Navigation (Load Lines) Regulations (Cth)

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STATUTORY RULES

1968 No. 126

___________

REGULATIONS UNDER THE NAVIGATION ACT 1912-1968.*

I, THE GOVERNOR-GENERAL in and over the Commonwealth of Australia, acting with the advice of the Federal Executive Council, hereby make the following Regulations under the Navigation Act 1912-1968.

Dated this twenty-fourth day of October, 1968.

CASEY

Governor-General.

By His Excellency’s Command,

Sgd Ian Sinclair

Minister of State for Shipping and Transport.

_________

NAVIGATION (LOAD LINES) REGULATIONS

Part I.—Preliminary.

Citation.

1.These Regulations may be cited as the Navigation (Load Lines) Regulations.

Commencement.

2. These Regulations shall come into operation on the date fixed under subsection (2.) of section 2 of the Navigation Act 1968 as the date on which the provisions of that Act (other than sections 1, 2 and 15) shall come into operation.

Parts.

3. These Regulations are divided into Parts, as follows:—

Part I.—Preliminary (Regulations 1-4).

Part II.—Interpretation (Regulations 5-19).

Part III.—Conditions of Assignment (Regulations 20-40).

Part IV.—Strength of Ships (Regulation 41).

Part V.—Initial Surveys (Regulations 42-46).

Part VI.—Calculation and Assignment of Freeboards (Regulations 47-67).

Part VII.—Marking of Load Lines and Associated Marks (Regulations 68-76).

Part VIII.—Periodical Surveys and Periodical Inspections (Regulations 77-83).

Part IX.—Extension of Load Line Certificates (Regulation 84).

Part X.—Cancellation of Certificates (Regulations 85-87).

Part XI.—Appropriate Load Lines (Regulation 88).

Part XII.—Appropriate Subdivision Load Lines (Regulation 89).

Part XIII.—Modification of Regulations in their Application to Ships less than 79 feet in length (Regulation 90).

Part XIV.—Application of Regulations to Existing Ships (Regulation 91).

Part XV.—Miscellaneous (Regulations 92-99).

Repeal.

4. The Navigation (Load Lines) Regulations (being Statutory Rules 1935, No. 66; Statutory Rules 1951, No. 138; Statutory Rules 1956, No. 6; Statutory Rules 1959, No. 53; Statutory Rules 1962, No. 88; Statutory Rules 1967, No. 62; and Statutory Rules 1968, No. 35) are repealed.

* Notified in the Commonwealth Gazette on 1968.

18125/68—Price 45c 10/10.10.68

Part II.—Interpretation.

Definitions.

5. In these Regulations, unless the contrary intention appears—

“after perpendicular”, in relation to a ship, means a line drawn at the after end of the ship parallel to, and at a distance equal to the length of the ship from, the forward perpendicular for the ship;

“amidships” means the vertical plane situated at the middle of the length of the ship and at right angles to the centre line plane of the ship;

“approved” means approved by the Minister;

“assigning authority” means—

(a) in a case where an application is made to a survey authority for the assignment of freeboards—the survey authority to which the application is made; and

(b) in any other case—the Minister;

“classed ship” means a ship in respect of which there is in force a classification certificate;

“flush deck ship” means a ship that has no superstructure on the freeboard deck;

“forward perpendicular”, in relation to a ship, means a line drawn at right angles to the waterline used for the purpose of ascertaining the length of the ship at the intersection of the waterline with the fore side of the stem of the ship;

“perpendiculars” mean the forward and after perpendiculars;

“prescribed authority” means—

(a) in relation to the port of Sydney, Melbourne, Brisbane, Port Adelaide, Fremantle or Hobart—the Regional Controller for the State in which the port is situated;

(b) in relation to a port in the Northern Territory of Australia—the representative, at the port, of the Regional Controller for the State of Western Australia; and

(c) in relation to any other port—the representative, at the port, of the Regional Controller for the State in which the port is situated;

“Regional Controller” means a person for the time being performing the duties of an office of Regional Controller, Department of Shipping and Transport;

“summer moulded draught”, in relation to a ship, means the distance equal to the difference between—

(a) the actual depth to the deck line position of the ship; and

(b) the summer freeboard assigned to the ship in accordance with regulation 62 of these Regulations;

“superstructure deck” means a deck forming the top of a superstructure;

“surveyor” means a surveyor appointed under section 190 of the Act;

“survey authority” means a survey authority authorized in writing by the Minister to issue certificates under section 222 of the Act;

“the Act” means the Navigation Act 1912-1968;

“the actual depth to the deck line position”, in relation to a ship, means the distance measured vertically amidships from the line from which the moulded depth of the ship is, by regulation 9 of these Regulations, measured to the deck line position;

“the Convention” has the same meaning as the Load Line Convention has in Part IV. of the Act;

“the deck line position”, in relation to a ship, means the position of the line that, under regulation 70 of these Regulations, constitutes, or is to constitute, the deck line for the ship;

“Type A ship” means a ship—

(a) that is designed to carry only liquid cargoes in bulk;

(b) that has a high integrity of the exposed deck by reason of the fact that its cargo tanks have only small access openings closed by watertight gasketed covers of steel or equivalent material; and

(c) that has a high degree of safety against flooding, resulting from the low permeability of loaded cargo spaces and the degree of subdivision provided being, in the case of a ship that exceeds 492 feet in length, a degree of safety against flooding that is not less than that referred to in regulation 48 of these Regulations;

“Type B ship” means a ship other than a Type A ship;

“unclassed ship” means a ship that is not a classed ship;

“weathertight”, in relation to a fitting in a ship, means that in any sea conditions water will not penetrate into the ship.

General provisions.

6.—(1.) A reference in these Regulations to a ship shall be read—

(a) as a reference to a ship whether or not it is engaged on international voyages; and

(b) as including a reference to a ship the length of which is less than 79 feet,

and these Regulations apply accordingly.

(2.) Where, in pursuance of an exemption granted under section 221 of the Act, a ship, or the master or owner of a ship—

(a) is exempted from compliance with a provision of these Regulations; or

(b) is exempted from compliance with a provision of these Regulations subject to compliance with the conditions subject to which the exemption is granted,

that provision does not apply to or in relation to the ship or to the master and owner of the ship, or that provision applies to and in relation to the ship and to the master or owner of the ship subject to those conditions, as the case requires.

(3.) A reference in these Regulations to a Schedule by number shall be read as a reference to the Schedule so numbered to these Regulations.

(4.) In these Regulations, a reference to the load line certificate for a ship shall, in the case of a ship registered in Australia, be read as a reference to the certificate issued under paragraph (a) or paragraph (b), as the case may be, of section 222 of the Act in respect of the ship.

(5.) Where a word or phrase used in these Regulations is defined in section 187a of the Act, that word or phrase as so used has, unless the contrary intention appears, the meaning given to it in that section.

(6.) Where a word or phrase used in these Regulations is defined in section 218 of the Act, that word or phrase as so used has, unless the contrary intention appears, the meaning given to it in that section.

Length of a ship.

7.—(1.) In these Regulations, a reference to the length of a ship shall be read as a reference to—

(a) a distance equal to 96 per cent of the total length of the ship measured on a waterline that is—

(i) in the case of a ship other than a ship referred to in either of the next two sub-paragraphs—at a distance, from the top of the keel, equal to 85 per cent of the least moulded depth of the ship;

(ii) in the case of a wood ship or a composite ship—at a distance, from the lower edge of the keel rabbet, equal to 85 per cent of the least moulded depth of the ship; or

(iii) in the case of a ship in which the form at the lower part of the midship section is of a hollow character or in which thick garboards are fitted—at a distance, from the point where the line of the flat of the bottom continued inwards cuts the side of the keel of the ship, equal to 85 per cent of the least moulded depth of the ship; or

(b) if the distance measured from the fore side of the stem to the axis of the rudder stock on that waterline is greater than the distance applicable under the last preceding paragraph—that greater distance.

(2.) In the case of a ship designed with a rake of keel, the waterline on which the total length of the ship is to be measured for the purposes of the last preceding sub-regulation shall be parallel to the designed waterline.

Breadth of a ship.

8. In these Regulations, a reference to the breadth of a ship shall be read as a reference to its maximum breadth measured amidships to the moulded line of the frame if the ship has a metal shell or to the outer surface of the hull if the ship has a shell of any other material.

Moulded depth.

9.—(1.) In these Regulations, a reference to the moulded depth of a ship at any part of the ship shall, subject to this regulation, be read as a reference to the vertical distance measured from the top of the keel to the top of the freeboard deck beam at side at that part and a reference to the least moulded depth of the ship shall be read as a reference to the shortest of those distances.

(2.) In the case of a wood ship or a composite ship, the reference in the last preceding sub-regulation to the top of the keel shall be read as a reference to the lower edge of the keel rabbet.

(3.) In the case of a ship in which the form at the lower part of the midship section is of a hollow character or thick garboards are fitted, the reference in sub-regulation (1.) of this regulation to the top of the keel shall be read as a reference to the point where the line of the flat of the bottom continued inwards cuts the side of the keel of the ship.

(4.) In the case of a ship having rounded gunwales, the reference in sub-regulation (1.) of this regulation to the top of the freeboard deck beam at side shall be read as a reference to the point of intersection of the moulded lines of the deck and the side, the moulded lines being treated as extending as though the gunwale were of angular design.

(5.) In the case of a ship having a stepped freeboard deck, the raised part of which extends over the point at which the moulded depth is to be determined, the reference in sub-regulation (1.) of this regulation to the top of the freeboard deck beam at side shall be read as a reference to a line of reference extending from the lower part of the deck along a line parallel to the raised part.

Depth for freeboard.

10.—(1.) In these Regulations, a reference to the depth for freeboard of a ship shall, subject to sub-regulation (3.) of this regulation, be read as a reference to the moulded depth amidships of the ship plus, if a freeboard deck stringer plate is fitted, the thickness of that plate and, if the exposed freeboard deck is sheathed from side to side with wood, plus the distance ascertained in accordance with the prescribed formula.

