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S.I. No. 424/2001 - Merchant Shipping (Load Line) Rules, 2001
Table of Provisions (31)
Statutory Text (31 Articles)
1. These Rules replace the Load Line Rules of 1968.
2. The Rules apply the provisions of the International Convention on Load Lines, 1966 as amended by the Protocol of 1988 thereto, to all Irish ships which go to sea, with certain exceptions. They also apply to all sea-going foreign ships within Irish waters.
3. The Rules enable the Minister to authorise persons or organisations to act as Assigning Authorities for the purpose of the Rules.
4. Application
PART II
Surveys and Certificates
5. Assignment of Freeboards
6. Initial, renewal and annual surveys
7. Issue of appropriate certificates
8. Duration and extension of certificates
9. Certificates ceasing to be valid, and surrender and cancellation of certificates
10. Issue of exemption certificates
11. Non -Irish Ships
PART III
Load Lines and Marks
12. Marking
13. Baltic Sea
This sea bounded by the parallel of latitude of The Skaw in the Skagerrak is included in the Summer Zones.
However, for ships of 100 metres or less in length, it is a Winter Seasonal Area.
Seasonal periods
WINTER
1st November to 31st March.
SUMMER
1st April to 31st October.
14. (1) Where bulwarks on the weather portions of the freeboard deck, a raised quarter deck or a superstructure deck form wells, efficient provision shall be made for rapidly freeing the decks of water in bulk and for draining them, and in particular the requirements set out in subparagraphs (2) to (9) shall be complied with.
(2) Except as otherwise provided in subparagraphs (4) and (5), the freeing port area (A) for each well shall -
(a) if the well is on the freeboard deck or on a raised quarter-deck, be not less than the area ascertained in accordance with subparagraph (3); and
(b) if the well is on a superstructure deck, other than a raised quarter-deck be not less than one half of the area given by subparagraph (3).
(3) (a) Subject to subparagraph (c) below, where the length (1) of a bulwark in the well is 20 metres or less -
(A) =0.7+0.035 (1) (square metres); and
(b) Subject to subparagraph (c) below, where (1) exceeds 20 metres,
(A)=0.07 (1) (square metres).
The length (1) need in no case be greater than 0.7(L).
(c) If the bulwark is more than 1.2 metres in average height the required area shall be increased by 0.004 square metres per metre of length of well for each 0.1 metre difference in height. If the bulwark is less than 0.9 metre in average height, the required area may be deceased by 0.004 square metre per metre of length of well for each 0.1 metre difference in height.
(4) (a) If the deck on which the well is situated has no sheer, the freeing port area shall be the area ascertained in accordance with subparagraph (3) increased by 50 per cent.
(b) If the deck on which the well is situated has sheer less than standard sheer, the freeing port area shall be the area ascertained in accordance with subparagraph (3) increased by a percentage to be obtained by linear interpolation.
(c) If the deck on which the well is situated has sheer, two thirds of the freeing port area shall be situated in the half of the well which is nearest to the lowest point of the sheer.
(5) The lower edge of every freeing port shall be as near to the deck as practicable.
(6) Every freeing port more than 230 millimetres in depth shall be protected by rails or bars so fixed that the distance between the lowest rail or bar and the lower edge of the freeing port does not exceed 230 millimetres.
(7) Every freeing port fitted with a shutter shall have sufficient clearance to prevent jamming of the shutter, and the shutter hinges shall have pins or bearings of efficient non-corrodible material.
(8) Efficient provision shall be made for freeing water from any superstructure other than enclosed superstructure.
(9) Where a ship fitted with a trunk does not comply with the requirements of paragraph 10(2)(b)(vi) of Schedule 4, “Freeboards”, or where continuous or substantially continuous hatchway side coamings are fitted between detached superstructures, the minimum area of the freeing port openings shall be calculated from the following table
BREADTH OF HATCHWAY OR TRUNK IN RELATION TO THE BREADTH OF SHIP
AREA OF FREEING PORTS IN RELATION TO THE TOTAL AREA OF THE BULWARKS
40% or less
20%
75% or more
10%
The area of freeing ports at intermediate breadths shall be obtained by linear interpolation.
Protection of the crew
15.
(1) Every deckhouse used for the accommodation of members of the crew shall be of efficient construction.
(2) Except as otherwise provided in subparagraph (3), all exposed parts of the freeboard deck and of every superstructure deck shall be fitted at their perimeter with efficient guard rails or guard wires and stanchions complying with the requirements of subparagraph (4), or with bulwarks. In either case this protection shall be at least 1 metre in height from the deck.
(3) The height specified in subparagraph (2) may be reduced at a particular point if -
(a) the normal working of the ship would be unreasonably impeded; and
(b) adequate protection is provided at that point.
(4) Guard rails or guard wires fitted in accordance with subparagraph (2) shall consist of courses of rails or wires supported by stanchions efficiently secured to the deck. The opening between the lowest course of the rails or wires and the deck shall not exceed 230 millimetres in height and no opening above that course of rails or wires shall exceed 380mm in height. Where the ship has rounded gunwales the stanchions shall be secured at the perimeter of the flat of the deck.
(5) Gangways, underdeck passages and all other means of access used by members of the crew to pass between their quarters, the machinery space and any other space in the ship in the course of their necessary work shall be so designed and constructed, and be fitted, where necessary, with life lines, access ladders guard rails, guard wires, hand rails or other safety fittings, as to afford effective protection for the crew.
(6) Deck cargo carried on any ship shall be so stowed that any opening which is in way of the cargo and which gives access to and from the crew's quarters, the machinery space and all other parts used in the necessary work of the ship, can be properly closed and secured against the admission of water. Effective protection for the crew in the form of guard rails or life lines shall be provided above the deck cargo if there is no convenient passage on or below the deck of the ship.
(7) The requirements of this paragraph shall not apply in the case of unmanned barges.
PART II - SPECIAL REQUIREMENTS APPLICABLE TO TYPE “A” SHIPS
Application
16.
The requirements of paragraphs 17 to 20 apply only to Type “A” ships.
Machinery casings
17.
(1) Subject to subparagraph (2), every casing enclosing a machinery space opening in Position 1 or Position 2 shall be protected by either -
(a) an enclosed poop or bridge of at least standard height; or
(b) a deckhouse of equal height and equivalent strength and weathertightness.
(2) Subparagraph (1) shall not apply and the casing need not be protected if -
(a) there is no opening in the casing which gives direct access from the freeboard deck to the machinery space; or
(b) the only opening in the casing has a steel weathertight door and leads to a space or passage way which is as strongly constructed as the casing and is separated from the stairway to the machinery space by a second steel weathertight door.
Gangway and access
18.
(1) References in this paragraph to a poop or detached bridge apply also to a deckhouse fitted in lieu of and serving the purpose of a poop or detached bridge.
(2) Access between the poop and the detached bridge shall be by means of either -
(a) a permanent and efficiently constructed gangway of substantial strength. The gangway shall be at the level of the superstructure deck and have a platform at least 1 metre in width and of non-slip material. Efficient means of access from gangway level to the deck shall be provided at each terminal point. The platform shall be fitted on each side throughout its length with guard rails or guard wires supported by stanchions. Such rails or wires shall consist of not less than 3 courses, the lowest being not more that 230 millimetres, and the uppermost being at least 1 metre above the platform, and no intermediate opening being more than 3280 millimetres in height. Stanchions shall be at intervals of not more that 1.5 metres; or
(b) an underdeck passage connecting and providing unobstructed access between those structures and complying with the following requirements -
(i) the passage and all its fittings shall be oil and gas tight;
(ii) the passage shall be well lighted, and be fitted with efficient gas detection and ventilation systems;
(iii) it shall be situated immediately below the freeboard deck;
(iv) its distance from the shell plating shall at no point throughout its length be less than one fifth of the breadth of the ship. Alternatively two underdeck passages may be provided one to port and one to starboard each of which shall comply with the requirements of subparagraphs (i), (ii) and (iii) above;
(v) means of exit from the passage to the freeboard deck shall be -
(aa) so arranged as to be as near as practicable to the working areas to be used by the crew;
(bb) in no case be more than 90 metres apart; and
(cc) fitted with efficient means of closing which are capable of quick release and operable from either side;
(vi) openings in the freeboard deck corresponding to the means of exit referred to in subparagraph (v) above shall be protected in accordance with the requirements of paragraph 8(2)(a).
(3) In adverse weather conditions, where the crew in the course of their duties may be required to go to working areas forward of the detached bridge, or forward of the poop in cases where there is no detached bridge, access shall be by means of -
(a) a gangway complying with the requirements of subparagraph (2)(a);
(b) an underdeck passage complying with the requirements of subparagraph (2)(b); or
(c) a walkway complying with the following requirements -
(i) be not less than 1 metre in width and be situated on or as near as practicable to the centre line of the ship;
(ii) if obstructed by pipes or other fittings of a permanent nature, be provided with efficient means of passage over such obstruction;
(iii) be fitted on each side and throughout its length with guardrails or guard wires complying with the requirements in subparagraph (2)(a);
(iv) have openings in these guard rails or guard wires which give access to and from the freeboard deck to the working areas used by the crew. These openings shall be on alternate sides of the walkway and be situated not more than 90 metres apart on either side;
(v) if the length of exposed deck to be traversed by the crew exceeds 70 metres, shelters of substantial construction shall be set in way of the walkway at intervals not exceeding 45 metres, every such shelter being capable of accommodating at least one person and be so constructed as to afford weather protection on the forward, port and starboard sides.
(4) The requirements of this paragraph shall not apply in the case of unmanned barges.
Hatchway covers
19.
The covers of hatchways in exposed positions on the freeboard deck, on a forecastle deck or on the top of an expansion trunk shall be of steel, of efficient construction, and watertight when secured.
Freeing arrangements
20.
(1) All exposed parts of the freeboard deck and superstructure decks shall be fitted at their perimeter for at least half of their length with guard rails or guard wires in lieu of bulwarks or with other equally effective freeing arrangements. Such guard rails or guard wires shall comply with the requirements set out in relation to such rails or wires in paragraph 18(2)(a).
(2) The upper edge of the sheer strake shall be as low as practicable.
(3) If superstructures of the ship are connected by a trunk, the exposed parts of the freedom deck in way of the trunk shall be fitted at their perimeter throughout their length with guard rails or guard wires complying with the requirements set out in paragraph 18(2)(a).
(4) If the ship is so constructed that, notwithstanding the provision of freeing ports and arrangements, it will be particularly subjected under service conditions to the building up of quantities of water on the freeboard deck efficient breakwaters shall be fitted in suitable positions on that deck.
PART III - SPECIAL REQUIREMENTS APPLICABLE TO CERTAIN TYPE “B” SHIPS
Application
21.
The requirements of paragraphs 22 to 25 apply only to Type “B” ships assigned a reduced freeboard under the provisions of paragraph 5(3) of Schedule 4.
Gangway and access
22.
The ship shall comply with the requirements of either -
(1) paragraph 18 as if it were a Type “A” ship; or
(2) paragraph 23 and 24.
23.
(1) References in this paragraph to a poop or detached bridge apply also to a deckhouse fitted in lieu of and serving the purpose of a poop or detached bridge.
(2) Access between the poop and the detached bridge shall be by means of an efficiently constructed gangway of substantial strength fitted on or near the centre line of the ship. The gangway shall be at least 1 metre in width and shall be fitted on each side and throughout its length with guard rails or guard wires complying with the requirements as set out in paragraph 18(2)(a). If the length of the gangway exceeds 70 metres, shelters complying with the requirements set out in paragraph 18(3)(v) shall be provided in way of the gangway.
24.
(1) In adverse weather conditions, where the crew in the course of their duties may be required to go to working areas forward of the detached bridge, or forward of the poop in cases where there is no detached bridge, access shall be by -
(a) the means described in paragraph 18(3);
(b) the means described in paragraph 23(2); or
(c) equivalent means of access.
(2) Where hatchway coamings are 600 millimetres or more in height, two walkways complying with the following requirements may be provided in lieu of subparagraph (1) -
(a) the walkways shall be efficiently constructed and of satisfactory strength;
(b) the walkways shall each be at least 1 metre in width and be fitted on the freeboard deck alongside the outboard structure of the hatchway coamings, one to port and the other to starboard of the hatchways;
(c) on the side outboard of the hatchways each walkway shall be fitted with guard rails or guard wire complying with the requirements set out in paragraph 18(2)(a).
Freeing arrangements
25.
The ship shall comply with the requirements of paragraph 20(4).
PART IV - SPECIAL REQUIREMENTS APPLICABLE TO SHIPS ASSIGNED TIMBER FREEBOARDS
Application and interpretation
26.
(1) The requirements of paragraphs 27 to 29 apply only to ships assigned timber freeboards. The requirements of paragraph 30 shall apply in respect of timber deck cargo carried by a ship which is marked with timber load lines and is loaded to a depth greater than that indicated by the load line which, if timber load lines were not marked, would be appropriate in the circumstances.
