this Regulation), multiplied by

    0.75 - (S / 2 L)

    where

    S

    is the total length of enclosed superstructures.

  Addition for Deficiency in Sheer

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

  Deduction for Excess Sheer

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

Minimum Bow Height

• • 39 (1) The bow height defined as the vertical distance at the forward perpendicular between the water line corresponding to the assigned summer freeboard and the designed trim and the top of the exposed deck at side shall be not less than:

    for ships below 250 m in length,

    56 L (1 - L/500 [1.36 / (C_b + 0.68)]) millimetres;

    for ships of 250 m and above in length,

    7 000 [1.36 / (C_b + 0.68)]) millimetres;

    where

    L

    is the length of the ship in metres,

    C_b

    is the block coefficient which is to be taken as not less than 0.68.

  • (2) Where the bow height required subsection (1) of this Regulation is obtained by sheer, the sheer shall extend for at least 15 per cent of the length of the ship measured from a forward perpendicular. Where it is obtained by fitting a superstructure, such superstructure shall extend from the stem to a point at least 0.07 L abaft the forward perpendicular, and it shall comply with the following requirements:

    • (a) for ships not over 100 m in length it shall be enclosed as defined in Regulation 3(9); and

    • (b) for ships over 100 m in length it shall be fitted with satisfactory closing appliances.

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

Minimum Freeboards

Summer Freeboard

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

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

  Tropical Freeboard

  • (3) The minimum freeboard in the Tropical Zone shall be the freeboard obtained by a deduction from the summer freeboard of 1/48th of the summer draught measured from the top of the keel to the centre of the ring of the load line mark.

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

  Winter Freeboard

  • (5) The minimum freeboard in winter shall be the freeboard obtained by an addition to the summer freeboard of 1/48th of summer draught, measured from the top of the keel to the centre of the ring of the load line mark.

  Winter North Atlantic Freeboard

  • (6) The minimum freeboard for ships of not more than 100 m in length that enter any part of the North Atlantic defined in section 7 of Schedule II during the winter seasonal period shall be the winter freeboard plus 50 mm. For other ships, the Winter North Atlantic Freeboard shall be the winter freeboard.

  Fresh Water Freeboard

  • (7) The minimum freeboard in fresh water of unit density shall be obtained by deducting from the minimum freeboard in salt water:

    Δ / 4 T millimetres

    where

    Δ

    = displacement in salt water in tonnes at the summer load water line,

    T

    = tonnes per centimetre immersion in salt water at the summer load water line.

  • (8) Where the displacement at the summer load water line cannot be certified, the deduction shall be 1/48th of summer draught, measured from the top of the keel to the centre of the ring of the load line mark.

PART IVSpecial Requirements for Ships Assigned Timber Freeboards

Application of This Part

• 41 Regulations 42 to 45 inclusive apply only to ships to which timber load lines are assigned.

Definitions

• • 42 (1) Timber Deck Cargo. The term timber deck cargo means a cargo of timber carried on an uncovered part of a freeboard or superstructure deck. The term does not include wood pulp or similar cargo.

  • (2) Timber Load Line. A timber deck cargo may be regarded as giving a ship a certain additional buoyancy and a greater degree of protection against the sea. For that reason, ships carrying a timber deck cargo may be granted a reduction of freeboard calculated according to the provisions of Regulation 45 and marked on the ship’s side in accordance with the provisions of Regulations 6(3) and (4). However, in order that such special freeboard may be granted and used, the timber deck cargo shall comply with certain conditions which are laid down in Regulation 44, and the ship itself shall also comply with certain conditions relating to its construction which are set out in Regulation 43.

Construction of Ship

Superstructure

• • 43 (1) Ships shall have a forecastle of at least standard height and a length of at least 0.07 L. In addition, if the ship is less than 100 m in length, a poop of at least standard height, or a raised quarter deck with either a deckhouse or a strong steel hood of at least the same total height shall be fitted aft.

  Double Bottom Tanks

  • (2) Double bottom tanks where fitted within the midship half length of the ship shall have adequate watertight longitudinal subdivision.