(2.) For the purposes of the last preceding sub-regulation, the prescribed formula is—

(a) in a case where the exposed freeboard deck is sheathed throughout its length, the formula—

T

( L - S )

; or

L

 

(b) in any other case, the formula—

T

( l )

,

L

where—

T is the mean thickness in feet of the exposed sheathing clear of deck openings;

L is the length in feet of the ship;

S is the total length in feet of superstructures as ascertained in accordance with regulation 17 of these Regulations; and

l is the length in feet of the exposed freeboard deck that is sheathed.

(3.) In the case of a ship having a rounded gunwale with a radius greater than 4 per cent of the breadth of the ship or having topsides of unusual form, a reference to the depth for freeboard of the ship shall be read as a reference to the depth for freeboard, ascertained in accordance with this regulation, of a ship having a midship section with vertical topsides and with the same round of beam and with an area of topside section equal to that provided by the actual midship section.

Block coefficient.

11. In these Regulations, a reference to the block coefficient for a ship shall be read as a reference to the number (Cb) ascertained in accordance with the formula—

where—

B is the breadth of the ship in feet;

d1 is 85 per cent of the least moulded depth of the ship in feet;

L is the length of the ship in feet; and

 is—

(a) if the ship is a ship with a metal shell, the volume in cubic feet of the moulded displacement of the ship, excluding bossing; or

(b) if the ship is a ship with a shell of any other material, the volume in cubic feet of displacement to the outer surfaces of the hull,

both taken at a moulded draught of d1.

References to position 1 and position 2.

12. In these Regulations—

(a) a reference to hatchways, doorways, ventilators or other openings in position 1 in a ship shall be read as a reference to hatchways, doorways, ventilators or other openings upon exposed freeboard decks and raised quarter decks or upon exposed superstructure decks situated forward of a point located a quarter of the length of the ship abaft the forward perpendicular; and

(b) a reference to hatchways, doorways, ventilators or other openings in position 2 in a ship shall be read as a reference to hatchways, doorways, ventilators or other openings upon exposed superstructure decks situated abaft a point located a quarter of the length of the ship from the forward perpendicular.

Freeboard deck.

13.—(1.) In these Regulations, a reference to the freeboard deck of a ship shall, subject to this regulation, be read as a reference to the uppermost complete deck, exposed to weather and sea, which has permanent means of closing all openings in the part exposed to the weather and below which all openings in the sides of the ship are fitted with permanent means of watertight closing.

(2.) In the case of a ship in which the uppermost complete deck exposed to the weather referred to in the last preceding sub-regulation is a discontinuous deck, the reference to the freeboard deck of the ship shall be deemed to be a reference to a line of reference formed by the lowest line of that discontinuous deck and to the continuation of that line parallel to the upper part of that discontinuous deck.

(3.) The assigning authority may, at the request of the owner of a ship, specify that a lower deck, being a complete and permanent lower deck continuous in a fore and aft direction at least between the machinery space and peak bulkheads and continuous athwartships is to be the freeboard deck of the ship, and, in that case, the reference to the freeboard deck of that ship shall be read as a reference to the deck so specified.

(4.) Where the deck specified under the last preceding sub-regulation is stepped, the reference to the freeboard deck of the ship shall be deemed to be a reference to a line of reference formed by the lowest line of the deck and the continuation of that line parallel to the upper part of the deck.

Superstructures.

14.—(1.) In these Regulations, a reference to a superstructure of a ship shall be read as a reference to a decked structure (including a raised quarter deck) on the freeboard deck extending from side to side of the ship or with the side plating of the structure not being inboard of the shell plating by more than 4 per cent of the breadth of the ship.

(2.) Where, in pursuance of sub-regulation (3.) of the last preceding regulation, a lower deck is specified as the freeboard deck of a ship, any part of the hull which extends above the deck so specified shall be deemed to be, for the purposes of these Regulations, a superstructure.

Enclosed superstructure.

15.—(1.) In these Regulations, a reference to an enclosed superstructure shall be read as a reference to a superstructure with—

(a) enclosing bulkheads of efficient construction;

(b) access openings, if any, in the bulkheads fitted with doors complying with the requirements of regulation 21 of these Regulations; and

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

(2.) A bridge or poop shall not be deemed to be an enclosed superstructure for the purposes of these Regulations unless means of access are provided for the crew to reach machinery and other working spaces inside the bridge or poop from the uppermost completely exposed deck or from a higher deck, being means available at all times when the access openings in the bulkheads enclosing the bridge or poop are closed.

Height and standard height of superstructure.

16.—(1.) In these Regulations, a reference to the height of a superstructure shall be read as a reference to the least vertical height measured at side from the top of the superstructure deck beams to the top of the freeboard deck beams.

(2.) In these Regulations, a reference to the standard height of a superstructure or trunk shall, subject to the next succeeding sub-regulation, be read as a reference to the standard height ascertained in accordance with the following table:—

Length of Ship (in feet)

Standard Height (in feet)

Raised Quarter Deck

All other Superstructures

98.5 or less..............................................................................

3.0

5.9

246..........................................................................................

3.9

5.9

410 or more............................................................................

5.9

7.5

(3.) A reference to the standard height of a superstructure or trunk having a length that is between 98.5 feet and 246 feet or between 246 feet and 410 feet shall be ascertained by linear interpolation.

Length of superstructure.

17.—(1.) In these Regulations, a reference to the length of a superstructure shall, subject to this regulation, be read as a reference to the mean length of the parts of the superstructure which lie within the length of the ship.

(2.) Where the end bulkhead of an enclosed superstructure extends in a fair convex curve beyond its intersection with the superstructure sides, a reference to the length of the superstructure shall be read as a reference to the mean length increased by two-thirds of the fore and aft extent of the portion of superstructure formed by the curved bulkhead, and the maximum curvature that may be taken into account in determining the increase is one-half of the breadth of the superstructure at the point of intersection of the curved end of the superstructure with its side.

(3.) Where a superstructure bulkhead has a recess, whether decked over or not, the length of the superstructure shall be reduced by a distance ascertained by dividing the area of the recess by the breadth of the ship at the middle of the length of the recess.

(4.) If the recess referred to in the last preceding sub-regulation is unsymmetrical about the centre line of the ship, the area of the recess shall be deemed to be twice the area of the larger portion.

(5.) Where there is an extension to a superstructure having a breadth on each side of the centre line not less than 30 per cent of the breadth of the ship, the effective length of the superstructure shall be increased by an assumed equivalent superstructure bulkhead in the form of a parabola extending from the extension at the centre line passing through the junction of the actual superstructure bulkhead with the sides of the extension and extending to the sides of the ship and being completely confined within the boundary of the superstructure and its extensions.

Effective length of enclosed superstructure.

18.—(1.) In these Regulations, a reference to the effective length of an enclosed superstructure of standard height or of a height greater than standard height shall, subject to this regulation, be read as a reference to the length of the superstructure.

(2.) Where an enclosed superstructure of standard height or of a height greater than standard height is set in from the sides of the ship by not more than 4 per cent of the breadth of the ship, the reference to the effective length of an enclosed superstructure shall be read as a reference to the length of the superstructure modified in accordance with the ratio—

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.

(3.) Where an enclosed superstructure is set in for a part of its length, the modification referred to in the last preceding sub-regulation shall be applied only to the part that is set in.

(4.) Where the height of an enclosed superstructure is less than its standard height, the reference to the effective length of the enclosed superstructure shall be read as a reference to its length reduced in accordance with the ratio of its actual height to its standard height.

(5.) Where a raised quarter deck is fitted with an intact front bulkhead, the reference to the effective length of the superstructure shall be read as a reference to—

(a) the length of the raised quarter deck; or

(b) if that length exceeds 60 per cent of the length of the ship—60 per cent of the length of the ship.

(6.) Where a raised quarter deck is fitted with a front bulkhead that is not intact, the raised quarter deck shall, for the purposes of these Regulations, be deemed to be a poop of less than standard height.

(7.) For the purposes of these Regulations, a superstructure that is not enclosed does not have an effective length.

When trunks deemed to be efficient.

19.—(1.) For the purposes of these Regulations, a trunk or a similar structure in a ship which does not extend to the sides of the ship shall be deemed to be efficient if it complies with the following conditions:—

(a) the trunk or structure shall be at least as strong as a superstructure;

(b) any hatchways in the ship in way of the trunk shall be in the trunk deck;

(c) the hatchway coamings and covers shall comply with the requirements of regulations 23 to 28 (inclusive) of these Regulations;

(d) the width of the trunk deck stringer shall be such as to provide a satisfactory gangway and sufficient lateral stiffness;

(e) a permanent working platform fore and aft fitted with guard rails shall be provided by the trunk deck or by detached trunks connected to superstructures by efficient permanent gangways;

(f) ventilators shall be protected by the trunk and by watertight covers if the height of the ventilators is less than that specified in regulation 32 of these Regulations;

(g) open rails shall be fitted on the weather parts of the freeboard deck in way of the trunk for at least half their length;

(h) the machinery casings shall be protected by the trunk, by a superstructure of at least standard height, or by a deckhouse of standard height and of equivalent strength;

(i) the breadth of the trunk shall be at least 60 per cent of the breadth of the ship; and

(j) where there is no superstructure, the length of the trunk shall be at least 60 per cent of the length of the ship.

(2.) A reference in these Regulations to the effective length of an efficient trunk shall be read as a reference to the full length of an efficient trunk reduced in accordance with the ratio of its mean breadth to the breadth of the ship.

(3.) Where the height of an efficient trunk is less than its standard height, the reference to the effective length of the trunk shall be read as a reference to its effective length ascertained in accordance with the last preceding sub-regulation reduced in accordance with the ratio of its actual height to its standard height.