(2) In this Part except where the context otherwise requires -
“deck cargo” means cargo carried in any uncovered space on the deck of a ship;
“timber deck cargo” means deck cargo consisting of timber;
“weather deck” means the uppermost complete deck exposed to weather and sea, a deck which is stepped being taken to consist for this purpose of the lowest line of the deck and the continuation of that line parallel to the upper part of the deck.
Superstructures
27.
(1) The ship shall have a forecastle of not less that the standard height of an enclosed superstructure and not less in length than 0.07(L).
(2) If the ship is less than 100 metres in length it shall be fitted aft with either -
(a) a poop of not less than standard height; or
(b) a raised quarter-deck having either a deck house or a strong steel hood, so that the total height is not less than the standard height of an enclosed superstructure.
Double bottom tanks
28.
Double bottom tanks fitted within the midship half length of the ship shall have satisfactory watertight longitudinal subdivision.
Bulwarks, guard rails and stanchions
29.
The ship shall be fitted with -
(1) permanent bulwarks at least 1 metre in height which are specially stiffened on the upper edge and supported by strong bulwark stays attached to the deck and provided with freeing ports complying with the requirements of paragraph 14(1) to (7).
(2) efficient guard rails and stanchions at least 1 metre in height, of specially strong construction, and complying with the requirements of paragraph 15(4).
Stowage
Siting, distribution and stowage of timber deck cargo
30.
(1) The cargo shall be distributed and stowed so -
(a) as to avoid excessive loading having regard to the strength of the deck and the supporting structure of the ship;
(b) as to ensure that the ship will retain adequate stability at all stages of the voyage having regard in particular to -
(i) the vertical distribution of the deck cargo;
(ii) the wind moments which can be expected on the voyage;
(iii) the losses of weight in the ship, including those due to the consumption of fuel and stores; and
(iv) possible increases of weight of the ship or deck cargo, including those due to the absorption of water and to icing;
(c) as not to impair the weathertight or watertight integrity of any part of the ship or its fittings or appliances, and to ensure the proper protection of ventilators and air pipes;
(d) that its height above the deck, or any part of the ship on which it stands will not interfere with the navigation or working of the ship;
(e) that it will not interfere with, or obstruct access to, the ship's steering arrangements, including emergency steering arrangements;
(f) that it is in accordance with paragraph 15(6).
Securing of deck cargo
(2) Deck cargo shall be so secured as to ensure, as far as practicable, that there will be no movements of that cargo relative to the ship in the worst sea and weather conditions which may normally be expected on the voyage, and lashings and all fittings used for their attachment shall be of adequate strength for that purpose.
Maximum height of timber deck cargo
(3) Timber deck cargo carried by a ship within a Winter seasonal area during the period specified as the Winter period in relation to that ship shall be so stowed that at no point throughout its length does the height of the deck cargo above the level of the weather deck at side exceed one third of the extreme breadth of the ship.
Access
(4) Where timber deck cargo occupies the whole or substantially the whole of the uncovered space on the deck of a ship, means of access for the crew between their quarters and the machinery spaces and other parts of the ship used in the working of the ship shall be provided in the form of a walkway fitted over the timber deck cargo and complying with the requirements of paragraph 15(6). In addition guard rails or life lines spaced not more than 330 millimetres apart vertically shall be provided on each side of the deck cargo to a height of at least 1 metre above the cargo.
Uprights
(5) If the nature of the timber is such that uprights are necessary in order to comply with subparagraphs (6) and (7), uprights shall be fitted which are of sufficient strength for the purpose. They shall be secured in position by angles or metal sockets of sufficient strength for the purpose or by equivalent means and shall be so spaced as to provide efficient support taking into account the nature and length of the timber, so however that the space between any two uprights fore and aft shall not exceed 3 metres.
Stowage of timber deck cargo in relation to superstructures
(6) (a) Timber deck cargo stowed in any well between superstructures shall be stowed as solidly as possible so as to extend over the entire available length of the well to a height not less than the standard height of a superstructure other than a raised quarter deck.
(b) Timber deck cargo stowed in a position having a limiting superstructure at the forward end but no such superstructure at the after end shall be stowed so as to extend over the entire available length between the superstructure and the after end of the aftermost hatchway, to the height and in the manner specified in subparagraph (a) above.
Securing of timber deck cargo
(7) (a) Timber deck cargo shall be efficiently secured throughout its length by independent overall lashings spaced not more than 3 metres apart. Eye plates for these lashings shall be efficiently attached to the sheer strake or to the deck stringer plate at intervals of not more than 3 metres. The distance from an end bulkhead of a superstructure to the first eye plate shall be not more than 2 metres. When there is no bulkhead, eye plates and lashings shall be provided at distances of 0.6 metres and 1.5 metres from the ends of the timber deck cargo.
(b) Lashings shall be of not less than 19 millimetres close link chain or of flexible wire rope of equivalent strength, fitted with sliphooks and turnbuckles so positioned as to be accessible at all times. Wire rope lashings shall have a length of long link chain sufficient to permit the length of lashings to be regulated.
(c) When timber is less than 3.6 metres in length the spacing of the lashings shall be reduced or suitable provision made to suit the length of timber.
PART V - GENERAL
Equivalence
31.
The Assigning Authority may, with the approval of the Minister -
(a) allow any fitting, material, appliance or apparatus to be fitted in a ship, or allow other provisions to be made in a ship, in the place of any fitting, material, appliance, apparatus or provision respectively which is required under any of the provisions of this Schedule if satisfied by trial or otherwise that it is at least as effective as that so required; or
(b) allow in any exceptional case departure from the requirements of any of the said provisions on condition that the freeboards to be assigned to the ship are increased to such an extent as to satisfy the Minister that the safety of the ship and protection afforded to the crew will be no less effective than would be the case if the ship fully complied with those requirements and there was no such increase of freeboards.
SCHEDULE 3
Rule 24
RECORD OF PARTICULARS
MERCHANT SHIPPING (LOAD LINE) RULES 2001
RECORD OF PARTICULARS RELATING TO CONDITIONS OF ASSIGNMENT
In this record, reference to Rules are references to the Rules set out in Annex I to the Convention of 1966, and reference to paragraphs are references to paragraphs of Schedule 2 (Conditions of Assignment) to the Merchant Shipping (Load Line) Rules, 2001.
Name of ship
Port of registry
Nationality
Distinctive number of letters
Shipbuilders
Yard Number
Date of Build/conversion
Freeboards assigned as a ship of Type
Classification
Date and place of initial survey
A plan of suitable size may be attached to this report in preference to the sketches on this page
Disposition and dimensions of superstructures, trunks, deckhouses, machinery casings; extent of bulwarks, guard rails and wood sheathing on exposed deck, to be inserted in the diagrams and tables following; together with positions of hatchways, gangways, and other means for the protection of the crew; cargo ports, bow and stern doors, side scuttles, scuppers, ventilators, air pipes, companionways, and other items that would affect the seaworthiness of the ship.
See Schedule 2 Paragraphs 7 and 8.
DOORWAYS IN SUPERSTRUCTURES, EXPOSED MACHINERY CASINGS AND DECKHOUSES PROTECTING OPENINGS IN FREEBOARD AND SUPERSTRUCTURE DECKS
LOCATION
REF NO ON SKETCH OR PLAN
NUMBER AND SIZE OF OPENINGS
HEIGHT OF SILLS
CLOSING APPLIANCES
TYPE AND MATERIAL
NUMBER OF CLIPS
In forecastle bulkhead
In bridge forward bulkhead
In bridge after bulkhead
In raised quarter deck bulkhead
In poop bulkhead
In exposed machinery casings on freeboard or raised quarter decks
In exposed machinery casings on superstructure decks
In machinery casings within superstructures or deckhouses on freeboard deck
In deckhouses in Position 1 enclosing openings leading below freeboard deck
In deckhouses in Position 2 enclosing openings leading below freeboard deck
In exposed machinery casings on freeboard or raised quarter decks
HATCHWAYS AT POSITIONS 1 AND 2 CLOSED BY PORTABLE COVERS AND SECURED WEATHERTIGHT BY TARPAULINS AND BATTENING DEVICES (Para 15).
See Schedule 2 Paragraph 5.
Position and Reference No. on Sketch or Plan
Dimensions of clear opening at top of coaming
Height of coamings above deck
PORTABLE BEAMS
Number
Spacing
bl × tf
D × tw
b2 × tf
Bearing surface
Means of securing each beam
PORTABLE COVERS
Material
Thickness
Direction fitted
Bearing surface
Spacing of cleats
TARPAULINS
No. of layers
Material
Means of securing each section of covers ............................................................ .............................
Are wood covers fitted with galvanised bands ............................................................ ......................
See Schedule 2 Paragraphs 6 and 19.
HATCHWAYS AT POSITIONS 1 AND 2 CLOSED BY WEATHERTIGHT COVERS OF STEEL (OR OTHER EQUIVALENT MATERIAL) FITTED WITH GASKETS AND CLAMPING DEVICES (Para 16)?
Position and Reference No. on Sketch or Plan
Dimensions of clear opening at top of coaming
Height of coaming above deck
Type of cover or Parent Name
Material
Position and Reference No. on Sketch or Plan
Dimensions of clear opening at top of coaming
Height of coaming above deck
Type of cover or Patent Name
Material
See Schedule 2 Paragraphs 7 and 8.
MACHINERY SPACE OPENINGS AND MISCELLANEOUS OPENINGS IN FREEBOARD AND SUPERSTRUCTURE DECKS (Paras 17 and 18)
Positions and Reference No. on Sketch or Plan
Dimensions
Height of coaming
COVER
Material
How attached
Number and spacing of Toggles
Positions and Reference No. on Sketch or Plan
Dimensions
Height of coaming
COVER
Material
How attached
Number and spacing of Toggles
Particulars of spurling pipe closing arrangements
See Schedule 2 Paragraph 9.
VENTILATORS ON FREEBOARD AND SUPERSTRUCTURE DECKS (POSITIONS 1 AND 2) (Para 19)
DECK ON WHICH FITTED
NUMBER FITTED
COAMING
TYPE (STATE PATENT NAME IF ANY)
CLOSING APPLIANCES
DIMENSIONS
HEIGHT
See Schedule 2 Paragraph 10.
AIR PIPES ON FREEBOARD AND SUPERSTRUCTURE DECKS (Para 20)
DECK ON WHICH FITTED
NUMBER FITTED
COAMING
TYPE (STATE PATENT NAME IF ANY)
CLOSING APPLIANCES
DIMENSIONS
HEIGHT
See Schedule 2 Paragraph 11.
CARGO PORTS AND OTHER SIMILAR OPENINGS (Para 11)
POSITION OF PORT
DIMENSIONS OF OPENING
DISTANCE OF LOWER EDGE FROM FREEBOARD DECK
SECURING DEVICES
REMARKS
See Schedule 2 Paragraph 12.
SCUPPERS, INLETS AND DISCHARGES (Rule 19)
STATE IF SCUPPER OR DISCHARGE
NUMBER
PIPE
FROM
VERTICAL DISTANCE ABOVE TOP OF KEEL
NUMBER, TYPE AND MATERIAL OF DISCHARGE VALVES
POSITION OF CONTROLS
DISCHARGE
UPPER MOST VALVE
DIAMETER
THICKNESS
MATERIAL
OUTLET IN HULL
INBOARD END
NOTE: In Ro-ro ships, indicate how ready accessibility to scupper valves is ensured when vehicle space is filled ..............................................
S - Scupper
MS - Mild Steel
SD - screw down
D - Discharge
CS - Cast Steel
ANR - Automatic non-return
GM - Gun
Metal SD ANR - Screw down automatic non-return
Any other approved material to be designated.
See Schedule 2 Paragraph 12.
SIDE SCUTTLES (Rule 20)
POSITION
NUMBER FITTED
CLEAR GLASS SIZE
FIXED OR OPENING
MATERIAL
TYPE OF GLASS AND THICKNESS
STANDARD USED AND TYPE NO.
FRAME
DEADLIGHT
Indicate the vertical distance between the freeboard deck and the lower still of the side scuttle positioned at the greatest vertical distance below the freeboard deck.
See Schedule 2 Paragraphs 14 and 20
FREEING PORTS (Rule 21)
LENGTH OF BULWARK
HEIGHT OF BULWARK
NUMBER AND SIZE OF FREEING PORTS EACH SIDE
TOTAL AREA EACH SIDE
REQUIRED AREA EACH SIDE
FREEBOARD DECK AFTER WELL
FORWARD WELL
SUPERSTRUCTURE DECK
State fore and aft position of each freeing port in relation
After Well
to superstructure end bulkheads
Forward Well
Particulars of shutters, bars or rails fitted to freeing ports.
Height of lower edge of freeing port above deck.