  Bulwarks

  • (3) The ship shall be fitted either with permanent bulwarks at least 1 m in height, specially stiffened on the upper edge and supported by strong bulwark stays attached to the deck and provided with necessary freeing ports, or with efficient rails of the same height and of specially strong construction.

Stowage

General

• • 44 (1) Openings in the weather deck over which cargo is stowed shall be securely closed and battened down. The ventilators shall be efficiently protected.

  • (2) Timber deck cargo shall extend over at least the entire available length which is the total length of the well or wells between superstructures. Where there is no limiting superstructure at the after end, the timber shall extend at least to the after end of the aftermost hatchway. The timber shall be stowed as solidly as possible to at least the standard height of a superstructure other than a raised quarter deck.

  • (3) On a ship within a seasonal winter zone in winter, the height of the deck cargo above the weather deck shall not exceed 1/3 of the extreme breadth of the ship.

  • (4) The timber deck cargo shall be compactly stowed, lashed and secured. It shall not interfere in any way with the navigation and necessary work of the ship.

  Uprights

  • (5) Uprights, when required by the nature of the timber, shall be of adequate strength considering the breadth of the ship; the spacing shall be suitable for the length and character of timber carried, but shall not exceed 3 m. Strong angles or metal sockets or equally efficient means shall be provided for securing the uprights.

  Lashings

  • (6) Timber deck cargo shall be efficiently secured throughout its length by independent over-all lashings spaced not more than 3 m apart. Eye plates for these lashings shall be efficiently attached to the sheer strake or to the deck stringer plate at intervals of not more than 3 m. The distance from an end bulkhead of a superstructure to the first eye plate shall be not more than 2 m. Eye plates and lashings shall be provided 0.6 m and 1.5 m from the ends of timber deck cargoes where there is no bulkhead.

  • (7) Lashings shall be not less than 19 mm close link chain or flexible wire rope of equivalent strength, fitted with sliphooks and turnbuckles, which shall be accessible at all times. Wire rope lashings shall have a short length of long link chain to permit the length of lashings to be regulated.

  • (8) When timber is in lengths less than 3.6 m, the spacing of the lashings shall be reduced or other suitable provisions made to suit the length of timber.

  • (9) All fittings required for securing the lashings shall be of strength corresponding to the strength of the lashings.

  Stability

  • (10) Provision shall be made for a safe margin of stability at all stages of the voyage, regard being given to additions of weight, such as those due to absorption of water and icing and to losses of weight such as those due to consumption of fuel and stores.

  Protection of Crew, Access to Machinery Spaces, etc.

  • (11) In addition to the requirements of Regulation 25(5) guard-rails or life lines spaced not more than 330 mm apart vertically shall be provided on each side of the deck cargo to a height of at least 1 m above the cargo.

  Steering Arrangements

  • (12) Steering arrangements shall be effectively protected from damage by cargo and, as far as practicable, shall be accessible. Efficient provision shall be made for steering in the event of a breakdown in the main steering arrangements.

Computation for Freeboard

• • 45 (1) The minimum summer freeboard shall be computed in accordance with Regulations 27(5), 27(6), 27(11), 28, 29, 30, 31, 32, 37 and 38, except that Regulation 37 is modified by substituting the following percentages for those given in Regulation 37:

    PERCENTAGE OF DEDUCTION FOR TYPE ‘A' SHIPS

    Total Effective Length of Superstructures
    Longueur effective totale des 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
    Percentage of deduction for all types of superstructures	20	31	42	53	64	70	76	82	88	94	100	Déduction pour tous les types de superstructures (en pourcentage)

    Percentages at intermediate lengths of superstructures shall be obtained by linear interpolation.

  • (2) The Winter Timber Freeboard shall be obtained by adding to the Summer Timber Freeboard 1/36th of the moulded summer timber draught.

  • (3) The Winter North Atlantic Timber Freeboard shall be the same as the Winter North Atlantic Freeboard prescribed in Regulation 40(6).

  • (4) The Tropical Timber Freeboard shall be obtained by deducting from the Summer Timber Freeboard 1/48th of the moulded summer timber draught.