(4.) Where the height of hatchway coamings on the trunk deck is less than that required under sub-regulation (1.) of regulation 23 of these Regulations, the reference in the last preceding sub-regulation to the actual height of the trunk shall be read as a reference to its actual height reduced by the difference between the actual height of the coamings and that height required by sub-regulation (1.) of regulation 23 of these Regulations.

(5.) For the purposes of the last two preceding sub-regulations, the standard height of a trunk is the standard height of a superstructure (other than a raised quarter deck).

(6.) Nothing in paragraph (b) of sub-regulation (1.) of this regulation prevents a ship from being provided with small openings on the freeboard deck if watertight covers for those openings are fitted.

Part III.—Conditions of Assignment.

Superstructure end bulkheads.

20. Bulkheads at exposed ends of enclosed superstructures shall be of approved construction.

Doors in superstructure end bulkheads.

21.—(1.) The access openings in a bulkhead at the end of an enclosed superstructure shall be fitted with doors which shall, unless otherwise approved, open outwards, shall be so arranged that they can be operated from both sides of the bulkhead, shall be made of steel or other equivalent material, shall be permanently and strongly attached to the bulkhead and shall be so framed, stiffened and fitted that—

(a) the whole structure is of a strength equivalent to that which the bulkhead would have if it was not pierced; and

(b) the whole structure is so constructed that, when those openings are closed, the structure is weathertight.

(2.) The doors so fitted in the openings in an end bulkhead shall be secured in a weathertight condition by gaskets and clamping devices permanently attached to the bulkhead or to the doors.

(3.) The height of the sills of access openings in bulkheads at the ends of the enclosed superstructure shall be at least 1 foot 3 inches above the deck or, if another height above the deck is specified in this Part, that other height.

(4.) Unless otherwise approved, portable sills shall not be provided.

Means of closing hatchways in position 1 and position 2.

22. Cargo and other hatchways in position 1 and in position 2 in a ship shall be closed only—

(a) by portable covers supported by portable beams and secured weathertight by tarpaulins and battening devices;

(b) by pontoon covers secured weathertight by tarpaulins and battening devices; or

(c) by weathertight covers made of steel or other equivalent material fitted with gaskets and clamping devices.

Requirements with regard to coamings.

23.—(1.) The coamings of hatchways in position 1 and position 2 in a ship shall be of substantial construction and, subject to these Regulations, the height above the deck of coamings in position 1 shall be at least 1 foot 11½ inches and the height above the deck of coamings in position 2 shall be at least 1 foot 5½ inches.

(2.) Where—

(a) hatchways in a ship are closed by weathertight covers made of steel or other equivalent material fitted with gaskets and clamping devices; and

(b) the assigning authority is satisfied that the safety of the ship in any sea conditions will not be impaired by so doing,

the assigning authority may—

(c) determine that the coamings of those hatchways shall be of a height that is less than that specified in the last preceding sub-regulation; or

(d) determine that coamings for those hatchways be omitted,

and, in such a case, the coamings shall be of the height so specified or the coamings may be omitted.

Appropriate assumed loads.

24. For the purposes of sub-regulations (3.) and (4.) of regulation 25, sub-regulation (2.) of regulation 26 and sub-regulation (2.) of regulation 28 of these Regulations—

(a) the appropriate assumed load for a hatchway in position 1 in a ship 328 feet in length or over is 358 pounds per square foot and for a hatchway in position 2 in such a ship is 266 pounds per square foot;

(b) the appropriate assumed load for a hatchway in position 1 in a ship that is 79 feet in length is 205 pounds per square foot and for a hatchway in position 2 in such a ship is 154 pounds per square foot; and

(c) the appropriate assumed load for a hatchway in position 1 or a hatchway in position 2 in a ship the length of which is between 79 feet and 328 feet shall be obtained by linear interpolation.

Requirements for hatchways closed by portable covers and tarpaulins.

25.—(1.) The width of each bearing surface in the case of hatchway covers secured weathertight by tarpaulins and battening devices shall be at least 2½ inches.

(2.) Where such a hatchway cover is made of wood, the finished thickness shall be at least 2¾ inches in association with a span of not more than 4.9 feet.

(3.) Where such a hatchway cover is made of mild steel—

(a) the strength of the material shall be such that, when the maximum stress calculated by using an assumed load that is not less than the appropriate assumed load for a hatchway in the position in the ship in which the hatchway is situated is multiplied by the factor 4.25, the result will not exceed the minimum ultimate strength of the material; and

(b) the hatchway cover shall be so designed as to limit the deflexion to not more than 0.0028 times the span under the appropriate assumed load.

(4.) Where a portable beam for supporting such a hatchway cover is made of mild steel—

(a) the strength of the material shall be such that, when the maximum stress calculated by using an assumed load that is not less than the appropriate assumed load for a hatchway in the position in the ship in which the hatchway is situated is multiplied by the factor 5, the result will not exceed the minimum ultimate strength of the material; and

(b) the portable beam shall be so designed as to limit the deflexion to not more than 0.0022 times the span under the appropriate assumed load.

(5.) Carriers or sockets for portable beams used for supporting hatchway covers shall be of substantial construction and shall provide means for the efficient fitting and securing of the beams, and, where rolling types of beams are used, the arrangement shall be such that the beams remain properly in position when the hatchway is closed.

Requirements for hatchways closed by pontoon covers.

26.—(1.) The width of each bearing surface in the case of a pontoon cover secured weathertight by tarpaulins and battening devices shall be at least 2½ inches.

(2.) Where a pontoon cover is made of mild steel—

(a) the strength of the material shall be such that, when the maximum stress calculated by using an assumed load that is not less than the appropriate assumed load for a hatchway in the position in the ship in which the hatchway is situated is multiplied by the factor 5, the result will not exceed the minimum ultimate strength of the material;

(b) the pontoon covers shall be so designed as to limit the deflexion to not more than 0.0022 times the span under the appropriate assumed load; and

(c) the mild steel plating forming the top of the pontoon cover shall have a thickness of not less than 1 per cent of the spacing of the stiffeners or 0.24 inches, whichever is the greater.

(3.) Where a pontoon cover is made of a material other than mild steel, the strength and stiffness of the pontoon cover shall be equivalent to that prescribed by the last preceding sub-regulation for a pontoon cover of mild steel.

Tarpaulins and battening devices.

27. When the weathertightness of hatchway covers is secured by tarpaulins—

(a) at least two layers of tarpaulin shall be provided for each hatchway;

(b) the tarpaulin shall be waterproof, of ample strength, of a material of approved standard weight and quality and in good condition;

(c) battens shall be efficient and in good condition;

(d) wedges shall—

(i) be efficient and in good condition;

(ii) be of tough wood, or other equivalent material;

(iii) have a taper of not more than 1 in 6; and

(iv) be not less than ½ inch thick at the toes;

(e) cleats shall—

(i) be set to fit the taper of the wedges;

(ii) be at least 2½ inches in width;

(iii) be spaced not more than 1 foot 11½ inches centre to centre; and

(iv) the cleats along each side or end shall not be more than 6 inches from the hatch corners;

(f) in the case of a hatchway cover that is not more than 4.9 feet in length, at least one steel bar or other equivalent means shall be provided for the hatchway capable of efficiently and independently securing each section of hatchway cover after the tarpaulins are battened down; and

(g) in the case of a hatchway cover that is more than 4.9 feet in length, at least two steel bars or other means of the kind referred to in the last preceding paragraph shall be provided.

Requirements for hatchways closed weathertight by covers of steel or other equivalent material fitted with gaskets and clamping devices.

28.—(1.) Where hatchways are secured weathertight by hatch covers of steel fitted with gaskets and clamping devices, the covers shall be of substantial construction.

(2.) Where such a hatchway cover is made of mild steel—

(a) the strength of the material shall be such that when the maximum stress calculated by using an assumed load that is not less than the appropriate assumed load for a hatchway in the position in the ship in which the hatchway is situated is multiplied by the factor 4.25, the result will not exceed the minimum ultimate strength of the material;

(b) the hatchway cover shall be so designed as to limit the deflexion to not more than 0.0028 times the span under the appropriate assumed load; and

(c) the mild steel plating forming the top of the cover shall have a thickness of not less than 1 per cent of the spacing of the stiffeners or 0.24 inches, whichever is the greater.

(3.) Where such a hatchway cover is made of material other than mild steel, the strength and stiffness of the cover shall be equivalent to that prescribed by the last preceding sub-regulation for a cover of mild steel.

(4.) The means for securing and maintaining weathertightness shall be such that weathertightness will be maintained in any sea conditions.

Coamings and hatchways elsewhere than in positions 1 and 2.

29. Unless the assigning authority otherwise approves, coamings of hatchways and covers for hatchways on decks above the superstructure deck shall be capable of withstanding loads calculated on the basis set out in regulation 24 of these Regulations for coamings of hatchways and covers for hatchways in position 2.

Machinery space openings

30.—(1.) Machinery space openings in position 1 or in position 2 shall be properly framed and efficiently enclosed by steel casings of ample strength, the strength being determined according to the extent of the protection afforded to the casings by other structures.

(2.) Access openings in the steel casings shall be fitted with doors complying with the provisions of regulation 21 of these Regulations and the sills of the doors shall be not less than 1 foot 11½ inches above the deck if in position 1, and not less than 1 foot 3 inches above the deck if in position 2.

(3.) Other openings in the steel casings shall be fitted with equivalent covers permanently attached in their proper positions.

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

Miscellaneous openings in freeboard and superstructure decks.

31.—(1.) Manholes and flush scuttles in position 1 or in position 2 or within superstructures other than enclosed superstructures shall be closed by substantial covers capable of being made watertight and, 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.

(3.) Such an 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 and the doorways in such a deckhouse or companionway or the doorways to interior deck openings shall be fitted with doors complying with the provisions of sub-regulations (1.) and (2.) of regulation 21 of these Regulations.

(4.) Subject to the next succeeding sub-regulation, the height above the deck of sills to the doorways in deckhouses or companionways shall be not less than 1 foot 11½ inches in position 1, and not less than 1 foot 3 inches in position 2.