(See Schedule 2 Paragraphs 15, 18, 22, 23 and 24)
PROTECTION OF THE CREW (Rules 22 and 23)
State particulars of bulwarks or guardrails
on freeboard and superstructure decks
State details of lifelines, walkways,
gangways or underdeck passageways
where required to be fitted
(See Schedule 2 Paragraph 29)
TIMBER DECK CARGO FITTINGS
State particulars of uprights, sockets,
lashings, guardrails and lifelines;
OTHER SPECIAL FEATURES
INITIAL SURVEY
The conditions of assignment shown on this form are a record of the arrangements and fittings provided on the ship and are in accordance with the requirements of the relevant Rules set out in Annex I to the Convention of 1966 and of Schedule 2 to the Merchant Shipping (Load Line) Rules, 2001.
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(Surveyor's Signature)
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(Date)
SUBSEQUENT RENEWAL SURVEYS
I have completed the renewal survey and am satisfied that the fittings and appliances are in accordance with the particulars shown in this record and are in good condition and that approved stability information and, where applicable, information relating to loading and ballasting of the ship is on board.
Signature
Port of Survey
Date of Survey
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SCHEDULE 4
Rule 26
FREEBOARDS
Interpretation
1.
Expressions in this Schedule have the same meanings as those assigned to them in Schedule 2 and -
“block coefficient (C
b
)” means the product of-
∇
LBd
1
where -
∇ is the volume of the moulded displacement of the ship (excluding bossing) if the ship has a metal shell, and of displacement to the outer surface of the hull if the ship has a shell of any other material, displacement being taken in each case at a moulded draught of d
1
; and
d
1
is 85 per cent of the least moulded depth, provided that in no case shall the block coefficient
(C
b
) be taken to be less than 0.68.
“depth for freeboard (D)” means -
(a) except as otherwise stated in subparagraph (b) below, the moulded depth of the ship amidships plus the thickness of the freeboard deck stringer plate where fitted, plus if the exposed freeboard deck is sheathed, the product of -
T((L) - (S))
(L)
where -
T is the mean thickness of the exposed sheathing clear of deck openings;
(b) in 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, the depth calculated in accordance with subparagraph (a) above, would be the depth for freeboard purposes of a ship having a midship section with vertical topsides and with the same round of beam and the same area of topside section as that of the midship section of the actual ship;
“effective length (E)” in relation to a superstructure means the effective length of the superstructure determined in accordance with the provisions of paragraph 9(3);
“flush deck ship” means a ship which has no superstructure on the freeboard deck;
“length (S)” in relation to a superstructure means the length of the superstructure determined in accordance with the provision of paragraph 9(2);
“salt water” means water having a relative density of 1.025;
“Summer draught” means the draught measured from -
(a) in the case of a wood or composite ship, the lower edge of the keep rabbet;
(b) if the form at the lowest part of the midship section is of a hollow character, or if thick garboards are fitted, the point where the line of the flat of the bottom continued inwards cuts the side of the keel; and
(c) in any other case, the top of the keel;
to the point which, when load lines and marks have been marked on the ship's side, will correspond to the centre of the ring of the load line mark;
“Summer Timber draught” means the draught measured from point (a), (b) or (c) described in the definition of the Summer draught to the point which when Timber load lines have been marked on the ship's side will correspond to the upper edge of the Summer Timber load line;
“tabular freeboard” means in the case of a Type “A” ship the freeboard appropriate to the ship's length under Freeboard Table A set out in Schedule 5 and, in the case of a Type “B” ship, the freeboard appropriate to the ship's length under Freeboard Table B.
Freeboards: general
2.
(1) Except as otherwise provided in subparagraph (2), the freeboards, other than Timber freeboards, to be assigned to a ship shall be determined in accordance with the provisions of Part I, and Timber freeboards to be assigned to a ship shall be determined in accordance with Part II.
(2) The freeboards to be assigned to -
(a) sailing ships;
(b) tugs;
(c) ships of wood or of composite construction or of other materials;
(d) ships with constructional features such as to render freeboards determined in accordance with subparagraph (1) unreasonable or impracticable; and
(e) unmanned barges having on the freeboard deck only small access openings closed by watertight gasket covers of steel;
shall be determined in accordance with the provisions of Part III of this Schedule.
PART 1 - FREEBOARDS OTHER THAN TIMBER FREEBOARDS
Determination of freeboards
3.
(1) Subject to subparagraph (3), the Summer freeboard shall be determined in accordance with the provisions of paragraphs 4 to 16.
(2) Subject to subparagraph (3), the Tropical freeboard shall be obtained by deducting from the Summer freeboard one forty-eighth (1/48th) of the Summer draught of the ship.
(3) The freeboard so obtained in subparagraphs (1) and (2), but omitting any correction made in paragraph 8 for deck-line, shall be not less than 50 millimetres except in the case of a ship with hatchways in Position 1 to which paragraph 5 of Schedule 2 applies but which do not have pontoon covers, in which case it shall be not less than 150 millimetres.
(4) The Winter freeboard shall be obtained by adding to the Summer freeboard one forty-eighth (1/48th) of the Summer draught of the ship.
(5) The Winter North Atlantic freeboard shall be obtained by adding to the Winter freeboard a distance of 50 millimetres.
(6) (a) Subject to subparagraph (b) below, the fresh water freeboard shall be obtained by deducting from the Summer freeboard the quantity -
▴
millimetres
4T
where -
▴ is the displacement in salt water in tonnes at the Summer load waterline, and
T represents tonnes per centimetre immersion in salt water at that waterline.
(b) In any case in which the displacement at that waterline cannot be ascertained the deduction shall be one forty-eighth (1/48th) of the Summer draught of the ship.
Summer freeboard: Type “A” ships
4.
The Summer freeboard assigned to a Type “A” ship shall be determined as follows.
(1) There shall first be ascertained the ship's tabular freeboard from Table A in Schedule 5.
(2) If the block coefficient (C
b
) of the ship exceeds 0.68 the tabular freeboard shall be multiplied by the factor
(C
b
) + 0.68
1.36
(3) Corrections in accordance with paragraphs 6 to 16 shall be applied to the freeboard obtained in accordance with subparagraphs (1) and (2).
(4) Subject to paragraph 3(3), the freeboard so corrected shall be the Summer freeboard assigned to the ship.
Summer freeboard: Type “B” ships
5.
The Summer freeboard to be assigned to a Type “B” ship shall be determined as follows.
(1) There shall first be ascertained the ship's tabular freeboard from Table B in Schedule 5.
(2) (a) If the ship has hatchways in Position 1 the covers of which are either pontoon covers complying with the requirements of paragraph 5 (4) of Schedule 2 or covers which comply with paragraph 6(2) of that Schedule, the tabular freeboard may be corrected in accordance with such of the provisions of subparagraphs (3) to (7) as are applicable to the ship.
(b) If the ship has hatchways in Position 1 the covers of which comply with the requirements of paragraph 5 of Schedule 2 except those of subparagraph (4) of that paragraph, the tabular freeboard shall be corrected in accordance with the provisions of subparagraph (8).
(3) The tabular freeboard of a ship to which subparagraph (2)(a) applies and which exceeds 100 metres in length may be reduced by an amount not exceeding the maximum applicable under subparagraphs (4) and (5) if the Assigning Authority is satisfied that -
(a) the measures for the protection of the crew comply with the requirements of paragraph 15 of Schedule 2;
(b) the freeing arrangements comply with the requirements of paragraph 14 of Schedule 2;
(c) all covers of hatchways in Positions 1 and 2 comply with the requirements of paragraph 6 of Schedule 2;
(d) the ship when loaded to the Summer load waterline will remain afloat, after the flooding of any single damaged compartment other than the machinery space at an assumed permeability of 0.95, in the condition of equilibrium described in subparagraph (6). If the length of the ship exceeds 225 metres the machinery space shall rank as floodable compartment for the purposes of this requirement having for the purpose an assumed permeability of 0.85.
(4) Subject to subparagraph (5) no reduction of freeboard pursuant to subparagraph (3) shall exceed 60 per cent of the difference between the tabular freeboards under Freeboard Table A and Freeboard Table B.
(5) The reduction of 60 per cent referred to in subparagraph (4) may be increased to 100 per cent if the Assigning Authority is satisfied that -
(a) the ship complies with the requirements of paragraphs 17 and 20 of Schedule 2 as if it were a Type “A” ship and with those of paragraph 22 of that Schedule;
(b) the ship complies with the requirements of subparagraphs (3)(a) to (c); and
(c) the ship when loaded to the Summer load waterline will remain afloat in the condition of equilibrium described in subparagraph (6) after the flooding -
(i) of any two compartments adjacent fore and aft, neither of which is the machinery space, at an assumed permeability of 0.95; and
(ii) in the case of a ship exceeding 225 metres in length, of the machinery space alone, at an assumed permeability of 0.85.
(6) The condition of equilibrium referred to in subparagraphs (3) and (5) above is as follows-
(a) the final waterline after flooding is below the top of any ventilator coaming, the lower edge of any air pipe opening, the upper edge of the sill of any access opening fitted with a weathertight door, and the lower edge of any other opening through which progressive flooding may take place;
(b) 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 does not exceed 17 degrees;
(c) the metacentric height calculated using the constant displacement method has a positive value of at least 50 millimetres in the upright condition after flooding;
(d) the ship has adequate residual stability; and
(e) the ship has sufficient stability during intermediate stages of flooding to the satisfaction of the Assigning Authority;
(7) The following assumptions shall be made for the purposes of calculations pursuant to subparagraphs (3)(d) and (5)(c) -
(a) the very extent of damage is equal to the depth of the ship at the point of damage, measured from and including the freeboard deck at side to the underside of the keel;
(b) the transverse penetration of damage is not more than one fifth of the breadth of the ship (B), this distance being measured inboard from the ship's side at right angles to the centre line of the ship at the level of the Summer load waterline. The depth of transverse penetration damage assumed shall be that which results in the most severe conditions;
(c) except in the case of compartments referred to in subparagraph (5)(c)(i), no transverse bulkhead is damaged;
(d) the height of the centre of gravity above the base-line is assessed allowing for homogeneous loading of cargo holds and for 50 per cent of the designed capacity of consumable fluids and stores.
(8) The tabular freeboard of a ship to which subparagraph (2)(b) applies shall be increased by the amount shown in Table 1 appropriate to the ship's length. Freeboards, at intermediate lengths of ship shall be obtained by linear interpolation. The increase in the case of ships of more than 200 metres in length shall be by an amount which the Minister determines in each particular case.
(9) (a) This subparagraph applies to every Type “B” ship of not more than 100 metres in length having enclosed superstructures the total effective length (E) of which does not exceed 35 per cent of the ship's length (L).
(b) The freeboard calculated in respect of such a ship in accordance with subparagraphs (1),(2) and (8) shall be increased by the following amount -
(E)
7.5 (100-(L)) ( (0.35
(L)
) millimetres
(10) In the case of a ship with a block coefficient (C) exceeding 0.68, the freeboard calculated in accordance with subparagraphs (1) to (9) shall be multiplied by the factor -
(C
b
) + 0.68
1.36
(11) Corrections in accordance with paragraph 6 to 16 shall be applied to the freeboard calculated in accordance with subparagraphs (1) to (10) and, subject to paragraph 3(3), the freeboard so corrected shall be the Summer freeboard to be assigned to the ship.
TABLE 1
Length of ship (metres)
Freeboard increase (millimetres)
Length of ship (metres)
Freeboard increase (millimetres)
Length of ship (metres)
Freeboard increase millimetres
108
and below
50
139
175
170
290
109
52
140
181
171
292
110
55
141
186
172
294
111
57
142
191
173
297
112
59
143
196
174
299
113
62
144
201
175
301
114
64
145
206
176
304
115
68
146
210
177
306
116
70
147
215
178
308
117
73
148
219
179
311
118
76
149
224
180
313
119
80
150
228
181
315
120
84
151
232
182
318
121
87
152
236
183
320
122
91
153
240
184
322
123
95
154
244
185
325
124
99
155
247
186
327
125
103
156
251
187
329
126
108
157
254
188
332
127
112
158
258
189
334
128
116
159
261
190
336
129
121
160
264
191
339
130
126
161
267
192
341
131
131
162
270
193
343
132
136
163
273
194
346
133
142
164
275
195
348
134
147
165
278
196
350
135
153
166
280
197
353
136
159
167
283
198
355
137
164
168
285
199
357
138
170
169
287
200
358
Basic freeboard
6.
In the following paragraphs “basic freeboard” means the Summer freeboard calculated in accordance with paragraph 4 or 5, whichever is applicable, but omitting, in the case of a Type “A” ship, the corrections referred to in paragraph 4(3), or in the case of a Type “B” ship, the corrections referred to in paragraph 5(11).
Correction for Depth
7.
(1) If the depth for freeboard (D) exceeds
(L)
, the basic freeboard of the ship shall be
increased by -
15
(
(D) -
(L)
)
R millimetres
(
15
)
Where R is -
(L)
, in the case of a ship less than 120 metres in length; and
0.48
250 in the case of a ship of 120 metres or more in length.