  • (5) The Fresh Water Timber Freeboard shall be computed in accordance with Regulations 40(7) and (8) based on the summer timber load waterline.

  •  SOR/78-776, s. 1
  • SOR/80-53, ss. 2 to 6
  • SOR/82-971, s. 1
  • 1987, c. 7, s. 84(F)

Northern Winter Seasonal Zones and Areas

• 1

  • (1) North Atlantic Winter Seasonal Zones I and II

    • (a) The North Atlantic Winter Seasonal Zone I lies within the meridian of longitude 50° W from the coast of Greenland to latitude 45° N, THENCE, the parallel of latitude 45° N to longitude 15° W, THENCE, the meridian of longitude 15° W to latitude 60° N, THENCE, the parallel of latitude 60° N to the Greenwich Meridian, THENCE, this meridian northwards.

      Seasonal periods:

      WINTER: 16 October to 15 April

      SUMMER: 16 April to 15 October

    • (b) The North Atlantic Winter Seasonal Zone II lies within the meridian of longitude 68°30’ W from the coast of the United States to latitude 40° N, THENCE, the rhumb line to the point latitude 36° N, longitude 73° W, THENCE, the parallel of latitude 36° N to longitude 25° W and THENCE, the rhumb line to Cape Torinana.

    Excluded from this zone are the North Atlantic Winter Seasonal Zone I, the North Atlantic Winter Seasonal Area, the St. Lawrence River Seasonal Area and the Baltic Sea bounded by the parallel of latitude of The Skaw in the Skagerrak.

    The Shetland Islands are to be considered as being on the boundary of the North Atlantic Winter Seasonal Zones I and II.

    Seasonal periods:

    WINTER: 1 November to 31 March

    SUMMER: 1 April to 31 October

  • (2) North Atlantic Winter Seasonal Area

The boundary of the North Atlantic Winter Seasonal Area is —

the meridian of longitude 68°30’ W from the coast of the United States to latitude 40° N, THENCE, the rhumb line to the southernmost intersection of the meridian of longitude 61° W with the coast of Canada and THENCE, the east coasts of Canada and the United States.

Chedabucto Bay and the Strait of Canso to the Canso Causeway are to be considered as being on the boundary of the North Atlantic Winter Seasonal Zone II and the North Atlantic Winter Seasonal Area.

Seasonal periods:

For ships over 100 m in length:

WINTER: 16 December to 15 February

SUMMER: 16 February to 15 December

For ships of 100 m and under in length:

WINTER: 1 November to 31 March

SUMMER: 1 April to 31 October

• (3) St. Lawrence River Seasonal Area

The St. Lawrence River Seasonal Area consists of that part of the St. Lawrence River bounded by the Victoria Bridge in Montréal, a straight line drawn from Cap-des-Rosiers to West Point, Anticosti Island, and a line drawn along the meridian of longitude 63° w from Anticosti Island to the north shore of the St. Lawrence River.

Seasonal periods:

For a ship engaged in a voyage during the course of which it crosses the eastern boundary of the St. Lawrence River Seasonal Area:

WINTER: 1 November to 31 March

SUMMER: 1 April to 31 October

For a ship engaged in a voyage wholly within the limits of the North American Great Lakes Zone and the St. Lawrence River Seasonal Area:

WINTER: 1 November to 31 March

SUMMER: 1 April to 30 April, and 1 October to 31 October

TROPICAL: 1 May to 30 September

• (4) North Pacific Winter Seasonal Zone

The southern boundary of the North Pacific Winter Seasonal Zone is —

the parallel of latitude 50° N from the east coast of the USSR to the west coast of Sakhalin, THENCE, the west coast of Sakhalin to the southern extremity of Cape Kril’on, THENCE, the rhumb line to Wakkanai, Hokkaido, Japan, THENCE, the east and south coasts of Hokkaido to longitude 145° E, THENCE, the meridian of longitude 145° E to latitude 35° N, THENCE, the parallel of latitude 35° N to longitude 150° W and THENCE, the rhumb line to the southern extremity of Dall Island, Alaska.