(5.) Where means of access from the uppermost complete exposed deck or from a higher deck are provided for the crew to reach machinery and other working spaces inside a bridge or poop that is an enclosed superstructure, the height above the deck of sills of doors in deckhouses or companionways in position 1 shall be not less than 1 foot 3 inches.

Ventilators.

32.—(1.) Ventilators in position 1 or position 2 to spaces below the freeboard deck or the deck of an enclosed superstructure shall have coamings of steel or other equivalent material, substantially constructed and efficiently connected to the deck and, where the coaming of any ventilator exceeds 2 feet 11½ inches in height above the deck, 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.) Ventilator openings in ships over 328 feet in length shall be provided with efficient weathertight closing appliances, which shall be conveniently stowed near the ventilators to which they are to be fitted.

(4.) Ventilator openings in ships of 328 feet or under in length shall be provided with efficient weathertight closing appliances which shall be permanently attached to the ventilators.

(5.) Ventilators in position 1 shall have coamings of a height of not less than 2 feet 11½ inches above the deck and ventilators in position 2 shall have coamings of a height of not less than 2 feet 6 inches above the deck, unless, in the case of ventilators in exposed positions, the assigning authority directs that the coamings shall have a greater height above the deck, and, if the assigning authority so directs, the coamings shall have that greater height.

(6.) Unless the assigning authority otherwise directs, sub-regulations (3.) and (4.) of this regulation do not apply to ventilators in position 1 the coamings of which extend to more than 14 feet 9½ inches above the deck and to ventilators in position 2 the coamings of which extend to 7 feet 6 inches above the deck.

Air pipes extending above the freeboard or superstructure decks.

33.—(1.) 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 and the height from the deck to the point where water may have access below shall, subject to the next succeeding sub-regulation, be not less than 2 feet 6 inches on the freeboard deck and shall be not less than 1 foot 5½ inches on the superstructure deck.

(2.) Where the heights referred to in the last preceding sub-regulation may interfere with the working of the ship, the assigning authority may, if satisfied that the closing arrangements and other circumstances justify a lower height, specify heights lower than those specified in that sub-regulation.

(3.) Satisfactory means, permanently attached, shall be provided for closing the openings of the air pipes.

Cargo ports and other similar openings.

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

(2.) The lower edge of the cargo ports and other openings shall not be below a line, drawn parallel to the freeboard deck at side, which has as its lowest point the upper edge of the uppermost load line assigned to the ship.

Discharges, inlets and scuppers.

35.—(1.) Each discharge, scupper and inlet 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 sub-regulations (1.) and (2.) of regulation 21 of these Regulations shall be fitted with efficient and accessible means for preventing water from passing inboard, being a means that consists of one automatic non-return valve with a positive means of closing it from a position above the freeboard deck in respect of each separate discharge.

(2.) Where the vertical distance from the summer load waterline to the inboard end of a discharge pipe referred to in the last preceding sub-regulation exceeds 1 per cent of the length of the ship, 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.

(3.) Where the vertical distance from the summer load waterline to the inboard end of a discharge pipe referred to in sub-regulation (1.) of this regulation exceeds 2 per cent of the length of the ship, the discharge may have a single automatic non-return valve without positive means of closing.

(4.) 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.

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

(6.) Scuppers and discharge pipes originating at any level and penetrating the shell either more than 1 foot 5½ inches below the freeboard deck or less than 1 foot 11½ inches above the summer load waterline shall be provided with a non-return valve at the shell.

(7.) Except in the case of a discharge referred to in sub-regulations (1.), (2.) and (3.) of this regulation, the requirements in the last preceding sub-regulation do not apply where the piping is of substantial thickness.

(8.) Scuppers leading from superstructures or deckhouses not fitted with doors complying with the requirements of sub-regulations (1.) and (2.) of regulation 21 of these Regulations shall be led overboard.

(9.) All valves and shell fittings required by this regulation shall be of steel, bronze or other approved ductile material and shall not be of ordinary cast iron.

(10.) All pipes referred to in this regulation shall be of steel or other equivalent material.

Side scuttles.

36.—(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.) A side scuttle shall not be fitted in such a position 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 or 1 foot 7+ inches above the load waterline, whichever is the greater distance.

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

(4.) Where an opening in a superstructure deck or in the top of a deckhouse on the freeboard deck which gives access to a space below the freeboard deck or to a space within an enclosed superstructure is protected by an efficient deckhouse fitted with side scuttles, only those side scuttles that give direct access to an open stairway shall be fitted with deadlights in accordance with this regulation.

Freeing ports.

37.—(1.) Where bulwarks on the weather portions of a freeboard deck or a superstructure deck form wells, adequate provision shall be made for rapidly freeing and draining the decks of water.

(2.) For the purposes of this regulation, adequate provision for rapidly freeing and draining the freeboard deck of water shall be deemed to have been made if there is provided on each side of the ship in each well on that deck a minimum freeing port area ascertained in accordance with the next seven succeeding sub-regulations.

(3.) Where the sheer in way of the well is standard or greater than standard and the length of the bulwark in the well is 66 feet or less, the minimum freeing port area is an area having the same number of square feet as the number obtained by the formula—

7.6 + 0.115 l.

(4.) Where the sheer in way of the well is standard or greater than standard and the length of the bulwark in the well exceeds 66 feet, the minimum freeing port area is an area having the same number of square feet as the number obtained by the formula—

0.23 l.

(5.) Where the average height of the bulwark exceeds 3 feet 10¾ inches, the area ascertained in accordance with whichever of the last two preceding sub-regulations is applicable shall be increased by an area having the same number of square feet as the number ascertained in accordance with the formula—

0.04 × l × h1.

(6.) When the average height of the bulwark is less than 3 feet, the area ascertained in accordance with whichever of sub-regulations (3.) or (4.) of this regulation is applicable shall be reduced by an area having the same number of square feet as the number ascertained in accordance with the formula—

0.04 × l × h2.

(7.) For the purposes of the last four preceding sub-regulations—

“l” is the number equal to the number of feet in the length of the bulwark in the well, or if that length exceeds 0.7 times the length of the ship, 0.7 of the length of the ship;

“h1” is the difference in feet between the average height of the bulwark in the well and 3 feet 10¾ inches; and

“h2” is the difference in feet between the average height of the bulwark in the well and 3 feet.

(8.) Where there is no sheer in way of the well, the minimum freeing port area on each side of the ship in each well on the freeboard deck is the area that would have been applicable under sub-regulations (3.) to (6.) (inclusive) of this regulation if the sheer in way of the well had been standard increased by 50 per cent.

(9.) Where there is sheer in way of the well but it is less than standard, the minimum freeing port area on each side of the ship in each well on the freeboard deck is the area calculated in accordance with sub-regulations (3.) to (6.) (inclusive) of this regulation increased by a percentage obtained by linear interpolation, based on the sheer, between the area so calculated and the area ascertained in accordance with the last preceding sub-regulation.

(10.) The minimum freeing port on each side of the ship in each well on a superstructure deck is one-half of the area that would have been applicable under the last seven preceding sub-regulations if that deck had been a freeboard deck.

(11.) Where a ship fitted with a trunk is not fitted with open rails on the weather parts of the freeboard deck in way of the trunk for at least one-half of the length of the weather parts 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 in accordance with the following table:—

Breadth of hatchway or trunk in relation to the breadth of ship

Area of freeing ports in relation to the total area of the bulwarks

40 per cent or less.........................................................................................

20 per cent

75 per cent or more......................................................................................

10 per cent

Between 40 per cent and 75 per cent...........................................................

The percentage obtained by linear interpolation

(12.) In ships having superstructures which are open at either or both ends, adequate provision for freeing the space within those superstructures shall be provided.

(13.) The lower edges of the freeing ports shall be as near the deck as practicable, and 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 or, if there is no sheer in way of the well, the freeing port area shall spread along the length of the well.

(14.) All openings in the bulwarks referred to in this regulation shall be protected by rails or bars spaced not more than 9 inches apart and, 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, and securing appliances, if fitted to the shutters, shall be of approved construction.

(15.) In a flush deck ship, a deckhouse the breadth of which is at least 80 per cent of the breadth of a ship shall be deemed a superstructure for the purposes of this regulation if the passages along the side of the deckhouse do not exceed 4.9 feet in width or if a screened bulkhead that is completely across the ship is fitted at the forward end of the deckhouse.

(16.) For the purposes of sub-regulation (10.) of this regulation, a raised quarter deck shall be deemed to be a freeboard deck.

Protection for crew.

38.—(1.) Deckhouses used for the accommodation of the crew shall be of adequate strength.

(2.) Efficient guard rails, or bulwarks, having a height of not less than 3 feet 3½ inches above the deck or such lesser height as is approved shall be fitted on all exposed parts of the freeboard and superstructure decks, first tier deckhouses and superstructure ends.

(3.) The opening below the lowest course of the guard rails shall not exceed 9 inches, the other courses being not more than 1 foot 3 inches apart and, in the case of ships with rounded gunwales, the guard rail supports shall be placed on the flat of the deck.

(4.) Guard rails, life lines, gangways or underdeck passages 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 working 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 being provided above the deck cargo if there is no convenient passage on or below the deck of the ship.

(6.) This regulation does not apply to an unmanned barge.

Special conditions of assignment for Type A ships.

39.—(1.) Machinery casings on Type A ships shall be protected by an enclosed poop or bridge of at least standard height, or by a deckhouse of equal height and equivalent strength, but machinery casings may be exposed if there are no openings giving direct access from the freeboard deck to the machinery space and a door complying with the requirements of sub-regulations (1.) and (2.) of regulation 21 of these Regulations may be permitted in the machinery casing if the door 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.

(2.) If a Type A ship is fitted with a midship bridge or deckhouse, an efficiently constructed fore and aft permanent gangway of sufficient strength shall be fitted at the level of the superstructure deck between the poop and the midship bridge or deckhouse, or equivalent means of access shall be provided to carry out the purpose of such a gangway.