(2) If (D) is less than
(L)
, the basic freeboard of the ship shall be reduced -
15
(
(D) -
(L)
)
R millimetres
(
15
)
if, but only if, the ship has, subject to subparagraph (3), either -
(a) an enclosed superstructure covering at least 0.6 (L) amidships;
(b) an efficient trunk extending for the ship's length; or
(c) a combination of enclosed superstructures connected by efficient trunks, being a combination extending for the ship's length.
(3) If the height of any such superstructure or trunk in subparagraph (2) is less than standard height the amount of reduction shall be reduced in the ratio of the actual to the standard height of the superstructure or trunk.
Correction for position of deck-line
8.
(1) Subject to the provisions of subparagraph (2), if the actual depth to the upper edge of the deck-line is greater or less than the depth for freeboard, the difference if greater shall be added to, or if less shall be deducted from, the basic freeboard of the ship.
(2) If the position of the deck-line has been fixed in accordance with the provisions of rule 16(3), the actual depth of the ship shall be taken to the point amidships where the continuation outwards of the upper surface of the freeboard deck or on any sheathing on that deck intersects the outer surface of the shell of the ship.
Standard height, length and effective length of superstructures
9.
(1) The standard height of a superstructure shall be determined in accordance with Table 2 -
TABLE 2
Length of ship
Standard Height (metres)
(L) (metres)
of a raised quarter deck
of a superstructure other than a raised quarter deck
30 or less
0.90
1.80
75
1.20
1.80
125 or more
1.80
2.30
Standard heights for intermediate lengths of the ship shall be obtained by linear interpolation
(2) (a) Subject to subparagraph (b) below, the length of a superstructure (S) shall be the mean length of the parts of the superstructure which lie within the length of the ship.
(b) In the case of an enclosed superstructure having an end bulkhead which extends in a fair convex curve beyond its intersection with the superstructure sides, the length of the superstructure (S) may be taken as its length determined in accordance with subparagraph (a), but increased by two-thirds of the fore and aft extent of the curvature to a maximum of one half the breadth of the superstructure at the point of intersection of the curved end of the superstructure with its side.
(3) (a) In the case of an enclosed superstructure of standard height, the effective length of a superstructure (E) shall be, subject to subparagraph (c) below, either -
(i) its length; or
(ii) if the superstructure is set in from the sides of the ship, its length modified in the ratio b/Bs, where -
(aa) “b” is the breadth of the superstructure at the middle of its length; and
(bb) “Bs” is the breadth of the ship at the middle of the length of the superstructure
where the superstructure is only set in for part of its length, this modification shall be applied only to that part.
(b) In the case of an enclosed superstructure of less than standard height the effective length of a superstructure, subject to subparagraphs (a) above and (c) below, shall be its length reduced in the ratio of the actual height of the superstructure to its standard height.
(c) In the case of an enclosed superstructure consisting of a raised quarter deck the effective length of a superstructure shall, if the deck is fitted with an intact front bulkhead, be its length subject to a maximum of 0.6 of the ship's length and, if not so fitted, be determined by treating the raised quarter deck as a poop of less than standard height.
(d) A superstructure which is not an enclosed superstructure as defined in paragraph 1 of Schedule 2 shall have no effective length.
Standard height and effective length of trunks
10.
(1) The standard height of a trunk shall be that applicable to a superstructure other than a raised quarter deck in paragraph 9(1).
(2) The effective length of a trunk shall be determined as follows -
(a) a trunk which is not an efficient trunk as described in subparagraph (b) below shall have no effective length;
(b) a trunk shall be treated as an efficient trunk provided -
(i) it is at least as strong as a superstructure;
(ii) the hatchways in way of the trunk are in the trunk deck, and the hatchway coamings and covers comply with the requirements of paragraphs 4 to 6 of Schedule 2, except that small access openings with watertight covers may be permitted in the freeboard deck;
(iii) the width of the trunk deck stringer provides a satisfactory gangway and sufficient lateral stiffness;
(iv) a permanent working platform fore and aft fitted with guard rails or guard wires complying with applicable requirements in paragraph 18(2)(a) of Schedule 2 is provided by the trunk deck, or by detached trunks connected to superstructures by efficient permanent gangways.
(v) ventilators are protected by the trunk, by watertight covers or by equivalent means;
(vi) open rails or wires are fitted on the weather parts of the freeboard deck in way of the trunk for at least half of their length;
(vii) the machinery casings are protected by the trunk, or by an enclosed superstructure of at east standard height, or by a deckhouse of the same height, strength and weathertightness equivalent to such an enclosed superstructure;
(vii) the breadth of the trunk is at least 60 per cent of the breadth of the ship;
(ix) where there is no superstructure the length of the trunk is at least 0.6(L).
(c) Except as otherwise provided in subparagraph (d) below, the effective length of an efficient trunk shall be its full length reduced in the ratio of its mean breadth to the breadth of the ship.
(d) If the actual height of an efficient trunk is less than the standard height, its effective length shall be the length calculated in accordance with subparagraph (c) above reduced in the ratio of the actual to the standard height of the trunk. In addition, if the ship is a Type “B” ship and the height of hatchway coamings on the trunk deck is less than that required by paragraph 5(1) or 6(1) of Schedule 2 a reduction from the actual height of the trunk shall be made of an amount corresponding to the difference between the actual height and the required height of the hatchway coamings.
Deduction for effective length of superstructures and trunks
11.
(1) Where the sum of the effective lengths of superstructures and trunks of a ship is 1.0(L), the basic freeboard of the ship shall be reduced by -
350 millimetres
if the ship is 24 metres in length (L);
860 millimetres
if the ship is 85 metres in length (L);
1070 millimetres
if the ship is 122 metres in length (L) or more;
and by amounts obtained by linear interpolation in the case of ships of intermediate length.
(2) Where the sum of the effective lengths of superstructures and trunks is less than 1.0 (L), the basic freeboard of a ship shall be reduced by a percentage of the figures in subparagraph (1) according to the total effective length of its superstructures and trunks as follows
(a) In the case of a Type “A” ship, by a percentage given in Table 3. The percentage in the case of a ship having superstructures and trunks of an effective length intermediate to those specified in Table 3 is to be obtained by linear interpolation.
(b) (i) Subject to subparagraphs (ii), (iii) and (iv) below, in the case of a Type “B” ship, by a percentage given in Table 4. The percentage in the case of a ship having superstructures and trunks of an effective length intermediate to those specified in Table 4 is to be obtained by linear interpolation.
(ii) Where the effective length of a bridge covers less than 0.1 (L) before and 0.1(L) abaft amidships the percentages shall be obtained by linear interpolation between the lines 1 and II.
(iii) Where the effective length of a forecastle is more than 0.4 (L), the percentage shall be obtained from line II.
(iv) Where the effective length of a forecastle is less than 0.07 (L), the above percentages shall be reduced by -
5.
(0.07) (L) - f)
0.07(L)
where “f” is the effective length of the forecastle.
TABLE 3
PERCENTAGE OF DEDUCTION FOR TYPE “A” SHIPS
Percentage of deduction for all types of superstructure and trunks
Total effective length of superstructure and trunks
0
0.1(L)
0.2(L)
0.3(L)
0.4(L)
0.5(L)
0.6(L)
0.7(L)
0.8(L)
0.9(L)
1.0(L)
0
7
14
21
31
41
52
63
75.3
87.7
100
TABLE 4
PERCENTAGE OF DEDUCTION FOR TYPE “B” SHIPS
Ships with forecastle and without detached bridge
Total effective length of superstructure and trunks
Line
0
0.1(L)
0.2(L)
0.3(L)
0.4(L)
0.5(L)
0.6(L)
0.7(L)
0.8(L)
0.9(L)
1.0
1
0
5
10
15
23.5
32
46
63
75.3
87.7
100
Ships with forecastle and detached bridge
11
0
6.3
12.7
19
27.5
36
46
63
75.3
87.7
100
Measurement of Sheer
12.
(1) The sheer shall be measured from the deck at side to a line of reference drawn parallel to the keel through the sheer line at amidships.
(2) In ships designed with a rake of keel, the sheer shall be measured in relation to a line of reference drawn parallel to the Summer load waterline.
(3) In flush deck ships and in ships with detached superstructures the sheer shall be measured at the freeboard deck.
(4) In ships with topsides of unusual form in which there is a step or break in the topsides, the sheer shall be considered in relation to the equivalent depth amidships.
(5) In ships with a superstructure of standard height which extends over the whole length of the freeboard deck, the sheer shall be measured at the superstructure deck. Where the height of the superstructure exceeds the standard height the least difference (Z) between the actual and standard heights shall be added to each end ordinate. Similarly, the intermediate ordinates at distances of 1/6(L) and 1/3(L) from each perpendicular shall be increased by 0.444 (Z) and 0.111 (Z) respectively.
(6) Where the deck of an enclosed superstructure has at least the same sheer as the exposed freeboard deck, the sheer of the enclosed portion of the freeboard deck shall not be taken into account.
(7) Where an enclosed poop or forecastle is either -
(a) of standard height with greater sheer than that of the freeboard deck; or
(b) is of more than standard height;
an addition to the sheer of the freeboard deck shall be made calculated in accordance with paragraph 14(4).
Standard sheer profile
13.
The ordinates of the standard sheer profile are given in Table 5 -
TABLE 5
Station
Ordinate
Factor
(in millimetres)
After Half
After perpendicular (A.P.)
25.0((L)/3+10)
1
1/6(L) from A.P.
11.1((L)/3+10)
3
1/3(L) from A.P.
2.8((L)/3+10)
3
Amidships
0
1
Forward Half
Amidships
0
1
1/3(L) from F.P.
5.6((L)/3+10)
3
1/6(L) from F.P.
22.2((L)/3+10)
3
Forward perpendicular (F.P.)
50.0((L)/3+10)
1
Measurement of variation from standard sheer profile
14.
(1) Where the sheer profile differs from the standard sheer profile, the four ordinates of each profile in the forward or after halves of the ship shall be multiplied by the appropriate factors given in paragraph 13. The difference between the sums of the respective products and those of the standard divided by 8 shall be the deficiency or excess of sheer in the forward or other half. The arithmetical mean of the excess or deficiency in the forward and after halves shall be the excess or deficiency of sheer.
(2) Where the after half of the sheer profile is greater than the standard sheer profile and the forward half is less than the standard sheer profile, no credit shall be allowed for the part in excess, and deficiency only shall be measured.
(3) Where the forward half of the sheer profile exceeds the standard sheer profile, and the after half of the sheer profile is not less than 75 per cent of the standard sheer profile, credit shall be allowed for the part in excess. Where the after half of the sheer profile is less than 50 per cent of the standard sheer profile, no credit shall be given for the excess of sheer forward. Where the sheer in the after half is between 50 per cent and 75 per cent of the standard sheer profile, intermediate allowances may be granted for excess sheer forward.
(4) Where sheer credit is given for a poop or forecastle the following formula shall be used -
y
L'
S =
3
(L)
where -
S=sheer credit, to be deducted from the deficiency or added to the excess of sheer;
Y=difference between actual and standard height of superstructure at the end ordinate of sheer; and
L'=mean enclosed length of poop or forecastle up to a maximum length of 0.5 (L).
This formula provides a curve in the form of a parabola tangential to the actual sheer curve at the freeboard deck and interacting the end of ordinate at a point below the superstructure deck at a distance equal to the standard height of the poop or forecastle. The superstructure deck shall not be less than standard height above this curve at any point. This curve shall be used in determining the sheer profile for the forward and the after halves of the ship.
Correction for Variations from standard sheer profile
15.
(1) The correction for sheer shall be the deficiency or excess of sheer determined in accordance with paragraph 14 multiplied by -
0.75 -
S
2(L)
(2) In the case of a ship with sheer less than the standard sheer profile, the correction for deficiency of sheer determined in accordance with subparagraph (1) shall be added to the basic freeboard of the ship.
(3) Subject to subparagraph (4), in the case of a ship having an excess of sheer -
(a) if an enclosed superstructure covers 0.1(L) before and 0.1(L) abaft amidships, the correction for excess of sheer determined in accordance with subparagraph (1) shall be deducted from the basic freeboard of the ship;
(b) if no enclosed superstructure covers amidships, no deductions shall be made from the basic freeboard of the ship;
(c) if an enclosed superstructure covers less than 0.1 (L) before and 0.1(L) abaft amidships, the correction for excess of sheer determined in accordance with subparagraph (1) shall be modified in the ratio of the amount of 0.2 (L) amidship which is covered by the superstructure, 0.2(L).
(4) The maximum deduction for excess sheer shall be at the rate of 125 millimetres per 100 metres of length (L).
Correction for minimum bow height
16.
(1) Except as otherwise provided in subparagraph (2) and (3), where the bow height determined in accordance with subparagraph (4) is less than the minimum bow height determined in accordance with subparagraph (5), the freeboard determined for the ship shall be increased by an amount equal to the difference between the bow height and the minimum bow height.