Seasonal periods:

WINTER: 16 October to 15 April

SUMMER: 16 April to 15 October

Southern Winter Seasonal Zone

• 2 The northern boundary of the Southern Winter Seasonal Zone is —

  the rhumb line from the east coast of the American continent at Cape Tres Puntas to the point latitude 34° S, longitude 50° W, THENCE, the parallel of latitude 34° S to longitude 17° E, THENCE, the rhumb line to the point latitude 35°10’ S, longitude 20° E, THENCE, the rhumb line to the point latitude 34° S, longitude 28° E, THENCE, along the rhumb line to the point latitude 35°30’ S, longitude 118° E, and THENCE, the rhumb line to Cape Grim on the northwest coast of Tasmania; THENCE, along the north and east coasts of Tasmania to the southernmost point of Bruny Island, THENCE, the rhumb line to Black Rock Point on Stewart Island, THENCE, the rhumb line to the point latitude 47° S, longitude 170° E, THENCE, along the rhumb line to the point latitude 33° S, longitude 170° W, and THENCE, the parallel of latitude 33° S to the west coast of the American continent. Valparaiso is to be considered as being on the boundary line of the Summer and Winter Seasonal Zones.

  Seasonal periods:

  WINTER: 16 April to 15 October

  SUMMER: 16 October to 15 April

Tropical Zone

• 3

  • (1) Northern Boundary of the Tropical Zone

    The northern boundary of the Tropical Zone is —

    the parallel of latitude 13° N from the east coast of the American continent to longitude 60° W, THENCE, the rhumb line to the point latitude 10° N, longitude 58° W, THENCE, the parallel of latitude 10° N to longitude 20° W, THENCE, the meridian of longitude 20° W to latitude 30° N and THENCE, the parallel of latitude 30° N to the west coast of Africa; from the east coast of Africa the parallel of latitude 8° N to longitude 70° E, THENCE, the meridian of longitude 70° E to latitude 13° N, THENCE, the parallel of latitude 13° N to the west coast of India; THENCE, the south coast of India to latitude 10°30’ N on the east coast of India, THENCE, the rhumb line to the point latitude 9° N, longitude 82° E, THENCE, the meridian of longitude 82° E to latitude 8° N, THENCE, the parallel of latitude 8° N to the west coast of Malaysia, THENCE, the coast of South-East Asia to the east coast of Viet-Nam at latitude 10° N, THENCE, the parallel of latitude 10° N to longitude 145° E, THENCE, the meridian of longitude 145° E to latitude 13° N and THENCE, the parallel of latitude 13° N to the west coast of the American continent.

Saigon is to be considered as being on the boundary line of the Tropical Zone and the Seasonal Tropical Area.

• (2) Southern Boundary of the Tropical Zone

  The southern boundary of the Tropical Zone is —

  the rhumb line from the Port of Santos, Brazil, to the point where the meridian of longitude 40° W intersects the Tropic of Capricorn; THENCE, the Tropic of Capricorn to the west coast of Africa; from the east coast of Africa the parallel of latitude 20° S to the west coast of Madagascar, THENCE, the west and north coasts of Madagascar to longitude 50° E, THENCE, the meridian of longitude 50° E to latitude 10° S, THENCE, the parallel of latitude 10° S to longitude 98° E, THENCE, the rhumb line to Port Darwin, Australia, THENCE, the coasts of Australia and Wessel Island eastwards to Cape Wessel, THENCE, the parallel of latitude 11° S to the west side of Cape York; from the east side of Cape York the parallel of latitude 11° S to longitude 150° W, THENCE, the rhumb line to the point latitude 26° S, longitude 75° W, and THENCE, the rhumb line to the west coast of the American continent at latitude 30° S.

Coquimbo and Santos are to be considered as being on the boundary line of the Tropical and Summer Zones.

• (3) Areas to Be Included in the Tropical Zone

  The following areas are to be treated as included in the Tropical Zone —

  • (a) The Suez Canal, the Red Sea and the Gulf of Aden, from Port Said to the meridian of longitude 45° E.

  Aden and Berbera are to be considered as being on the boundary line of the Tropical Zone and the Seasonal Tropical Area.