(3.) If a Type A ship is not fitted with a midship bridge or deckhouse, arrangements shall be provided to safeguard the crew in reaching all parts used in the working of the ship.

(4.) Safe and satisfactory access from the gangway level shall be available between different parts of the crew accommodation and between crew accommodation and the machinery space.

(5.) A Type A ship 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, and 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.

(7.) Exposed hatchways on the freeboard deck and on the forecastle deck and on the top of expansion trunks in a Type A ship shall be fitted with effective watertight covers of steel or other equivalent material and exposed hatchways in any other position shall be weathertight.

Information to be supplied for the master.

40. Unless the Minister has exempted a ship or ships included in a specified class of ships from compliance with this regulation, there shall be supplied on board a ship sufficient information, in an approved form, to enable the master of

the ship to arrange for the loading and ballasting of the ship in such a way to avoid the creation of any unacceptable stresses in the ship’s structure.

Part IV.—Strength of Ships.

Strength of ships.

41.—(1.) Freeboards shall not be assigned to a ship in accordance with Part VI. of these Regulations unless the general structural strength of the ship is sufficient to permit it to be loaded to draughts corresponding to the freeboards to be assigned to the ship in accordance with that Part.

(2.) A ship that has been built and maintained in accordance with the requirements of a survey authority shall be deemed to have the general structural strength required by the last preceding sub-regulation.

Part V.—Initial Surveys.

Initial surveys.

42. A ship shall be subjected to an initial survey under this Part before it is first issued with a load line certificate.

Applications for initial survey.

43.—(1.) An application for the initial survey of a ship under this Part shall be made—

(a) if freeboards are to be assigned by the Minister—to the prescribed authority at the port at which the ship is to be surveyed; or

(b) if freeboards are to be assigned by a survey authority—to the survey authority.

(2.) An application shall be accompanied by—

(a) a general arrangement plan;

(b) plans giving full details of—

(i) the transverse structure;

(ii) the longitudinal structure;

(iii) the stern frame, rudder and steering arrangements;

(iv) propeller shaft brackets;

(v) main engine seatings and main thrust seatings;

(vi) scuppers, discharges, sea inlets and tank venting together with their associated piping; and

(vii) the structure and closing appliances of openings in the exposed freeboard deck, in any exposed superstructure deck, in an exposed deck above the superstructure deck, in a superstructure end bulkhead and in the ship’s sides;

(c) details showing arrangements for the protection of the crew;

(d) details showing subdivision arrangements and calculations; and

(e) intact and damage stability data, including—

(i) a capacity plan;

(ii) hydrostatic curves; and

(iii) cross curves of stability.

(3.) The Minister, or the survey authority to which an application for a survey is made, may require the owner of a ship who has made application for a survey to furnish such additional plans and information as the Minister or survey authority considers necessary to enable the survey to be made and to enable load lines to be assigned to the ship.

(4.) The Minister or the survey authority may exempt an applicant from compliance with any of the requirements of sub-regulation (2.) of this regulation to the extent that he or it is satisfied that the furnishing of the plans or the information referred to in such a requirement is not necessary.

Nature of initial survey.

44.An initial survey shall consist of an inspection of the structure of the ship and those parts of the equipment of the ship that are referred to in Part III. of these Regulations—

(a) for the purpose of ascertaining that the structural strength of the ship is not less than that referred to in regulation 41 of these Regulations;

(b) for the purpose of ascertaining that the arrangements, material and scantlings comply, except to the extent that the Minister has, under section 221 of the Act, exempted the ship from compliance, with the conditions of assignment specified in Part III. of these Regulations in so far as those conditions are applicable in relation to the ship;

(c) for the purpose of the assignment of freeboards to the ship in accordance with these Regulations; and

(d) for the purpose of ascertaining that it has been marked in accordance with Part VII. of these Regulations.

Tests for weathertightness and watertightness.

45. Where, by these Regulations, the means of closing hatchways and other openings in a ship are required to be weathertight, or watertight, tests for weathertightness or watertightness, as the case may be, of those means shall be made at the initial survey of the ship.

Documents to be carried on the ship.

46. At the initial survey of a ship, the surveyor or survey authority shall ascertain whether or not—

(a) the stability information required under regulation 7 of the Navigation (Construction) Regulations is carried on the ship;

(b) the information referred to in regulation 40 of these Regulations is carried on the ship; and

(c) the statement referred to in regulation 93 of these Regulations is carried on the ship.

Part VI.—Calculation and Assignment of Freeboards.

Assignment of freeboards.

47.—(1.) Where an application has been made to the Minister for the assignment of freeboards and the surveyor reports to the Minister that the ship complies with the conditions of assignment applicable to the ship under Part III. of these Regulations and has the general structural strength referred to in Part IV. of these Regulations, the Minister shall assign freeboards to the ship in accordance with this Part or, in the case of a ship the length of which is less than 79 feet, in accordance with this Part as modified under Part XIII. of these Regulations.

(2.) Where an application is made to a survey authority for the assignment of freeboards to a ship and the survey authority is satisfied that the ship complies with the conditions of assignment applicable to the ship under Part III. of these Regulations and has the general structural strength referred to in Part IV. of these Regulations, the survey authority shall assign freeboards to the ship in accordance with this Part or, in the case of a ship the length of which is less than 79 feet, in accordance with this Part as modified under Part XIII. of these Regulations.

(3.) Where an application is made to the Minister or to a survey authority for the assignment of freeboards to a ship, being freeboards greater than those which would, apart from this sub-regulation, be assigned to the ship in accordance with this Part, the Minister or the survey authority, as the case may be, may, notwithstanding that the ship does not comply with all the conditions of assignment applicable to the ship under Part III. of these Regulations, assign such greater freeboards as, in his opinion, are reasonable having regard to the extent to which the ship complies with those conditions.

Damaged stability and subdivision criteria required for Type A ships.

48.—(1.) For the purposes of the assignment of freeboards, a ship shall not, for the purposes of these Regulations, be deemed to be a Type A ship unless—

(a) in the case of a ship that exceeds 492 feet in length but does not exceed 738 feet in length, and is so designed that, when loaded to the design summer load waterline, some compartments are filled and the remaining compartments are empty or partly filled, the ship will be able to withstand the flooding of any one of those empty or partly filled compartments at an assumed permeability of 0.95;

(b) in the case of a ship that exceeds 738 feet in length, is designed in the manner specified in the last preceding paragraph and is loaded in a manner referred to in that paragraph, the ship shall be able to withstand the flooding of any one of the empty or partly filled compartments at an assumed permeability of 0.95, assuming that the machinery space in the ship is a floodable compartment with an assumed permeability of 0.85; and

(c) when so flooded, the ship will remain afloat in a condition of equilibrium.

(2.) For the purposes of the last preceding sub-regulation—

(a) a ship shall be deemed to be able to withstand the flooding of empty or partly filled compartments at an assumed permeability specified in paragraph (a) or paragraph (b) of the last preceding sub-regulation; and

(b) a ship shall, when flooded to the extent referred to in paragraph (a) or paragraph (b) of that sub-regulation, be deemed to remain afloat in a condition of equilibrium,

if, on the assumptions specified in Part I. of the First Schedule being made—

(c) the angle of heel due to unsymmetrical flooding does not exceed 15 degrees or, if no part of the deck is immersed, the angle of heel due to unsymmetrical flooding does not exceed 17 degrees;

(d) with any part of the freeboard deck being immersed beyond the limits of flooding or with the margin of stability in the flooded condition being doubtful, the dynamic stability of the ship is such that the righting lever curve has a minimum range of 20 degrees beyond the position of equilibrium in association with a righting lever of at least 4 inches; and

(e) the metacentric height of the ship, after flooding and as calculated by the constant displacement method, is not less than 2 inches in the upright position.

Tabular freeboard to Type A ships 79 feet and over in length.

49. The tabular freeboard for a Type A ship—

(a) that is of a length specified in the Second Schedule is the freeboard specified in that Schedule for a ship of that length;

(b) that is of a length that is between any two consecutive lengths specified in the Second Schedule is the freeboard obtained by linear interpolation; and

(c) that exceeds 1,200 feet in length shall be such freeboard for a ship of that length as the Minister determines.

Tabular freeboard for Type B ships 79 feet and over in length.

50.—(1.) Subject to the next three succeeding regulations, the tabular freeboard for a Type B ship (including a lighter, barge or other ship without independent means of propulsion)—

(a) that is of a length specified in the Third Schedule is the freeboard specified in that Schedule for a ship of that length;

(b) that is of a length that is between any two consecutive lengths specified in the Third Schedule shall be obtained by linear interpolation: and

(c) that exceeds 1,200 feet in length shall be such freeboard for a ship of that length as the Minister determines.

(2.) Where the tabular freeboard for a Type B ship is reduced or increased in accordance with any of the next three succeeding regulations, the tabular freeboard as so increased or reduced shall, for the purposes of regulations 54 to 57 of these Regulations, be deemed to be the tabular freeboard for the ship.

Variation of tabular freeboard for Type B ships the hatchways of which are secured weathertight by hatchway covers of mild steel fitted with gaskets and clamping devices.

51.—(1.) In this regulation, a reference to a Type B ship is a Type B ship that exceeds 328 feet in length.

(2.) Where the hatchways in position 1 and in position 2 in a Type B ship are closed by weathertight covers made of mild steel or other equivalent material fitted with gaskets and clamping devices complying with the requirements of regulation 28 of these Regulations, the tabular freeboard for such a ship shall, if the ship complies with the requirements of this regulation, be reduced in accordance with this regulation.