(2) Where an existing ship to which subparagraph (1) applies has been so constructed or modified as to comply with all the requirements of Schedule 2 applicable to a new ship of her type is to be assigned freeboards determined in accordance with this Schedule, and/or -
(a) the forecastle is less than 0.07(L);
(b) the sheer extends for less than 15 per cent of the ship's length (L) measured from the forward perpendicular.
The freeboard shall be increased by such amount as the Assigning Authority may determine in each particular case.
(3) In the case of a ship to which subparagraph (1) applies, being a ship which is constructed to meet exceptional operational requirements, the correction to be made in accordance with subparagraphs (1) and (2) may be reduced or waived if the Minister is satisfied that the safety of the ship will not be impaired in consequence of the worst sea and weather conditions likely to be encountered by the ship in service.
(4) The bow height of the a ship is the vertical distance at the forward perpendicular between the Summer load waterline at the designed trim and the top of the exposed deck at side.
(a) Where the bow height is obtained by including sheer, the sheer shall extend for no less than 15 per cent of length (L) measured from the forward perpendicular.
(b) Where the bow height is obtained by including the height of a superstructure, such superstructure shall -
(i) extend from the stem to a point not less than 0.07 of the ship's length (L) measured from the forward perpendicular
(ii) if length (L) is 100 metres or less, be an enclosed superstructure; and
(iii) if length (L) exceeds 100 metres in length, be fitted with satisfactory closing appliances.
(5) The minimum bow height in millimetres shall be -
56(L)
(1 -
(L)
)
(
1.36
)
(
500
)
(
C
b
+ 0.68
)
Where (L) is less than 250 metres, and
7000
( 1.36 )
( C
b
+ 0.68 )
where (L) is 250 metres or more;
C
b
shall not be taken as less than 0.68.
PART II - TIMBER FREEBOARDS
Summer Timber freeboard
17.
The Summer Timber freeboard is the freeboard determined in accordance with the provisions of paragraphs 5(1), (2)(a), (9) and (10) and corrected in accordance with the provisions of paragraph 6 to 15, except that the percentage in Table 6 shall be substituted for those given in Table 4 of paragraph 11(2).
TABLE 6
PERCENTAGE OF DEDUCTION FOR TYPE “B” SHIPS
Percentage of deduction for all types of superstructure
Total effective length of superstructure
0
0.1(L)
0.2(L)
0.3(L)
0.4(L)
0.5(L)
0.6(L)
0.7(L)
0.8(L)
0.9(L)
1.0(L)
20
31
42
53
64
70
76
82
88
94
100
Percentages at intermediate lengths superstructures shall be obtained by linear interpolation.
Other Timber freeboards
18.
(1) The Winter Timber freeboard shall be obtained by adding to the Summer Timber freeboard one thirty-sixth (1/36th) of the Summer Timber draught.
(2) The Winter North Atlantic Timber freeboard shall be the same as the Winter North Atlantic freeboard assigned.
(3) The Tropical Timber freeboard shall be obtained by deducting from the Summer Timber freeboard one forty-eighth (1/48th) of the Summer Timber draught.
(4) (a) The Fresh Water Timber freeboard shall, subject to subparagraph (b), be obtained by deducting from the Summer Timber freeboard the quantity -
▴
millimetres
4T
where -
▴is the displacement in salt water in tonnes at the waterline which will when load lines have been marked on the ship's side correspond to the Summer Timber load line; and
T represents tonnes per centimetre immersion in salt water at that waterline.
(b) Where the displacement at that waterline cannot be ascertained the deduction shall be one forty-eighth (1/48th) of the Summer Timber draught of the ship.
PART III - SAILING SHIPS AND OTHER SHIPS
Sailing ships and tugs
19.
The freeboards to be assigned to sailing ships and tugs shall be freeboards determined in accordance with the provisions of Part I of this Schedule increased by such amount as the Minister may direct in each particular case.
Ships of wood and other ships
20.
The freeboards to be assigned to ships of wood or of composite construction or of other materials, or to ships with constructional features such as to render freeboards calculated in accordance with Part I of this Schedule unreasonable or impracticable shall be determined by the Assigning Authority in each particular case.
Unmanned barges
21.
The freeboards to be assigned to unmanned barges having on the freeboard deck only small access openings closed by watertight gasketed covers of steel shall be freeboards determined in accordance with the provisions of Part I of this Schedule omitting paragraphs 5 and 16. Such freeboards may be reduced by such amounts not exceeding 25 per cent as the Minister may direct in each particular case.
SCHEDULE 5
FREEBOARD TABLES
1.
The following is the Freeboard Table referred to in paragraph 4 of Schedule 4:-
TABLE A
FREEBOARD TABLE TYPES “A” SHIPS
Length of ship
Freeboard
Length of ship
Freeboard
Length of ship
Freeboard
(metres)
(millimetres)
(metres)
(millimetres)
(metres)
(millimetres)
24
200
64
626
104
1196
25
208
65
639
105
1212
26
217
66
653
106
1228
27
225
67
666
107
1244
28
233
68
680
108
1260
29
242
69
693
109
1276
30
250
70
706
110
1293
31
258
71
720
111
1309
32
267
72
733
112
1326
33
275
73
746
113
1342
34
283
74
760
114
1359
35
292
75
773
115
1376
36
300
76
786
116
1392
37
308
77
800
117
1409
38
316
78
814
118
1426
39
325
79
828
119
1442
40
334
80
841
120
1459
41
344
81
855
121
1476
42
354
82
869
122
1494
43
364
83
883
123
1511
44
374
84
897
124
1528
45
385
85
911
125
1546
46
396
86
926
126
1563
47
408
87
940
127
1580
48
420
88
955
128
1598
49
432
89
969
129
1615
50
443
90
984
130
1632
51
455
91
999
131
1650
52
467
92
1014
132
1667
53
478
93
1029
133
1684
54
490
94
1044
134
1702
55
503
95
1059
135
1719
56
516
96
1074
136
1736
57
530
97
1089
137
1753
58
544
98
1105
138
1770
59
559
99
1120
139
1787
60
573
100
1135
140
1803
61
587
101
1151
141
1820
62
600
102
1166
142
1837
63
613
103
1181
143
1853
144
1870
197
2582
250
3012
145
1886
198
2592
251
3018
146
1903
199
2602
252
3024
147
1919
200
2612
253
3030
148
1935
201
2622
254
3036
149
1952
202
2632
255
3042
150
1968
203
2641
256
3048
151
1984
204
2650
257
3054
152
2000
205
2659
258
3060
153
2016
206
2669
259
3066
154
2032
207
2678
260
3072
155
2048
208
2687
261
3078
156
2064
209
2696
262
3084
157
2080
210
2705
263
3089
158
2096
211
2714
264
3095
159
2111
212
2723
265
3101
160
2126
213
2732
266
3106
161
2141
214
2741
267
3112
162
2155
215
2749
268
3117
163
2169
216
2758
269
3123
164
2184
217
2767
270
3128
165
2198
218
2775
271
3133
166
2212
219
2784
272
3138
167
2226
220
2792
273
3143
168
2240
221
2801
274
3148
169
2254
222
2809
275
3153
170
2268
223
2817
276
3158
171
2281
224
2825
277
3163
172
2294
225
2833
278
3167
173
2307
226
2841
279
3172
174
2320
227
2849
280
3176
175
2332
228
2857
281
3181
176
2345
229
2865
282
3185
177
2357
230
2872
183
3189
178
2369
231
2880
284
3194
179
2381
232
2888
285
3198
180
2393
233
2895
286
3202
181
2405
234
2903
287
3207
182
2416
235
2910
288
3211
183
2428
236
2918
289
3215
184
2440
237
2925
290
3220
185
2451
238
2932
291
3224
186
2463
239
2939
292
3228
187
2474
240
2946
293
3233
188
2486
241
2953
294
3237
189
2497
242
2959
295
3241
190
2508
243
2966
296
3246
191
2519
244
2973
297
3250
192
2530
245
2979
298
3254
193
2541
246
2986
299
3258
194
2552
247
2993
300
3262
195
2562
248
3000
301
3266
196
2572
249
3006
302
3270
303
3274
324
3342
345
3394
304
3278
325
3345
346
3396
305
3281
326
3347
347
3399
306
3285
327
3350
348
3401
307
3288
328
3353
349
3403
308
3292
329
3355
350
3406
309
3295
330
3358
351
3408
310
3298
331
3361
352
3410
311
3302
332
3363
353
3412
312
3305
333
3366
354
3414
313
3308
334
3368
355
3416
314
3312
335
3371
356
3418
315
3315
336
3373
357
3420
316
3318
337
3375
358
3422
317
3322
338
3378
359
3423
318
3325
339
3380
360
3425
319
3328
340
3382
361
3427
320
3331
341
3385
362
3428
321
3334
342
3387
363
3430
322
3337
343
3389
364
3432
323
3339
344
3392
365
3433
Freeboards at intermediate lengths of ship shall be obtained by linear interpolation.
Freeboards, in mm, at length of ship less than 24 metres shall be -
50 +
[
150 (L)
]
[
24
]
See also paragraph 3 of Schedule 4.
2.
The following is the Freeboard Table B referred to in paragraph 5 of Schedule 4:-
TABLE B
FREEBOARD TABLE TYPES “B” SHIPS
Length of ship
Freeboard
Length of ship
Freeboard
Length of ship
Freeboard
(metres)
(millimetres)
(metres)
(millimetres)
(metres)
(millimetres)
24
200
72
754
120
1690
25
208
73
769
121
1709
26
217
74
784
122
1729
27
225
75
800
123
1750
28
233
76
816
124
1771
29
242
77
833
125
1793
30
250
78
850
126
1815
31
258
79
868
127
1837
32
267
80
887
128
1859
33
275
81
905
129
1880
34
283
82
923
130
1901
35
292
83
942
131
1921
36
300
84
960
132
1940
37
308
85
978
133
1959
38
316
86
996
134
1979
39
325
87
1015
135
2000
40
334
88
1034
136
2021
41
344
89
1054
137
2043
42
354
90
1075
138
2065
43
364
91
1096
139
2087
44
374
92
1116
140
2109
45
385
93
1135
141
2130
46
396
94
1154
142
2131
47
408
95
1172
143
2171
48
420
96
1190
144
2190
49
432
97
1209
145
2209
50
443
98
1229
146
2229
51
455
99
1250
147
2250
52
467
100
1271
148
2271
53
478
101
1293
149
2293
54
490
102
1315
150
2315
55
503
103
1337
151
2334
56
516
104
1359
152
2354
57
530
105
1380
153
2375
58
544
106
1401
154
2396
59
559
107
1421
155
2418
60
573
108
1440
156
2440
61
587
109
1459
157
2460
62
601
110
1479
158
2480
63
615
111
1500
159
2500
64
629
112
1521
160
2520
65
644
113
1543
161
2540
66
659
114
1565
162
2560
67
674
115
1587
163
2580
68
689
116
1609
164
2600
69
705
117
1630
165
2620
70
721
118
1651
166
2640
71
738
119
1671
167
2660
168
2680
221
3601
274
4327
169
2698
222
3615
275
4339
170
2716
223
3630
276
4350
171
2735
224
3645
277
4362
172
2754
225
3660
278
4373
173
2774
226
3675
279
4385
174
2795
227
3690
280
4397
175
2815
228
3705
281
4408
176
2835
229
3720
282
4420
177
2855
230
3735
283
4432
178
2875
231
3750
284
4443
179
2895
232
3765
285
4455
180
2915
233
3780
286
4467
181
2933
234
3795
287
4478
182
2952
235
3808
288
4490
183
2970
236
3821
289
4502
184
2988
237
3835
290
4513
185
3007
238
3849
291
4525
186
3025
239
3864
292
4537
187
3044
240
3880
293
4548
188
3062
241
3893
294
4560
189
3080
242
3906
295
4572
190
3098
243
3920
296
4583
191
3116
244
3934
297
4595
192
3134
245
3949
298
4607
193
3151
246
3965
299
4618
194
3167
247
3978
300
4630
195
3185
248
3992
301
4642
196
3202
249
4005
302
4654
197
3219
250
4018
303
4665
198
3235
251
4032
304
4676
199
3249
252
4045
305
4686
200
3264
253
4058
306
4695
201
3280
254
4072
307
4704
202
3296
255
4085
308
4714
203
3313
256
4098
309
4725
204
3330
257
4112
310
4736
205
3347
258
4125
311
4748
206
3363
259
4139
312
4757
207
3380
260
4152
313
4768
208
3397
261
4165
314
4779
209
3413
262
4177
315
4790
210
3430
263
4189
316
4801
211
3445
264
4201
317
4812
212
3460
265
4214
318
4823
213
3475
266
4227
319
4834
214
3490
267
4240
320
4844
215
3505
268
4252
321
4855
216
3520
269
4264
322
4866
217
3537
270
4276
323
4878
218
3554
271
4289
324
4890
219
3570
272
4302
325
4899
220
3586
273
4315
326
4909
327
4920
340
5055
353
5190
328
4931
341
5065
354
5200
329
4943
342
5075
355
5210
330
4955
343
5086
356
5220
331
4965
344
5087
357
5230
332
4975
345
5108
358
5240
333
4985
346
5119
359
5250
334
4995
347
5130
360
5260
335
5005
348
5140
361
5268
336
5015
349
5150
362
5276
337
5025
350
5160
363
5285
338
5035
351
5170
364
5294
339
5045
352
5180
365
5303
Freeboards at intermediate lengths of ship shall be obtained by linear interpolation.