  • (b) The Persian Gulf to the meridian of longitude 59° E.

  • (c) The area bounded by the parallel of latitude 22° S from the east coast of Australia to the Great Barrier Reef, THENCE, the Great Barrier Reef to latitude 11° S. The northern boundary of the area is the southern boundary of the Tropical Zone.

Seasonal Tropical Areas

The following are Seasonal Tropical Areas:

• 4

  • (1) In the North Atlantic

    An area bounded —

    on the north by the rhumb line from Cape Catoche, Yucatan, to Cape San Antonio, Cuba, the north coast of Cuba to latitude 20° N and THENCE, the parallel of latitude 20° N to longitude 20° W;

    on the west by the coast of the American continent;

    on the south and east by the northern boundary of the Tropical Zone.

    Seasonal periods:

    TROPICAL: 1 November to 15 July

    SUMMER: 16 July to 31 October

  • (2) In the Arabian Sea

    An area bounded —

    on the west by the coast of Africa, the meridian of longitude 45° E in the Gulf of Aden, the coast of South Arabia and the meridian of longitude 59° E in the Gulf of Oman;

    on the north and east by the coasts of Pakistan and India;

    on the south by the northern boundary of the Tropical Zone.

    Seasonal periods:

    TROPICAL: 1 September to 31 May

    SUMMER: 1 June to 31 August

  • (3) In the Bay of Bengal

The Bay of Bengal north of the northern boundary of the Tropical Zone.

Seasonal periods:

TROPICAL: 1 December to 30 April

SUMMER: 1 May to 30 November

• (4) In the South Indian Ocean

  • (a) An area bounded —

  on the north and west by the southern boundary of the Tropical Zone and the east coast of Madagascar;

  on the south by the parallel of latitude 20° S;

  on the east by the rhumb line from the point latitude 20° S, longitude 50° E, to the point latitude 15° S, longitude 51°30’ E, and THENCE, by the meridian of longitude 51°30’ E to latitude 10° S.

  Seasonal periods:

  TROPICAL: 1 April to 30 November

  SUMMER: 1 December to 31 March

  • (b) an area bounded —

  on the north by the southern boundary of the Tropical Zone;

  on the east by the coast of Australia;

  on the south by the parallel of latitude 15° S from longitude 51°30’ E, to longitude 120° E and THENCE, the meridian of longitude 120° E to the coast of Australia;

  on the west by the meridian of longitude 51°30’ E.

  Seasonal periods:

  TROPICAL: 1 May to 30 November

  SUMMER: 1 December to 30 April

• (5) In the China Sea

  An area bounded —

  on the west and north by the coasts of Viet-Nam and China from latitude 10° N to Hong Kong;

  on the east by the rhumb line from Hong Kong to the Port of Sual (Luzon Island) and the west coasts of the Islands of Luzon, Samar and Leyte to latitude 10° N;

  on the south by the parallel of latitude 10° N.

  Hong Kong and Sual are to be considered as being on the boundary of the Seasonal Tropical Area and Summer Zone.

  Seasonal periods:

  TROPICAL: 21 January to 30 April

  SUMMER: 1 May to 20 January

• (6) In the North Pacific

  • (a) An area bounded —

  on the north by the parallel of latitude 25° N;

  on the west by the meridian of longitude 160° E;

  on the south by the parallel of latitude 13° N;

  on the east by the meridian of longitude 130° W.

  Seasonal periods:

  TROPICAL: 1 April to 31 October

  SUMMER: 1 November to 31 March

  • (b) An area bounded —

  on the north and east by the west coast of the American continent;

  on the west by the meridian of longitude 123° W from the coast of the American continent to latitude 33° N and by the rhumb line from the point latitude 33° N, longitude 123° W, to the point latitude 13° N, longitude 105° W,

  on the south by the parallel of latitude 13° N.

  Seasonal Periods:

  TROPICAL: 1 March to 30 June and

  1 November to 30 November

  SUMMER: 1 July to 31 October and

  1 December to 28/29 February

• (7) In the South Pacific

  • (a) The Gulf of Carpentaria south of latitude 11° S.