(3.) A Type B ship shall not be assigned a reduction in freeboard under this regulation unless—

(a) the measures provided for the accommodation of the crew comply with the requirements of regulation 38 of these Regulations;

(b) the ship is fitted with freeing arrangements in accordance with regulation 37 of these Regulations;

(c) in the case of a ship in which coamings are not fitted to hatchways on the freeboard deck forward of a point located a quarter of the length of the ship abaft the forward perpendicular, the strength and stiffness of the covers for those hatchways shall be not less than 15 per cent more than the strength and stiffness ascertained in accordance with sub-regulation (2.) of regulation 28 of these Regulations;

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

(e) in the case of a ship of over 738 feet in length, the machinery space shall be treated as a floodable compartment but with a permeability of 0.85.

(4.) For the purposes of the last preceding sub-regulation a Type B ship shall be deemed to be a ship that will remain afloat in a satisfactory condition of equilibrium when loaded, and after flooding, to the extent referred to in paragraph (d) or (e) of that sub-regulation, or in both of those paragraphs, if, on the assumptions specified in Part I. of the First Schedule being made, the results specified in paragraphs (c), (d) and (e) of sub-regulation (2.) of regulation 48 are obtained.

(5.) The reduction in the tabular freeboard for a Type B ship which is by the last preceding sub-regulation deemed to be a ship that will remain afloat in a satisfactory condition of equilibrium is 60 per cent of the difference between the tabular freeboard specified in the Second Schedule for a ship of the length of the Type B ship and the tabular freeboard specified in the Third Schedule for a ship of the length of the Type B ship.

(6.) Where a Type B ship complies with the requirements specified in sub-regulation (3.) of this regulation and in addition—

(a) complies with the special conditions of assignment for a Type A ship specified in sub-regulations (1.) to (6.) (inclusive) of regulation 39 of these Regulations;

(b) the ship, when loaded to its summer load waterline and after flooding any two adjacent fore and aft compartments (not being machinery spaces) at an assumed permeability of 0.95, will remain afloat in a condition of equilibrium; and

(c) in the case of a ship that exceeds 728 feet in length, when loaded to its summer load waterline and after flooding the machinery space only at an assumed permeability of 0.85, will remain afloat in a condition of equilibrium,

the reduction in the tabular freeboard to be allowed under this regulation is the difference between the tabular freeboard specified in the Second Schedule for a ship of the length of the ship and the tabular freeboard specified in the Third Schedule for a ship of the length of the ship.

(7.) For the purposes of the last preceding sub-regulation a Type B. ship shall be deemed to be a ship that will remain afloat in a condition of equilibrium if, on the assumptions specified in Part I. of the First Schedule, as modified in accordance with Part II. of that Schedule, being made, the results specified in paragraphs (c), (d) and (e) of sub-regulation (2.) of regulation 48 of these Regulations are obtained.

Increase in tabular freeboard for Type B ships the weathertightness of which is secured by portable covers, tarpaulins and battening devices.

52. Where the hatchways in position 1 in a Type B ship are fitted with portable covers supported by portable beams and secured weathertight by tarpaulins and battening devices complying with toe requirements of regulation 25 of these Regulations, the tabular freeboard applicable to the ship under regulation 50 of these Regulations shall be increased—

(a) in the case of a ship of a length specified in the table in this regulation, by the freeboard increase specified in that table for a ship of that length;

(b) in the case of a ship having a length that is between any two consecutive lengths specified in that table, by a freeboard increase obtained by linear interpolation; and

(c) in the case of a ship over 660 feet in length, by such freeboard increase for a ship of that length as the Minister determines.

Length of ship

Freeboard increase

Length of ship

Freeboard increase

Length of ship

Freeboard increase

feet

inches

feet

inches

feet

inches

350 and below

450

6.4

560

11.4

2.0

460

7.0

570

11.8

360

2.3

470

7.6

580

12.1

370

2.6

480

8.2

590

12.5

380

2.9

490

8.7

600

12.8

390

3.3

500

9.2

610

13.1

400

3.7

510

9.6

620

13.4

410

4.2

520

10.0

630

13.6

420

4.7

530

10.4

640

13.9

430

5.2

540

10.7

650

14.1

440

5.8

550

11.0

660

14.3

Correction to tabular freeboard for a Type B ship not exceeding 328 feet in length.

53. The tabular freeboard, applicable under regulation 50 of these Regulations as increased under the last preceding regulation, if applicable, for a Type B ship of between 79 feet and 328 feet (inclusive) in length, having enclosed superstructures with an effective length of up to 35 per cent of the length of the ship, shall

be increased in accordance with the following formula:—

where—

L is the length of the ship in feet; and

E is the effective length of superstructure in feet as ascertained in regulation 18 of these Regulations.

Correction for block coefficient.

54. Where the block coefficient for a ship exceeds 0.68, the tabular freeboard for the ship or, if that freeboard has been modified in accordance with the preceding provisions of this Part, that tabular freeboard as so modified shall be increased to the distance equal to the distance ascertained by multiplying that freeboard by the following factor:—

where—

Cb is the block coefficient for the ship.

Correction for depth.

55.—(1.) Where the depth for freeboard of a ship exceeds a distance in feet equal to one-fifteenth part of the length of the ship, the tabular freeboard for the ship or, if that freeboard has been modified in accordance with the preceding provisions of this Part, that tabular freeboard as so modified shall be increased in accordance with the following formula:—

where—

D is the number of feet in the depth for freeboard of the ship;

L is the number of feet in the length of the ship; and

R is  if the length of the ship is less than 393.6 feet, or 3 if the length of the ship is or exceeds 393.6 feet.

(2.) Where—

(a) the depth for freeboard of the ship is less than a distance in feet equal to one-fifteenth part of the length of the ship; and

(b) the ship has an enclosed superstructure covering at least 60 per cent of the length and placed on either side of amidships, or has a complete trunk or combination of detached enclosed superstructures and trunks which extend all fore and aft,

the freeboard shall be reduced in accordance with the formula specified in the last preceding sub-regulation.

(3.) Where the height of the superstructure or trunk is less than its standard height, the reduction in the freeboard referred to in the last preceding sub-regulation shall be made in accordance with the ratio of its actual height to its standard height.

Deductions for superstructures and trunks.

56.—(1.) The tabular freeboard for a ship or, if that freeboard has been modified in accordance with the preceding provisions of this Part, that tabular freeboard as so modified shall be reduced in accordance with this regulation.

(2.) Where the total of the effective lengths of superstructures and trunks of the ship is equal to the length of the ship, the deduction shall be—

(a) 14 inches in the case of a ship the length of which is 79 feet;

(b) 34 inches in the case of a ship the length of which is 279 feet;

(c) 42 inches in the case of a ship the length of which is 400 feet or over; and

(d) in the case of a ship the length of which is an intermediate length, such distance as is ascertained by linear interpolation.

(3.) Where the total of the effective lengths of superstructures and trunks in a ship is less than the length of the ship, the deduction shall, subject to the succeeding provisions of this regulation, be a percentage ascertained in accordance with whichever of the following tables is applicable:—

PERCENTAGE OF DEDUCTION FOR TYPE A SHIPS

____

Total Effective Length of Superstructures and Trunks

0

0.1L

0.2L

0.3L

0.4L

0.5L

0.6L

0.7L

0.8L

0.9L

1.0L

Percentage of deduction for all types of superstructures..

0

7

14

21

31

41

52

63

75.3

87.7

100

PERCENTAGE OF DEDUCTION FOR TYPE B SHIPS

____

Line

Total Effective Length of Superstructures and Trunks

0

0.1L

0.2L

0.3L

0.4L

0.5L

0.6L

0.7L

0.8L

0.9L

1.0L

Ships with forecastle and without detached bridge

I

0

5

10

15

23.5

32

46

63

75.3

87.7

100

Ships with forecastle and detached bridge..

II

0

6.3

12.7

19

27.5

36

46

63

75.3

87.7

100

(4.) For a Type B ship, the percentage of deduction shall be ascertained in accordance with the following provisions:—

(a) where the effective length of a bridge is less than 20 per cent of the length of the ship, the percentages shall be ascertained by linear interpolation between lines I and II in the table for Type B ships in the last preceding sub-regulation;

(b) where the effective length of a forecastle is more than 40 per cent of the length of the ship, the percentages shall be ascertained from line II in the table for Type B ships in that sub-regulation; and

(c) where the effective length of a forecastle is less than 7 per cent of the length of the ship, the percentages in line II in the table for Type B ships in that sub-regulation shall be reduced in accordance with the following formula:—

where—

f is the effective length of the forecastle; and

L is the length of the ship.

(5.) Where the total effective lengths of superstructures and trunks are intermediate lengths, the reduction under sub-regulation (3.) of this regulation shall be ascertained by linear interpolation.

Sheer.

57.—(1.) The tabular freeboard for a ship or, if that freeboard has been modified in accordance with the preceding provisions of this Part, that tabular freeboard as so modified is, if the sheer of the ship varies from the standard sheer for the ship, subject to modification in accordance with this regulation.

(2.) For the purposes of this regulation, the ordinates of the standard sheer profile for a ship are those ascertained in accordance with the following table:—

Standard Sheer Profile (L in feet)

—

Station

Ordinate (in inches)

Factor

After half

After perpendicular................................

0.1L + 10

1

½ from A.P............................................

0.0444L + 4.44

3

⅓from A.P............................................

0.0111L + 1.11

3

Amidships.............................................

0

1

Forward half

Amidships.............................................

0

1

⅓ from F.P............................................

0.0222L + 2.22

3

⅙ from F.P.............................................

0.0888L + 8.88

3

Forward perpendicular..........................

0.2L + 20

1

(3.) For the purposes of the last preceding sub-regulation—

L is the length of the ship;

A.P. is the after perpendicular; and

F.P. is the forward perpendicular.