Freeboards, in mm, at length of ship less than 24 metres shall be -
50 +
[
150 (L)
]
[
24
]
See also paragraph 3 and 17 of Schedule 4.
SCHEDULE 6
Rule 29
STABILITY
PART I - INFORMATION AS TO STABILITY
The information relating to the stability of a ship to be provided for the master shall include the particulars specified below.
1.
The ship's name, official number, port of registry, gross and register tonnages, principal dimensions, displacement, deadweight and draught to the Summer Load Line.
2.
A profile view and, if necessary, plan views of the ship drawn to scale showing all compartments, tanks, storerooms and crew and passenger accommodation spaces, with their position relative to mid ship.
3.
(1) The capacity and the longitudinal and vertical centre of gravity of every compartment available for the carriage of cargo, fuel, stores, feedwater, domestic water or water ballast.
(2) In the case of vehicle ferry, the vertical centre of gravity of compartments designated for the carriage of vehicles shall be based on the estimated centres of gravity of the vehicles and not on the volumetric centres of the compartments.
4.
(1) The estimated total weight and the longitudinal and vertical centre of gravity of each such total weight of -
(a) the passengers and their effects; and
(b) the crew and their effects.
(2) In estimating such centres of gravity, passengers and crew shall be assumed to be distributed about the ship in the spaces they will normally occupy, including the highest decks to which either or both have access.
5.
(1) The estimated weight and the disposition and centre of gravity of the maximum amount of deck cargo which the ship may reasonably be expected to carry on an exposed deck.
(2) In the case of deck cargo, the arrival condition shall include the weight of water likely to be absorbed by the cargo. (For timber deck cargo the weight of water absorbed shall be taken as 15 per cent of the weight when loaded.)
6.
A diagram or scale showing -
(a) the load line mark and load lines with particulars of the corresponding freeboards; and
(b) the displacement, tonnes per centimetre immersion, and deadweight corresponding to a range of mean draughts extending between the waterline representing the deepest load line and the waterline of the ship in light condition.
7.
(1) A diagram or tabular statement showing the hydrostatic particulars of the ship, including the heights of the transverse metacentre and the values of the moment to change trim one centimetre. These particulars shall be provided for a range of mean draughts extending at least between the waterline representing the deepest load line and the waterline of the ship in light condition.
(2) Where a tabular statement is used to comply with subparagraph (1), the intervals between such draughts shall be sufficiently close to permit accurate interpolation.
(3) In the case of ships having raked keels, the same datum for the heights of centres of buoyancy and metacentres shall be used as for the centres of gravity referred to in paragraphs 3, 4 and 5.
8.
The effect on stability of free surface in each tank in the ship in which liquids may be carried, including an example to show how the metacentric height is to be corrected.
9.
(1) A diagram or table showing cross curves of stability, covering the range of draughts referred to in paragraph 7(1).
(2) The information shall indicate the height of the assumed axis from which the righting levers are measured and the trim which has been assumed.
(3) In the case of ships having raked keels, or where a datum other than the top of keel has been used, the position of the assumed axis shall be clearly defined.
(4) Subject to subparagraph (5), only enclosed superstructures and efficient trunks as defined in paragraph 10 of Schedule 4 shall be taken into account in deriving such curves.
(5) The following structures may be taken into account in deriving such curves if the Minister is satisfied that their location, integrity and means of closure will contribute to the ship's stability -
(a) superstructures located above the superstructure deck;
(b) deckhouses on or above the freeboard deck whether wholly or in part only;
(c) hatchway structures on or above the freeboard deck.
(6) Subject to the approval of the Minister in the case of a ship carrying timber deck cargo, the volume of the timber deck cargo, or a part thereof, may be taken into account in deriving a supplementary curve of stability appropriate to the ship when carrying such cargo.
(7) An example shall be included to show how a curve of righting levers (GZ) may be obtained from the cross curves of stability.
(8) In the case of a vehicle ferry or a similar ship having bow doors, ship-side doors or stern doors where the buoyancy of a superstructure is taken into account in the calculation of stability information, and the cross curves of stability are based upon the assumption that such doors are secured weathertight, there shall be a specific warning that such doors must be secured weathertight before the ship proceeds to sea.
10.
(1) The diagram and statements referred to in subparagraph (2) shall be provided separately for each of the following conditions of the ship -
(a)
light condition.
If the ship has permanent ballast, such diagram and statements shall be provided for the ship in light condition both with and without such ballast;
(b)
ballast condition both on departure and on arrival.
It is to be assumed that on arrival oil fuel, fresh water, consumable stores and the like are reduced to 10 per cent of their capacity;
(c)
condition on departure and on arrival when loaded to the Summer load line with cargo filling all spaces available for cargo.
Cargo shall be taken to be homogeneous except where this is clearly inappropriate, for example, in cargo spaces which are intended to be used exclusively for the carriage of vehicles or of containers;
(d)
service loaded conditions both on departure and on arrival.
(2) (a) A profile diagram of the ship drawn to a suitable small scale showing the disposition of all components of the deadweight
(b) A statement showing the lightweight, the disposition and the total weights of all components of the deadweight, the displacement, the corresponding positions of the centres of gravity, the metacentre and also the metacentre height (GM).
(c) A diagram showing the curve of righting levers (GZ). Where credit is given for the buoyancy of a timber deck cargo the curve of righting levers (GZ) must be drawn both with and without this credit.
(d) A statement showing the elements of stability in the condition compared to the criteria laid down in Schedule 2 paragraph 2(2).
(3) The metacentric height (GM) and the curve of righting levers (GZ) shall be corrected for liquid free surface.
(4) Where there is a significant amount of trim in any of the conditions referred to in subparagraph (1) the metacentric height and the curve of righting levers (GZ) may be required to be determined from the trimmed waterline.
(5) If in the view of the Assigning Authority the stability characteristics in either or both of the conditions referred to in subparagraph (1)(c) are not satisfactory, such conditions shall be marked accordingly and an appropriate warning to the master shall be inserted.
11.
A statement of instructions on appropriate procedures to maintain adequate stability in each case where special procedures are applied such as partial or complete filling of spaces designated for cargo, fuel, fresh water or other purposes.
12.
The report on the inclining test and of the calculation derived from it to obtain information of the light condition of the ship.
PART II - INFORMATION IN RELATION TO WHICH THE MINISTER'S OR ASSIGNING AUTHORITY'S APPROVAL OF THE STABILITY INFORMATION IS REQUIRED
13.
The ships referred to in rule 29(3), 4(a) and 5(a) of the Rules are as follows
(a) an oil tanker over 100 metres in length;
(b) a bulk carrier, or an ore carrier, over 150 metres in length;
(c) a single deck bulk carrier over 100 metres in length;
(d) a single deck dry cargo ship over 100 metres in length;
(e) a purpose built container ship over 125 metres in length.
SCHEDULE 7
Rule 13
NOTICE OF LOAD LINE TO BE POSTED UP BEFORE SAILING
1.
In this Schedule -
“freeboard” means the distance measured vertically downwards amid ships from the upper edge of the deck-line marked on the side of the ship to the surface of the water;
“mean freeboard” means the mean of the freeboards on each side of the ship;
“mean draught” means the mean of the draughts shown on the scales of measurement on the stem and on the stem post of the ship;
Notice to be posted up on board ship
2.
Before a ship leaves any dock, wharf or harbour or other place for the purpose of proceeding to sea, a notice is to be posted up in some conspicuous place on board ship in the form and containing the particulars in this Notice.
3.
Paragraph 2 does not apply to ships employed on a near-coastal voyage.
Availability of Standard Form
4.
Copies of the “Draught of Water and Freeboard” Notice, an example of which is attached, are available from the Department of the Marine and Natural Resources.
DRAUGHT OF WATER AND FREEBOARD
NOTICE
SHIP ......................................... PORT OF REGISTRY ............................. GROSS TONNAGE ............................
(1) Summer freeboard ......................................... millimetres corresponding to a mean draught of ................. millimetres
(2) Winter freeboard ........................................... millimetres corresponding to a mean draught of ................. millimetres
(3) Tropical freeboard ......................................... millimetres corresponding to a mean draught of ................. millimetres
(4) Winter North Atlantic freeboard ..................... millimetres corresponding to a mean draught of ................. millimetres
(5) Allowance for fresh water for all freeboards other than Timber freeboards .................................................. millimetres
(6) Timber Summer freeboard ............................. millimetres corresponding to a mean draught of ................. millimetres
(7) Timber Winter freeboard ............................... millimetres corresponding to a mean draught of ................. millimetres
(8) Timber Tropical freeboard ............................. millimetres corresponding to a mean draught of ................. millimetres
(9) Timber Winter North Atlantic freeboard ......... millimetres corresponding to a mean draught of ................. millimetres
(10) Allowance for fresh water for Timber freeboards ............................................................ ......................... millimetres
Notes
1.
The particulars to be given above of freeboards and allowances for fresh water to be taken from the load line certificate currently in force in respect of the ship.
2.
All freeboards given on the load line certificate must be stated.
3.
The mean draught to be given above is the mean of the draughts which would be shown on the scales of measurement on the stem and on the stem post of the ship if it were so loaded that the upper edge of the load line on each side of the ship appropriate to the particular freeboard were on the surface of the water.
4.
Where the draught is shown on the scales of measurement on the stem and on the stem post of the ship in feet the mean draught must be given in millimetres.
PARTICULARS OF LOADING
1
2
3
4
5
6
7
8
9
ACTUAL DRAUGHT
MEAN FREEBOARD
SIGNATURE OF MASTER AND AN OFFICER
DATE
PLACE
FORWARD
AFT
MEAN
ACTUAL
(See notes 1 & 2)
CORRECTED
(See note 3)
MASTER
AN OFFICER
Notes
1.
The actual mean freeboard (Column 6) is the mean of the freeboards on each side of the ship at the time when the ship is loaded and ready to leave.
2.
If the actual mean freeboard is less than the appropriate minimum saltwater freeboard as shown on the load line certificate these must be entered in Column 7 the corrected freeboard arrived at after making any allowances for density of water, rubbish to be discharged overboard and fuel, water and stores to be consumed on any stretch of river or inland water, being allowances duly entered in the ship's official log-book.
3.
If the actual mean freeboard is greater than the appropriate salt water freeboard, Column 7 need not be filled in.
SCHEDULE 8
Rules 7, 10 and 11
IRISH LOAD LINE CERTIFICATES
Interpretation
1.
In this Schedule -
“appropriate certificate” means -
(a) in the case of a Convention-size ship, an International Load Line Certificate (1966), and
(b) in the case of any other ship, an Irish Load Line Certificate.
Appropriate Certificates
2.
(1) Subject to the provisions of rule 10, the Assigning Authority shall issue the appropriate certificate in respect of an Irish ship which has been surveyed and marked in accordance with these Rules.
(2) If the certificate is an International Load Line Certificate (1966) it shall be in the form prescribed by the 1966 Convention.
(3) If the certificate is an Irish Load Line Certificate it shall be in the form indicated below.
(4) Subject to any exemption conferred by or under the Principal Act or, these Rules, a ship shall not proceed, or attempt to proceed, to sea unless the appropriate certificate is in force in respect of that ship.
Exemption Certificates
3.
(1) Where a ship is exempted under subsections (2) or (4) of Section 20 of the Principal Act an “International Load Line Exemption Certificate” in the form prescribed by Annex III of the 1988 Protocol shall be issued in respect of the ship by the Minister; and
(2) Where a ship is exempted under subsections (3) of such section an “Irish Load Line Exemption Certificate” in the form indicated below shall be issued in respect of the ship by the Minister which shall state the conditions with which the ship is to comply.
(3) Exempt in so far as the nature or terms of any such exemption require the contrary
(a) the ship shall be assigned freeboards in accordance with rule 5
(b) shall be subject to surveys in accordance with rule 6; and
(c) rules 7 to 9 shall apply in relation to the certificate of exemption as they apply in relation to load line certificates,
subject to the substitution, for references in the said Rules to an Assigning Authority, of references to the Minister.
Non-Irish Ships
4.
(1) The Minister may, at the request of a Government of a Convention country, survey a ship registered in that country and if satisfied that the requirements of the 1966 Convention are complied with and that a survey has been satisfactorily completed in accordance with these Rules, issue to the ship an International Load Line Certificate (1966) and, where appropriate, endorse such certificates in accordance with the requirements of the 1966 Convention. A certificate issued in accordance with such a request shall contain a statement that it has been so issued and shall have the same effect as if it was issued by that Government and not by the Minister.