    Seasonal periods:

    TROPICAL: 1 April to 30 November

    SUMMER: 1 December to 31 March

  • (b) An area bounded —

  on the north and east by the southern boundary of the Tropical Zone;

  on the south by the Tropic of Capricorn from the east coast of Australia to longitude 150° W, THENCE, by the meridian of longitude 150° W to latitude 20° S and THENCE, by the parallel of latitude 20° S to the point where it intersects the southern boundary of the Tropical Zone;

  on the west by the boundaries of the area within the Great Barrier Reef included in the Tropical Zone and by the east coast of Australia.

  Seasonal periods:

  TROPICAL: 1 April to 30 November

  SUMMER: 1 December to 31 March

Summer Zones

• 5 The remaining areas constitute the Summer Zones.

However, for ships of 100 m and under in length, the area bounded —

on the north and west by the east coast of the United States;

on the east by the meridian of longitude 68°30’ W from the coast of the United States to latitude 40° N and THENCE, by the rhumb line to the point latitude 36° N, longitude 73° W;

on the south by the parallel of latitude 36° N;

is a Winter Seasonal Area.

Seasonal periods:

WINTER: 1 November to 31 March

SUMMER: 1 April to 31 October

Enclosed Seas

• 6

  • (1) Baltic Sea

This sea bounded by the parallel of latitude of The Skaw in the Skagerrak is included in the Summer Zones.

However, for ships of 100 m and under in length, it is a Winter Seasonal Area.

Seasonal periods:

WINTER: 1 November to 31 March

SUMMER: 1 April to 31 October

• (2) Black Sea

This sea is included in the Summer Zones.

However, for ships of 100 m and under in length, the area north of latitude 44° N is a Winter Seasonal Area.

Seasonal periods:

WINTER: 1 December to 28/29 February

SUMMER: 1 March to 30 November

• (3) Mediterranean

This sea is included in the Summer Zones.

However, for ships of 100 m and under in length, the area bounded —

on the north and west by the coasts of France and Spain and the meridian of longitude 3° E from the coast of Spain to latitude 40° N;

on the south by the parallel of latitude 40° N from longitude 3° E to the west coast of Sardinia;

on the east by the west and north coasts of Sardinia from latitude 40° N to longitude 9° E, THENCE, by the meridian of longitude 9° E to the south coast of Corsica, THENCE, by the west and north coasts of Corsica to longitude 9° E and THENCE, by the rhumb line to Cape Sicié;

is a Winter Seasonal Area.

Seasonal periods:

WINTER: 16 December to 15 March

SUMMER: 16 March to 15 December

• (4) Sea of Japan

This sea south of latitude 50° N is included in the Summer Zones.

However, for ships of 100 m and under in length, the area between the parallel of latitude 50° N and the rhumb line from the east coast of Korea at latitude 38° N to the west coast of Hokkaido, Japan, at latitude 43°12’N is a Winter Seasonal Area.

Seasonal periods:

WINTER: 1 December to 28/29 February

SUMMER: 1 March to 30 November

The Winter North Atlantic Load Line

• 7 The part of the North Atlantic referred to in Regulation 40(6) of Schedule I comprises:

  • (a) that part of the North Atlantic Winter Seasonal Zone II which lies between the meridians of 15° W and 50° W;

  • (b) the whole of the North Atlantic Winter Seasonal Zone I, the Shetland Islands to be considered as being on the boundary.

• 8 The North American Great Lakes Zone

The North American Great Lakes Zone consists of Lake Ontario, Lake Erie, Lake Huron (including Georgian Bay), Lake Michigan and Lake Superior, the waters connecting those lakes, the St. Lawrence Seaway and the St. Lawrence River west of the Victoria Bridge in Montréal.

Seasonal periods:

WINTER: 1 November to 31 March

SUMMER: 1 April to 30 April, and 1 October to 31 October

TROPICAL: 1 May to 30 September

INTERNATIONAL LOAD LINE CERTIFICATE (1966)

Form L.L.2

Reg. No.