(4.) For the purposes of this regulation, the sheer of the ship shall—

(a) subject to the next three succeeding paragraphs, be measured from the freeboard deck at side to a line of reference drawn parallel to the keel through the sheer line amidships;

(b) in a ship designed with a rake of keel, be measured from the freeboard deck at side to a line of reference drawn parallel to the design load waterline through the sheer line amidships;

(c) in a flush deck ship and in a ship with a detached superstructure, be measured from the freeboard deck at side to a line of reference drawn parallel to whichever of the lines of reference referred to in either of the last two preceding paragraphs is applicable;

(d) in a ship with top sides of unusual form in which there is a step or break in the top sides, be measured from the equivalent deck line at side ascertained in accordance with sub-regulation (3.) of regulation 10 of these Regulations (disregarding any distance ascertained in accordance with sub-regulation (2.) of that regulation) to whichever of the lines of reference is applicable under paragraph (a) or (b) of this sub-regulation;

(e) in a ship with a superstructure of standard height which extends along the whole length of the freeboard deck, be measured from the superstructure deck at side to a line of reference drawn parallel to the keel through the sheer line amidships on the superstructure deck or, if the ship is designed with a rake of keel, to a line of reference drawn parallel to the design load waterline through the sheer line amidships on the superstructure deck; and

(f) in a ship where the deck of an enclosed superstructure has at least the same sheer as that of the exposed freeboard deck, be measured at the superstructure deck in way of the enclosed portion of the freeboard deck.

(5.) The variation of the difference between the sheer profile of a ship and the standard sheer profile for that ship shall be made in accordance with the following provisions:—

(a) the four ordinates of the sheer profile of the ship and of the standard profile for the ship in the forward half and the after half shall be multiplied by the appropriate factors given in the table in sub-regulation (2.) of this regulation;

(b) the difference between the sum so ascertained in respect of the products obtained by the multiplication of the four ordinates in the forward half of the sheer profile of the ship and the products obtained by the multiplication of the four ordinates in the standard sheer profile for the ship divided by 8 measures the deficiency or excess of the sheer in the forward half of the ship;

(c) the difference between the sum so ascertained in respect of the products obtained by the multiplication of the four ordinates in the after half of the sheer profile of the ship and the products obtained by the multiplication of the four ordinates in the standard sheer profile for the ship divided by 8 measures the deficiency or excess of the sheer in the aft half of the ship; and

(d) the arithmetical mean of the excess or deficiency so ascertained for the forward half and for the after half is, for the purposes of this regulation, but subject to the next two succeeding sub-regulations, the excess or deficiency, as the case requires, of the sheer of the ship.

(6.) Where the after half of the sheer profile of the ship has an excess of sheer and the forward half of the sheer profile has a deficiency of sheer, the excess in sheer obtained by the after half shall not be taken into account, and only the deficiency in the forward half shall be taken into account, for the purposes of this regulation.

(7.) Where the forward half of the sheer profile of the ship has an excess of sheer and the after half has a deficiency in sheer, the following provisions apply:—

(a) where the deficiency of sheer in the after half does not exceed 25 per cent of the standard sheer for the ship, both the excess in sheer and the deficiency in sheer shall be taken into consideration for the purposes of this regulation;

(b) where the deficiency in the sheer of the ship in the after half exceeds 50 per cent of the standard sheer for the ship, the excess in the forward half shall not be taken into account, and only the deficiency in the sheer aft shall be taken into account, for the purposes of this regulation; and

(c) where the deficiency of the sheer in the after half of the ship is between 50 per cent and 25 per cent of the standard sheer for the ship, the excess sheer to an extent ascertained by linear interpolation shall be taken into consideration, and the deficiency in sheer of the after part of the ship shall be taken into consideration, for the purposes of this regulation.

(8.) In the case of a ship that has an enclosed poop or forecastle of standard height or of a greater height than standard height with a greater sheer than the sheer of the freeboard deck, being a ship in respect of which the provisions of

(i) during the winter seasonal period, namely the period commencing on the sixteenth day of December in one year and ending on the fifteenth day of February in the next succeeding year—is its winter load line;

(ii) during the summer seasonal period, namely the period commencing on the sixteenth day of February in a year and ending on the fifteenth day of December in that year—is its summer load line; and

(b) in the case of a ship not exceeding 328 feet in length—

(i) during the winter seasonal period specified in paragraph (a) of the last preceding item—is its winter load line; and

(ii) during the summer seasonal period specified in paragraph (b) of the last preceding item—is its summer load line.

4

For a ship in the North Pacific Winter Seasonal Zone, being that part of the North Pacific Ocean bounded on the south by the parallel of latitude 50° N from the east coast of the Union of Soviet Socialist Republics 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, the appropriate load line for the ship—

(a) during the winter seasonal period, namely the period commencing on the sixteenth day of October in one year and ending on the fifteenth day of April in the next succeeding year—is its winter load line; and

(b) during the summer seasonal period, namely the period commencing on the sixteenth day of April in a year and ending on the fifteenth day of October in that year—is its summer load line.

Fourth Schedule—continued

Item No.

Specification of Zones, Areas, Seasonal Periods and Appropriate Load Lines

Southern Winter Seasonal Zone

5

(1) For a ship in the Southern Winter Seasonal Zone, being the zone the northern boundary of which 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, the appropriate load line for the ship—

(a) during the winter seasonal period, namely the period commencing on the sixteenth day of April in a year and ending on the fifteenth day of October in that year—is its winter load line; and

(b) during the summer seasonal period, namely the period commencing on the sixteenth day of October in one year and ending on the fifteenth day of April in the next succeeding year—is its summer load line.

(2) For the purposes of this Schedule, Valparaiso shall be deemed to be on the boundary line between the Summer Zone and Southern Winter Seasonal Zone.

Tropical Zone

6

(1) For a ship at any time in the Tropical Zone, being the zone—

(a) the northern boundary of which 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 around 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 Vietnam 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; and

(b) the southern boundary of which 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 coast and the north coast 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 coast of Australia and the coast of 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, the appropriate load line for the ship is its tropical load line.

(2) For the purposes of this Schedule—

(a) each of the following areas shall be deemed to be included in the Tropical Zone:—

(i) Port Said, the Suez Canal, the Red Sea and that part of the Gulf of Aden west of the meridian of longitude 45° E;

(ii) that part of the Persian Gulf to the west of the meridian of longitude 59° E; and

(iii) the area bounded by the parallel of latitude 22° S from the east coast of Australia to the Great Barrier Reef, then the Great Barrier Reef to latitude 11° S, thence the southern boundary of the Tropical Zone;

(b) Aden shall be deemed to be on the boundary line between the Tropical Zone and the Seasonal Tropical Area; and

(c) Berbera shall be deemed to be on the boundary of the Tropical Zone and the Seasonal Tropical Area.

Fourth Schedule—continued

Item No.

Specification of Zones, Areas, Seasonal Periods and Appropriate Load Lines

Seasonal Tropical Areas

7

For a ship in the North Atlantic Seasonal Tropical Area, being the area bounded—

(a) 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;

(b) on the west by the coast of the American continent; and

(c) on the south and east by the northern boundary of the Tropical Zone,

the appropriate load line for the ship—

(d) during the tropical seasonal period, namely, the period commencing on the first day of November in one year and ending oh the fifteenth day of July in the next succeeding year—is its tropical load line; and

(e) during the summer seasonal period, namely, the period commencing on the sixteenth day of July in a year and ending on the thirty-first day of October in that year—is its summer load line.

8

For a ship in the Arabian Sea Seasonal Tropical Area, being the area bounded—

(a) 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;

(b) on the north and east by the coast of Pakistan and the coast of India; and

(c) on the south by the northern boundary of the Tropical Zone,

the appropriate load line for the ship—

(d) during the tropical seasonal period, namely, the period commencing on the first day of September in one year and ending on the thirty-first day of May in the next succeeding year—is its tropical load line; and

(e) during the summer seasonal period, namely, the period commencing on the first day of June in a year and ending on the thirty-first day of August in that year—is its summer load line.

9

For a ship in the Bay of Bengal Seasonal Tropical Area, being that area north of the northern boundary of the Tropical Zone, the appropriate load line for the ship—

(a) during the tropical seasonal period, namely, the period commencing on the first day of December in one year and ending on the thirtieth day of April in the next succeeding year—is its tropical load line; and

(b) during the summer seasonal period, namely, the period commencing on the first day of May in a year and ending on the thirtieth day of November in that year—is its summer load line.

10

For a ship in the South Indian Ocean Seasonal Tropical Area, being the area bounded—

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

(b) on the south by the parallel of latitude 20° S; and

(c) 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,

the appropriate load line for the ship—

(d) during the tropical seasonal period, namely, the period commencing on the first day of April in a year and ending on the thirtieth day of November in that year—is its tropical load line; and

(e) during the summer seasonal period, namely, the period commencing on the first day of December in one year and ending on the thirty-first day of March in the next succeeding year—is its summer load line.

11

For a ship in the South Indian Ocean Seasonal Tropical Area, being the area bounded—

(a) on the north by the southern boundary of the Tropical Zone;

(b) on the east by the coast of Australia;

(c) 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; and

(d) on the west by the meridian of longitude 51° 30′ E,

the appropriate load line for the ship—

(e) during the tropical seasonal period, namely, the period commencing on the first day of May in a year and ending on the thirtieth day of November in that year—is its tropical load line; and

(f) during the summer seasonal period, namely, the period commencing on the first day of December in one year and ending on the thirtieth day of April in the next succeeding year—is its summer load line.

Fourth Schedule—continued

Item No.

Specification of Zones, Areas, Seasonal Periods and Appropriate Load Lines

12

(1) For a ship in the China Sea Seasonal Tropical Area, being the area bounded—

(a) on the west and north by the coasts of Vietnam and China from latitude 10° N to Hong Kong;

(b) 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; and

(c) on the south by the parallel of latitude 10º N, the appropriate load line for the ship—

(d) during the tropical seasonal period, namely, the period commencing on the twenty-first day of January in a year and ending on the thirtieth day of April in that year—is its tropical load line; and

(e) during the summer seasonal period, namely, the period commencing on the first day of May in one year and ending on the twentieth day of January in the next succeeding year—is its summer load line.