(2) An Irish Load Line Certificate may be issued to a non-Irish ship which has been surveyed and marked in accordance with these Rules.
(3) Subject to paragraph (4), a certificate issued under paragraph (2) shall be subject to the same conditions and have the same effect as a similar certificate issued to an Irish ship.
(4) Any certificate issued under paragraph (2) in respect of a ship registered in a Convention country shall be valid only so long as the ship is not plying on international voyages, and shall be cancelled by the Minister if he has reason to believe that the ship is plying on international voyages.
________________________________________________________________________________________________________________________
IRISH LOAD LINE CERTIFICATE
________________________________________________________________________________________________________________________
Issued under the provisions of the Merchant Shipping (Load Line) Rules 2001 under the authority of the Government of Ireland by [Full official designation of the Assigning Authority]
PARTICULARS OF SHIP
________________________________________________________________________________________________________________________
Name of Ship
________________________________________________________________________________________________________________________
Distinctive Number or Letters
________________________________________________________________________________________________________________________
Length(L) as defined by rule 2 of the Merchant Shipping (Load Line) Rules 2001
Gross Tonnage
____________________________________________________________
Freeboard assigned as
Type of ship
________________________________________________________________________________________________________________________
Freeboard from deck line
Load line
Tropical
______________________
mm. (T)
______________________
mm. above (S)
Summer
______________________
mm. (S)
Upper edge of line through centre of ring
Winter
______________________
mm. (W)
______________________
mm. below (S)
Winter North Atlantic
______________________
mm. (WNA)
______________________
mm. below (S)
Note: Freeboards and Load Lines which are not applicable need not be entered on the certificate.
Allowance for Fresh Water for all freeboards: ___________________mm.
The upper edge of deck line from which these freeboards are measured is
Date of initial or periodical survey
___________________________________________________________________________
THIS IS TO CERTIFY
That this ship has been surveyed and the freeboards and load lines shown above have been assigned in accordance with the Merchant Shipping (Load Line) Rules, 2001.
This certificate is valid until _______________________________________ subject to annual surveys in accordance with those Rules.
Issued at
____________________________________________________
on
__________________________________________________
Signed
____________________________________________________
Signature of authorised official issuing the certificate
Name
____________________________________________________
_________________________________________________________________________
Name of Ship
CONDITIONS
THIS IS TO CERTIFY
that at an annual survey required by the Merchant Shipping (Load Line) Rules, 2001, this ship was found to comply with the relevant provisions of those Rules.
Place
___________________________________________________
Date
________________________________________________________
________________________________________________________
Name
_______________________________________________________
Signature, Department of the Marine and Natural Resources
Place
___________________________________________________
Date
________________________________________________________
________________________________________________________
Name
_______________________________________________________
Signature, Department of the Marine and Natural Resources
Place
___________________________________________________
Date
________________________________________________________
________________________________________________________
Name
_______________________________________________________
Signature, Department of the Marine and Natural Resources
Place
___________________________________________________
Date
________________________________________________________
________________________________________________________
Name
_______________________________________________________
Signature, Department of the Marine and Natural Resources
Survey of this ship having been satisfactorily completed in accordance with the provisions of the Merchant Shipping (Load Line) Rules, 2001 this Certificate is extended until
_________________________
Place
___________________________________________________
Date
________________________________________________________
________________________________________________________
Name
_______________________________________________________
Signature of authorised official conducting the survey
Notes
1.
When a ship departs from a port situated on a river or inland water, deeper loading shall be permitted corresponding to the weight of fuel and all other materials required for consumption between the point of departure and the sea.
2.
When a ship is in fresh water of unit density, the appropriate load line may be submerged by the amount of the fresh water allowances shown above. Where the density is other than unity, an allowance shall be made proportional to the difference between 1.025 and the actual density.
3.
This certificate must be kept framed and posted up in some conspicuous place on board the ship, so long as it remains in force and the ship is in use.
________________________________________________________________________________________________________________________
IRISH LOAD LINE EXEMPTION CERTIFICATE
________________________________________________________________________________________________________________________
Issued under the provisions of the Merchant Shipping (Load Line) Rules 2001 under the authority of the Government of Ireland by [Full official designation of the Assigning Authority]
PARTICULARS OF SHIP
________________________________________________________________________________________________________________________
Name of Ship
________________________________________________________________________________________________________________________
Distinctive Number or Letters
________________________________________________________________________________________________________________________
THIS IS TO CERTIFY
That the above-mentioned ship is exempted pursuant to Section 20(3) of the Merchant Shipping (Load Line) Act, 1968 from the following provisions of that Act:-
Subject to the following provisions:-
Date of initial or renewal survey
____________________________________________________
This certificate is valid until ______________________________ subject, where appropriate, to annual surveys in accordance with the Merchant Shipping (Load Line) Rules, 2001.
Issued at
________________________________________________
on
___________________________________________________
Signed
__________________________________________________
Name
__________________________________________________
The Department of the Marine and Natural Resources
________________________________________________________________________________________________________________________
Name of Ship
CONDITIONS
(Continued)
THIS IS TO CERTIFY
That this ship continues to comply with the conditions under which the exemption was granted.
Place
___________________________________________________
Date
________________________________________________________
________________________________________________________
Name
_______________________________________________________
Signature, Department of the Marine and Natural Resources
Place
___________________________________________________
Date
________________________________________________________
________________________________________________________
Name
_______________________________________________________
Signature, Department of the Marine and Natural Resources
Place
___________________________________________________
Date
________________________________________________________
________________________________________________________
Name
_______________________________________________________
Signature, Department of the Marine and Natural Resources
Place
___________________________________________________
Date
________________________________________________________
________________________________________________________
Name
_______________________________________________________
Signature, Department of the Marine and Natural Resources
GIVEN under my Official Seal,
this 13 September day of September, 2001
Frank Fahey
Minister for the Marine and Natural Resources
EXPLANATORY NOTE
(This note is not part of the Rules)
15. Mediterranean
This sea is included in the Summer Zones.
However, for ships of 100 metres or less in length, the area bounded
on the north and west by the coasts of France and Spain and the meridian of longitude 3°E from the coast of Spain to latitude 40°N;
on the south by the parallel of latitude 40°N from longitude 3°E to the west coast of Sardinia; on the east by the west and north coasts of Sardinia from latitude 40°N to latitude 9°E to the south coast of Corsica, hence by the west and north coasts of Corsica to longitude 9°E and thence by the rhumb line to Cape Sicié is a Winter Seasonal Area.
Seasonal periods
WINTER
16th December to 15th March.
SUMMER
16th March to 15th December.
16. Sea of Japan
This sea south of latitude 50°N is included in the Summer Zones.
However, for ships of 100 metres or less in length, the area between the parallel of latitude 50°N and the rhumb line from the east coast of Korea at latitude 38°N to the west coast of Hokkaido, Japan, at latitude 43°12'N is a Winter Seasonal Area.
Seasonal periods
WINTER
1st December to 28th/29th February.
SUMMER
1st March to 30th November.
SCHEDULE 2
Rule 22
CONDITIONS OF ASSIGNMENT
Interpretation
1.
In this Schedule, except where the context otherwise requires
“breadth (B)” means the maximum breadth of the ship measured amidships to the moulded line of the frame in the case of a ship having a metal shell, or to the outer surface of the hull in the case of a ship having a shell of any other material;
“enclosed superstructure” means a superstructure -
(a) which has enclosing bulkheads of efficient construction in which all access openings are fitted with sills and weathertight doors; and
(b) in which all other openings in sides or ends are fitted with efficient weathertight means of closing;
but shall not include a bridge or poop fulfilling these requirements unless access to machinery and other working spaces within the bridge or poop is provided by alternative means which are available at all times when access openings in the bulkheads of the bridge or poop are closed;
“exposed position” means a position which is either -
(a) exposed to weather and sea; or
(b) within a structure so exposed other than an enclosed superstructure;
“forward perpendicular” means the perpendicular taken at the forward end of the ship's length (L), coinciding with the foreside of the stem on the waterline on which such length is measured; and “after perpendicular” means the perpendicular taken at the after end of such length;
“freeing port area (A)” means the sum of the areas of the openings of freeing ports on each side of the ship for each well;
“height” in relation to a superstructure means the least vertical height measured at side from the top of the superstructure deck beams to the top of the freeboard deck beams; and the “standard height” of a superstructure means the height ascertained in accordance with the provisions of paragraph 9 of Schedule 4;
“Moulded depth” and “(D)” mean the vertical distance measured from the top of the keel to the top of the freeboard deck beam at side, except that -
(a) in the case of a wood or composite ship, it shall be measured from the lower edge of the keel rabbet;
(b) if the form at the lower part of the midship section of the ship is of a hollow character or if thick garboards are fitted, it shall be measured from the point where the line of the flat of the bottom continued inwards cuts the side of the keel;
(c) in the case of a ship having rounded gunwales it shall be measured to the point of intersection of the moulded lines of the deck and sides, the lines extending as though the gunwale were of angular design; and
(d) if the freeboard deck is stepped and the raised part of the deck extends over the point at which the moulded depth is determined, it shall be measured to a line of reference extending from the lower part of the deck along a line parallel to the raised part of the deck;
“Position 1” or “Position 2” means those positions in which structure, openings or fittings are situated -
(a) in the case of Position 1, upon exposed freeboard and raised quarter decks, and upon exposed superstructure decks situated forward of a point located a quarter of the ship's length from the forward perpendicular; and
(b) in the case of Position 2, upon exposed superstructure decks situated abaft a quarter of the ship's length from the forward perpendicular;
“Summer load waterline” means the waterline which corresponds to the Summer load line of the ship;
“superstructure” means a decked structure (including a raised quarter deck) situated on the freeboard deck which either extends from side to side of the ship or is such that its side plating is not inboard of the shell plating by more than 4 per cent of the breadth of the ship; and where the freeboard deck consists of a lower deck as described in subparagraph (b) of the definition of “freeboard deck”, includes that part of the hull which extends above the freeboard deck;
“superstructure deck” means a deck forming the top of a superstructure;
“Type “A” ship” means a ship which is designed to carry only liquid cargoes in bulk and has the characteristics set out below -
(a) the cargo tanks of the ship have only small access openings closed by watertight gasketed covers of steel or equivalent material;
(b) the ship has high integrity of the exposed deck and has a high degree of safety against flooding in consequence of the low permeability of loaded cargo spaces and the degree of subdivision provided;
(c) if over 150 metres in length and designed to have empty compartments when loaded to the Summer load waterline, the ship shall be capable of remaining afloat after the flooding of any one of these empty compartments, at an assumed permeability of 0.95 in a condition of equilibrium; if over 225 metres in length its machinery space shall be treated as floodable compartment, but with an assumed permeability of 0.85;
(d) the condition of equilibrium referred to in subparagraph (c) above is as follows:-
(i) the final water line after the flooding is below the top of any ventilator coaming, the lower edge of any air pipe opening, the upper edge of the sill of any access opening fitted with a weathertight door, and the lower edge of any other opening through which progressive flooding may take place;
(ii) the angle of heel due to unsymmetrical flooding does not exceed 15 degrees or, if no part of the deck is immersed, an angle of heel up to 17 degrees may be accepted;
(iii) the metacentric height calculated using the constant displacement method has a positive value in the upright condition after the flooding;
(iv) the ship has adequate residual stability; and
(v) the ship has sufficient stability during intermediate stages of flooding to the satisfaction of the Assigning Authority;
“Type “B” ship” means a ship other than a Type “A” ship;
“unattended machinery space” means a machinery space which during the normal operation of the ship at sea is unattended for any period, and “attended machinery space” means a machinery space other than an unattended machinery space;
“watertight” in relation to any part of a ship means capable of preventing the passage of water in any direction;
“weathertight” in relation to any part of a ship other than a door in a bulkhead means that water will not penetrate it and so enter the hull of the ship in the worst sea and weather conditions likely to be encountered by the ship in service; and in relation to a door in a bulkhead it means a door which -
(a) is constructed of steel or other equivalent material, is permanently and strongly attached to the bulkhead, and is framed, stiffened and fitted so that the whole structure in which it is set is of equivalent strength to the unpierced bulkhead;
(b) is closed by means of gaskets, clamping devices or other equivalent means permanently attached to the bulkhead or to the door itself;
(c) when closed, is weathertight as above defined; and
(d) it can be operated from either side of the bulkhead.
PART 1 - SHIPS IN GENERAL
Structural strength and stability
2.
(1) The construction of the ship shall be such that its general structural strength is sufficient for the freeboards assigned
(2) The design and construction of the ship will be such as to ensure that its stability in all probable loading conditions shall be sufficient for the freeboards assigned, and for this purpose due consideration shall be given to the intended service of the ship and to the following criteria
(a) The area under the curve of righting levers (GZ curve) shall not be less than -
(i) 0.055 metre-radians up to an angle of 30 degrees;
(ii) 0.09 metre-radians up to an angle of 40 degrees or the angle at which the lower edge of any openings in the hull, superstructures or deckhouses which cannot be closed weathertight, are immersed if that angle is less; and
(iii) 0.03 metre-radians between the angles of heel of 30 degrees and 40 degrees or such lesser angle as is referred to in subparagraph (ii) above.