Issued under the provisions of the International Convention on Load Lines, 1966, under the authority of the Government of Canada by (Here follows either “the Chairman of the Board of Steamship Inspection” or, in a case where the Assigning Authority is not the Chairman, the name of the Assigning Authority)

Name of Ship	Distinctive Number or Letters	Port of Registry	Length (L) as defined in Article 2(8)
Freeboard assigned as *
Type of ship: **
Freeboard from Deck Line***		Load Line***
Tropical mm (T)		mm above (S)
Summer mm (S)		Upper edge of line through centre of ring
Winter mm (W)		mm below (S)
Winter North Atlantic mm (WNA)		mm below (S)
Timber tropical mm (LT)		mm above (LS)
Timber summer mm (LS)		mm above (S)
Timber winter mm (LW)		mm below (LS)
Timber winter North Atlantic mm (LWNA)		mm below (LS)
Allowance for fresh water for all freeboards other than timber mm.
Allowance for fresh water for timber freeboards mm.
The upper edge of the deck line from which these freeboards are measured ismm deck at side.

GRAPHIC IS NOT DISPLAYED, SEE C.R.C., C. 1441, P. 12555

Date of initial or periodical survey

This is to certify that this ship has been surveyed and that the freeboards have been assigned and load lines shown above have been marked in accordance with the International Convention on Load Lines, 1966.

This certificate is valid until , subject to periodical inspections in accordance with Article 14(1)(c) of the Convention.

Issued atonday of19

(Here follows the seal of the Minister and marking to show that the certificate has been registered by the Chairman or, in a case where the Assigning Authority is not the Chairman, the signature of the person competent to sign certificates for the Assigning Authority.)

†Letters indicating the name of the Assigning Authority.

This is to certify that at a periodical inspection required by Article 14(1)(c) of the Convention, this ship was found to comply with the relevant provisions of the Convention.

Place	Date
Signature of Surveyor	Authority or Organization
Place	Date
Signature of Surveyor	Authority or Organization
Place	Date
Signature of Surveyor	Authority or Organization
Place	Date
Signature of Surveyor	Authority or Organization

The provisions of the Convention being fully complied with by this ship, the validity of this certificate is, in accordance with Article 19(2) of the Convention, extended until

Place	Date
Signature of Surveyor	Authority or Organization

INTERNATIONAL LOAD LINE EXEMPTION CERTIFICATE

Form L.L.2A

Reg. No.

Issued under the provisions of the International Convention on Load Lines, 1966, under the authority of the Government of Canada by the Chairman of the Board of Steamship Inspection.

Name of Ship	Distinctive Number or Letters	Port of Registry
This is to certify that the above-mentioned ship is exempted from the provisions of the 1966 Convention, under the authority conferred by Article .... of the Convention referred to above.
The provisions of the Convention from which the ship is exempted under Article 6(2) are:
The voyage for which exemption is granted under Article 6(4) is:
From:
To:
Conditions, if any, on which the exemption is granted under Article
		Seal
The certificate is valid until subject, where appropriate, to periodical inspections in accordance with Article 14(1)(c) of the Convention.
Issued at Ottawa on
Registered
Chairman of the Board of Steamship Inspection
This is to certify that this ship continues to comply with the conditions under which this exemption was granted.
Place	Date
Signature of Steamship Inspector
Place	Date
Signature of Steamship Inspector
Place	Date
Signature of Steamship Inspector
Place	Date
Signature of Steamship Inspector
This ship continues to comply with the conditions under which this exemption was granted and the validity of this certificate is, in accordance with Article 19(4)(a) of the Convention, extended until
Place	Date
Signature of Steamship Inspector

INTERNATIONAL LOAD LINE CERTIFICATE

Form L.L.2B

Reg. No.

Issued under the provisions of the International Load Line Convention, 1930, under the authority of the Government of Canada by the Minister of Transport.

Name of Ship	Distinctive Number or Letters	Port of Registry	Gross Tonnage
Freeboard from Deck Line***		Load Line***
Tropical mm mm (T)		mm above (S)
Summer mm (S)		Upper edge of line through centre of ring
Winter mm (W)		mm below (S)
Winter North Atlantic mm (WNA)		mm below (S)
Timber tropical mm (LT)		mm above (LS)
Timber summer mm (LS)		mm above (S)
Timber winter mm (LW)		mm below (LS)
Timber winter North Atlantic mm (LWNA)		mm below (LS)
Allowance for fresh water for all freeboards mm.
The upper edge of the deckline from which these freeboards are measured is mm deck at side.