(2) For the purposes of this Schedule—

(a) Hong Kong shall be deemed to be on the boundary of the Seasonal Tropical Area referred to in this item and the Summer Zone; and

(b) Sual shall be deemed to be on the boundary of the Seasonal Tropical Area referred to in this item and the Summer Zone.

13

For a ship in the North Pacific Ocean Seasonal Tropical Area No. 1, being the area bounded—

(a) on the north by the parallel of latitude 25º N;

(b) on the west by the meridian of longitude 160° E;

(c) on the south by the parallel of latitude 13° N; and

(d) on the east by the meridian of longitude 130° W, the appropriate load line for the ship—

(e) during the tropical seasonal period, namely, the period commencing on the first day of April in a year and ending on the thirty-first day of October in that year—is its tropical load line; and

(f) during the summer seasonal period, namely, the period commencing on the first day of November in one year and ending on the thirty-first day of March in the next succeeding year—is its summer load line.

14

For a ship in the North Pacific Ocean Seasonal Tropical Area No. 2, being the area bounded—

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

(b) 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; and

(c) on the south by the parallel of latitude 13° N, the appropriate load line for the ship—•

(d) during the tropical seasonal periods, namely—

(i) the period commencing on the first day of March in a year and ending on the thirtieth day of June in that year; and

(ii) the period commencing on the first day of November in one year and ending on the thirtieth day of November in that year—is its tropical load line; and

(e) during the summer seasonal periods, namely—

(i) the period commencing on the first day of July in a year and ending on the thirty-first day of October in that year; and

(ii) the period commencing on the first day of December in one year and ending on the twenty-eighth day or twenty-ninth day of February in the next succeeding year—is its summer load line.

15

For a ship in the South Pacific Ocean Seasonal Tropical Area No. 1, namely, that part of the Gulf of Carpentaria south of latitude 11º S, the appropriate load line for the ship—

(a) during the tropical seasonal period, namely, the period commencing on the first day of April in a year and ending on the thirtieth day of November in that year—is its tropical load line; and

(b) during the summer seasonal period, namely, the period commencing on the first day of December in one year and ending on the thirty-first day of March in the next succeeding year—is its summer load line.

Fourth Schedule—continued

Item No.

Specification of Zones, Areas, Seasonal Periods and Appropriate Load Lines

16

For a ship in the South Pacific Ocean Seasonal Tropical Area No. 2, being the area bounded—

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

(b) 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; and

(c) 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, the appropriate load line for the ship—

(d) during the tropical seasonal period, namely, the period commencing on the first day of April in a year and ending on the thirtieth day of November in that year—is its tropical load line; and

(e) during the summer seasonal period, namely, the period commencing on the first day of December in one year and ending on the thirty-first day of March in the next succeeding year—is its summer load line.

Summer Zones

17

(1) For a ship that is at any time elsewhere than in a zone or area referred to in the preceding items of this Schedule, the appropriate load line for the ship is, subject to the next succeeding sub-item, its summer load line.

(2) For a ship not exceeding 328 feet in length in the area bounded—

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

(b) 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; and

(c) on the south by the parallel of latitude 36° N,

the appropriate load line for the ship—

(d) during the winter seasonal period, namely, the period commencing on the first day of November in one year and ending on the thirty-first day of March in the next succeeding year—is its winter load line; and

(e) during the summer seasonal period, namely, the period commencing on the first day of April in a year and ending on the thirty-first day of October in that year—is its summer load line.

Enclosed Seas

18

(1) Subject to the next succeeding sub-item, for a ship that is at any time in that part of the Baltic Sea east of the parallel of latitude of the Skaw in the Skagerrak, the appropriate load line for the ship is its summer load line.

(2) For a ship not exceeding 328 feet in length in that part of the Baltic Sea referred to in the last preceding sub-item, the appropriate load line for the ship—

(a) during the winter seasonal period, namely, the period commencing on the first day of November in one year and ending on the thirty-first day of March in the next year—is its winter load line; and

(b) during the summer seasonal period, namely, the period commencing on the first day of April in a year and ending on the thirty-first day of October in that year—is its summer load line.

(3) This item has effect notwithstanding anything contained in items 1 to 16 (inclusive) of this Schedule.

19

(1) Subject to the next succeeding sub-item, the appropriate load line for a ship that is at any time in the Black Sea is its summer load line.

(2) For a ship not exceeding 328 feet in length in that part of the Black Sea north of latitude 44° N the appropriate load line for the ship—

(a) during the winter seasonal period, namely, the period commencing on the first day of December in one year and ending on the twenty-eighth day or twenty-ninth day of February in the next succeeding year—is its winter load line; and

(b) during the summer seasonal period, namely, the period commencing on the first day of March in a year and ending on the thirtieth day of November in that year—is its summer load line.

(3) This item has effect notwithstanding anything contained in items 1 to 16 (inclusive) of this Schedule.

Fourth Schedule—continued

Item No.

Specification of Zones, Areas, Seasonal Periods and Appropriate Load Lines

20

(1) Subject to the next succeeding sub-item, the appropriate load line for a ship that is at any time in the Mediterranean Sea is its summer load line.

(2) For a ship not exceeding 328 feet in length in that part of the Mediterranean Sea bounded—

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

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

(c) 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,

the appropriate load line for the ship—

(d) during the winter seasonal period, namely, the period commencing on the sixteenth day of December in one year and ending on the fifteenth day of March in the next succeeding year—is its winter load line; and

(e) during the summer seasonal period, namely, the period commencing on the sixteenth day of March in a year and ending on the fifteenth day of December in that year—is its summer load line.

(3) This item has effect notwithstanding anything contained in items 1 to 16 (inclusive) of this Schedule.

21

(1) Subject to the next succeeding sub-item, the appropriate load line for a ship that is at any time in that part of the Sea of Japan that is south of the parallel of latitude 50º N is its summer load line.

(2) For a ship not exceeding 328 feet in length in that part of the Sea of Japan lying 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, the appropriate load line for the ship—

(a) during the winter seasonal period, namely, the period commencing on the first day of December in one year and ending on the twenty-eighth day or twenty-ninth day of February in the next succeeding year—is its winter load line; and

(b) during the summer seasonal period, namely, the period commencing on the first day of March in a year and ending on the thirtieth day of November in that year—is its summer load line.

(3) This item has effect notwithstanding anything contained in items 1 to 16 (inclusive) of this Schedule.

Winter North Atlantic Area

22

(1) For a ship not exceeding 328 feet in length in that part of the North Atlantic Winter Seasonal Zone II, as described in item 2 of this Schedule, which lies between the meridians 15° W and 50° W, the appropriate load line for the ship during the winter seasonal period, namely, the period commencing on the first day of November in one year and ending on the thirty-first day of March in the next succeeding year is its winter north atlantic load line.

(2) For a ship not exceeding 328 feet in length in the North Atlantic Winter Seasonal Zone I, as described in item 1 of this Schedule, the appropriate load line for the ship during the winter seasonal period, namely, the period commencing on the sixteenth day of October in one year and ending on the fifteenth day of April in the next succeeding year—is its winter north atlantic load line.

(3) For the purposes of the last preceding sub-item, the Shetland Islands shall be deemed to be on the boundary between the North Atlantic Winter Seasonal Zone I and the North Atlantic Winter Seasonal Zone II.

(4) This item has effect notwithstanding anything contained in items 1 and 2 of this Schedule.

Fourth Schedule—continued

Item No.

Specification of Zones, Areas, Seasonal Periods and Appropriate Load Lines

Timber Ships

23

For a ship on which timber load lines are marked and which is carrying a cargo of timber stowed on an uncovered part of a freeboard deck or superstructure deck in accordance with Regulation 44 of Annex I to the Convention—

 (a) the appropriate load line for the ship at a time is its summer timber load line if, but for this item, the appropriate load line for the ship under the preceding provisions of this Schedule would, at that time, have been its summer load line;

(b) the appropriate load line for the ship at a time is its winter timber load line if, but for this item, the appropriate load line for the ship under the preceding provisions of this Schedule would, at that time, have been its winter load line;

(c) the appropriate load line for the ship at a time is its tropical timber load line if, but for this item, the appropriate load line for the ship under the preceding provisions of this Schedule would, at that time, have been its tropical load line; and

(d) the appropriate load line for the ship at a time is its winter North Atlantic timber load line if, but for this item, the appropriate load line for the ship under the preceding provisions of this Schedule would, at that time, have been its winter North Atlantic line.

Sailing Ships

24

(1) For a sailing ship the appropriate load line for the ship is its winter north atlantic load line at any time when it is in that part of the North Atlantic Ocean referred to in item 22 of this Schedule.

(2) For a sailing ship at any other time, the appropriate load line for the ship is the upper edge of the horizontal line forming part of the load line mark for the ship.

Ships referred to in sub-regulation (4.) of regulation 71 of these Regulations

25

For a ship on which the circular mark referred to in regulation 71 of these Regulations is marked in the position referred to in sub-regulation (4.) of that regulation, the appropriate load line for the ship at all times is, notwithstanding anything in the preceding items of this Division, its summer load line.

FIFTH SCHEDULE Regulation 98.

SCALE OF FEES

Gross tonnage

Fees

Column 1

Column 2

Column 3

Column 4

$

$

$

$

Under 150 tons.............................................

36

15

111

16

150 tons or over but under 500................

67

24

232

31

500 tons or over but under 1,000.............

92

33

344

47

1,000 tons or over but under 2,000............

123

43

477

65

2,000 tons or over but under 4,000............

158

55

649

81

4,000 tons or over but under 6,000............

197

59

822

91

6,000 tons or over but under 8,000............

224

62

958

91

8,000 tons or over but under 10,000..........

240

68

1,100

91

10,000 tons and over...................................

243

71

1,100 plus $142 for

91

every additional 2,000 tons or part thereof in excess of 9,999 tons

                    

________________________

By Authority. A. J. Arthur, Commonwealth Government Printer, Canberra.

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