GRAPHIC IS NOT DISPLAYED, SEE C.R.C., C. 1441, P. 12558

Date of survey
This is to certify that this ship has been surveyed and that the freeboards have been assigned and load lines shown above have been marked in accordance with the International Load Line Convention, 1930.
This certificate is issued at the request of the Government of and is valid until subject to periodical inspections in accordance with Article 14(3)(c) of the Convention.
Issued at Ottawa on
Registered
Chairman of the Board of Steamship Inspection
This is to certify that at a periodical inspection required by Article 14(3)(c) of the Convention, this ship was found to comply with the relevant provisions of the Convention.
Place	Date
Signature of Steamship Inspector
Place	Date
Signature of Steamship Inspector
Place	Date
Signature of Steamship Inspector
Place	Date
Signature of Steamship Inspector

LOCAL LOAD LINE CERTIFICATE

Form L.L.3

Reg. No.

Issued under the provisions of the Canada Shipping Act by (Here follows either “The Chairman of the Board of Steamship Inspection” or, in a case where the Assigning Authority is not the Chairman, the name of the Assigning Authority)

Name of Ship	Official Number	Port of Registry	Length(L) in metres	Gross Tonnage
Subject to any limitations endorsed hereon, this certificate is valid for voyages between Canadian ports and for inland voyages.
Type of ship (where applicable) *
Freeboard from Deck Line**		Load Line**
Tropical mm (T)		mm above (S)
Summer mm (S)		Upper edge of line through centre of ring
Winter mm (W)		mm below (S)
Timber summer mm (LS)		mm above (S)
Timber winter mm (LW)		mm below (LS)
The allowance, subject to Note 2, for fresh water for all freeboards other than timber mm.
The allowance, subject to Note 2, for fresh water for timber freeboards mm.
The upper edge of the deck line from which these freeboards are measured is deck at side.

GRAPHIC IS NOT DISPLAYED, SEE C.R.C., C. 1441, P. 12560

Date of initial or periodical survey
This is to certify that this ship has been surveyed and that the freeboards have been assigned and load lines shown above have been marked in accordance with the ***
This certificate is valid until , subject to periodical inspection in accordance with the relevant provisions of the ***
(Here follows the seal of the Minister and marking to show that the certificate has been registered by the Chairman or, in a case where the Assigning Authority is not the Chairman, the signature of the person competent to sign certificates for the Assigning Authority.)
†Letters indicating the name of the Assigning Authority.
This is to certify that a periodical inspection required by the ***, this ship was found to comply with the relevant provisions thereof.
Place	Date
Signature of Surveyor	Authority or Organization
Place	Date
Signature of Surveyor	Authority or Organization
Place	Date
Signature of Surveyor	Authority or Organization
Place	Date
Signature of Surveyor	Authority or Organization

The provisions of the Load Line Regulations (Sea) being fully complied with by this ship, the validity of this certificate is extended until

Place	Date
Signature of Surveyor	Authority or Organization

Limitations:
NOTES:
	1.	Except as provided otherwise in regulations respecting load line submersion allowances for a ship on the Great Lakes or River St. Lawrence, where a ship departs from a port situated on a river or inland waters, deeper loading shall be permitted corresponding to the weight of fuel and all other materials required for consumption between the point of departure and the sea.
	2.	Except as provided otherwise in regulations respecting load line submersion allowances for a ship on the Great Lakes or River St. Lawrence, where a ship is in fresh water of unit density the appropriate load line may be submerged by the amount of the fresh water allowance shown on this certificate. Where the density is other than unity, an allowance shall be made proportional to the difference between 1.025 and the actual density.
	3.	Attention is drawn to the legislative requirement that this certificate be framed and posted up in some conspicuous place on board the ship, and be kept so framed and posted for as long as the certificate is in force and the ship is in use.