(b) The righting lever (GZ) shall be at least 0.20 metres at an angle of heel equal to or greater than 30 degrees.
(c) The maximum righting lever shall occur at an angle of heel not less than 30 degrees.
(d) The initial transverse metacentric height shall not be less than 0.15 metres. In the case of a ship carrying a timber deck cargo which complies with subparagraph (a) above by taking into account the volume of timber deck cargo, the initial transverse metacentric height shall not be less than 0.05 metres.
(3) To determine whether the ship complies with the requirements of subparagraph (2) the ship shall, unless otherwise permitted, be subject to an inclining test which shall be carried out in the presence of a survey or appointed by the Minister, for the ships listed in rule 32(5), a surveyor appointed by the Assigning Authority.
Superstructure end bulkheads
3.
Bulkheads at exposed ends of enclosed superstructures shall be of efficient construction. The height of any sill in an excess opening in such a bulkhead shall, except where otherwise stated, be at least 380 millimetres above the deck.
Hatchways: general
4.
(1) The provisions of this paragraph and of paragraph 5 and 6 apply to all hatchways in Position 1 or in Position 2 except where otherwise stated.
(2) Subject to subparagraph (3), the construction and the means for securing the weathertightness of a hatchway shall -
(a) in the case of a hatchway closed by a portable cover and secured weathertight by tarpaulins and battening devices, comply with the requirements of paragraph 5; and
(b) in the case of a hatchway closed by a weathertight cover of steel or other equivalent material fitted with gaskets and clamping devices, comply with the requirements of paragraph 6.
(3) Every hatchway located in an exposed position on a deck above a superstructure deck and leading to a space below shall be of such a construction and be fitted with such means as will secure the weathertightness of the hatchway, having regard to its position.
Hatchways closed by portable covers and secured weathertight by tarpaulins and battening devices
Coamings
5.
(1) Every hatchway shall have a coaming of substantial construction. The coaming shall be constructed of mild steel but may be constructed of other material provided that the strength and stiffness of the coaming are equivalent to those of a coaming of mild steel. The height of the coaming above the deck shall be at least -
(a) 600 millimetres, if the hatchway is in Position 1;
(b) 450 millimetres, if the hatchway is in Position 2;
Covers
(2) (a) The width of every bearing surface for a hatchway cover shall be at least 65 millimetres.
(b) In the case of a cover made of wood -
(i) the finished thickness of the cover shall be at least 60 millimetres in association with a span of not more than 1.5 metres, and the thickness of covers for larger spans shall be increased by 4 millimetres for each 100 millimetres above the span of 1.5 metres;
(ii) the end of the cover shall be protected by galvanised steel bands efficiently secured.
(c) In the case of a cover made of mild steel -
(i) the strength of the cover shall withstand the assumed load given in Table 1, and the product of the maximum stress thus calculated and the factor 4.25 shall not exceed the minimum ultimate strength of the material;
TABLE 1
Ship's Length (L)
Assumed Load, per square metre
Hatchway in Position 1
Hatchway in Position 2
24 metres
1 tonne
0.75 tonne
100 metres or over
1.75 tonnes
1.30 tonnes
Over 24 metres but less than 100 metres
to be ascertained by linear interpolation
(ii) the cover shall be so designed as to limit the deflection to not more than 0.0028 times the span under the assumed load in Table 1 appropriate to the hatchway cover.
(d) In the case of a cover made neither of mild steel nor wood the strength and stiffness of the cover shall be equivalent to those of a cover of mild steel.
Portable Beams
(3) (a) Where portable beams for supporting hatchway covers are made of mild steel, their strength shall be such as to withstand the assumed load given in Table 1, and the product of the maximum stress thus calculated and the factor 5 shall not exceed the minimum ultimate strength of the material.
(b) Such beams shall be so designed as to limit the deflection to not more than 0.0022 times the span under the assumed load in Table 1 appropriate to the beam.
(c) In the case of portable beams not made of mild steel, the strength and stiffness of the beams shall be equivalent to those of beams of mild steel.
Pontoon covers
(4) (a) Where pontoon covers of mild steel are used in place of portable beams and covers, their strength shall be such as to withstand the assumed load given in Table 1, and the product of the maximum stress thus calculated and the factor 5 shall not exceed the minimum ultimate strength of the material.
(b) Such pontoon covers shall be so designed as to limit the deflection to not more than 0.0022 times the span under the assumed load in Table 1 appropriate to the pontoon cover.
(c) Mild steel plating forming the tops of such covers shall not be less in thickness that 1 per cent of the spacing of the stiffeners or 6 millimetres, whichever is the greater.
(d) In the case of pontoon covers not made of mild steel, the strength and stiffness of the cover shall be equivalent to those of a cover of mild steel.
Carriers or sockets
(5) Carriers or sockets for portable beams shall be of substantial construction and provide efficient means for the fitting and securing of the beams. Where rolling types of beams are used the arrangements shall ensure that the beams remain properly in position when the hatchway is closed.
Cleats
(6) Cleats shall be set to fit the taper of the wedges. They shall be at least 65 millimetres wide and spaced not more than 600 millimetres, centre to centre. The end cleats along each side or end of the hatchway shall not be more than 150 millimetres from the hatch corners.
Battens and wedges
(7) Battens and wedges shall be efficient for their purpose and in good condition. Wedges shall be of tough wood or equivalent material cut to a taper of not more than 1 in 6 and shall not be less than 13 millimetres thick at the toes.
Tarpaulins
(8) At least two layers of tarpaulins shall be provided for every hatchway. They shall be waterproof, in good condition, and have satisfactory strength and equality.
Security of hatchway covers
(9) (a) Except as otherwise provided in subparagraph (b), steel bars shall be provided for every hatchway to ensure that each section of hatchway covers can be efficiently and independently secured after the tarpaulins have been battened down and that hatchway covers of more than 1.5 metres in length are secured by at least two such bars.
(b) Bars of material other than steel, or means of securing hatchway covers otherwise than by bars, may be used provided -
(i) in the case of the former the strength and stiffness of the bars used are equivalent to those of steel bars;
(ii) in either case the degree of security so achieved is not less than that which would be achieved by the use of steel bars.
Hatchways closed by weathertight covers of steel or equivalent material fitted with gaskets and clamping devices
Coamings
6.
(1) (a) Except as otherwise provided in subparagraph (b), every hatchway shall have a coaming of substantial construction the height of which above the deck shall be at least -
(i) 600 millimetres, if the hatchway is in Position 1;
(ii) 450 millimetres, if the hatchway is in Position 2;
(b) A hatchway may have a coaming of less than the height applicable under the provisions of subparagraph (a), or in exceptional circumstances a coaming may be dispensed with altogether, provided that -
(i) the safety of the ship will not be impaired in the worst sea or weather conditions likely to be encountered by the ship in service;
(ii) when any coaming is fitted it shall be of substantial construction.
Weathertight covers
(2) (a) The strength of every cover of mild steel shall be such as to withstand the assumed load given in Table 1, and the product of the maximum stress thus calculated and the factor 4.25 shall not exceed the minimum ultimate strength of the material. Every such cover shall be so designed as to limit the deflection under such a load to not more than 0.0028 times the span.
(b) Every such cover made of material other than mild steel shall have a strength and stiffness equivalent to that required for a cover of mild steel.
(c) Every cover shall be fitted with efficient means by which it can be secured and made weathertight.
(d) Mild steel plating forming the top of any cover shall be not less in thickness than one per cent of the spacing of the stiffeners of 6 millimetres whichever is the greater.
Machinery space openings
7.
(1) Every machinery space opening situated in Position 1 or Position 2 shall be efficiently framed and enclosed by a steel casing of substantial strength, account being taken of the extent, if any, to which the casing is protected by other structures.
(2) Every doorway in a casing referred to in subparagraph (1) shall be fitted with a steel weathertight door having a sill the height of which shall be at least -
(a) 600 millimetres above the deck, if the opening is in Position 1;
(b) 380 millimetres above the deck, if the opening is in Position 2;
(3) Every opening in such a casing other than a doorway shall be provided with a permanently attached cover of steel fitted with efficient means by which it can be secured and maintained weathertight and, except in the case of a cover consisting of a plate secured by bolts, is capable of being operated from either side of the opening.
(4) Every fiddley, funnel or machinery space ventilator situated in an exposed position on the freeboard deck or on a superstructure deck shall have a coaming of such a height above the deck as will provide adequate protection having regard to its position.
Miscellaneous openings in freeboard and superstructure decks
8.
(1) Every manhole and flush scuttle in Position 1 or Position 2 shall be provided with a substantial cover fitted with efficient means to secure and maintain it watertight. Unless secured by closely spaced bolts, every such cover shall be permanently attached by a chain or equivalent means so as to be available for immediate use at all times.
(2) Every opening in a deck other than a hatchway, machinery space opening, manhole or flush scuttle shall -
(a) if situated in the freeboard deck, be protected either by an enclosed superstructure or by a deckhouse or companionway equivalent in strength and weathertightness to an enclosed superstructure;
(b) if situated in an exposed position -
(i) in a deck over an enclosed superstructure and giving access to space within the superstructure; or
(ii) on top of a deckhouse on the freeboard deck and giving access to space below the deck;
be protected by an efficient deckhouse or companionway fitted with weathertight doors;
(c) if situated in an exposed position in a deck above the deck over an enclosed superstructure and giving access to space within that superstructure, be protected either in accordance with the requirements of subparagraph (b) or to such lesser extent as may be adequate having regard to its position.
(3) Every door in a companionway, deckhouse or enclosed superstructure referred to in subparagraph (2)(a) or (b) shall have a sill the height of which shall be at least -
(a) 600 millimetres, if the structure is in Position 1;
(b) 380 millimetres, if the structure is in Position 2;
Ventilators
9.
(1) (a) Except as otherwise provided in subparagraph (b) below, every ventilator in Position 1 or Position 2 leading to spaces below the freeboard deck or below the deck of an enclosed superstructure shall have a coaming of steel or equivalent material, substantially constructed and efficiently connected to the deck. The height of such coamings shall be at least -
(i) 900 millimetres above the deck, if the ventilator is in Position 1;
(ii) 760 millimetres above the deck, if the ventilator is in Position 2;
(b) Where the coaming for any ventilator referred to in subparagraph (a) above is situated in a position in which it will be especially exposed to weather and sea the height of the coaming shall be increased by such an amount as is necessary to provide adequate protection having regard to its position.
(2) If the coaming of any ventilator referred to in the subparagraph (1) exceeds 900 millimetres in height above the deck it shall be efficiently supported by stays, brackets or other means.
(3) Every ventilator in Position 1 or Position 2 which passes through a superstructure, other than an enclosed superstructure, shall have a coaming of steel or equivalent material at the freeboard deck substantially constructed and efficiently connected to that deck and at least 900 millimetres in height above that deck.
(4) Subject to subparagraph (5), every ventilator opening in Position 1 or Position 2 shall be provided with an efficient appliance by which it can be closed and secured weathertight. Every such closing appliance provided on board a ship of not more than 100 metres in length shall be permanently attached and, in the case of any other ship, shall either be so attached or be conveniently stowed near to the ventilator for which it is provided.
(5) (a) A ventilator in Position 1 the coaming of which exceeds 4.5 metres in height above the deck and a ventilator in Position 2 of the coaming of which exceeds 2.3 metres in height above the deck, need not be fitted with a closing appliance unless the fitting of such an appliance is considered necessary by the Assigning Authority in order to provide adequate protection.
(b) A ventilator leading to a battery room shall not be fitted with a closing appliance.
Air Pipes
10.
(1) The exposed parts of any air pipe leading to a ballast or other tank and extending above the freeboard deck or a superstructure deck shall be of substantial construction.
(2) The exposed opening of any such air pipe shall be fitted with efficient means of closing the opening weathertight, which shall be permanently attached so as to be ready for immediate use.
(3) Subject to subparagraph (4), the height above the deck of the exposed opening of any such airpipe shall be -
(a) at least 760 millimetres, if that deck is the freeboard deck;
(b) at least 450 millimetres, if that deck is a superstructure deck or, if the superstructure is of less than standard height, such height as is necessary to adequately compensate for the lower height of the superstructure.
(4) The heights given in subparagraph (3) may be reduced if -
(a) the working of the ship would be unreasonably impaired if those heights were adhered to; and
(b) the closing arrangements will ensure that the lower height is adequately compensated for.
Cargo ports and similar openings
11.
(1) Cargo ports and similar openings in the ship's side below the freeboard deck or in the sides or ends of superstructures which form part of the shell of the ship shall be compatible with the design of the ship and shall not exceed in number those necessary for the proper working of the ship.
(2) Every such cargo port and opening shall be provided with a door or doors so fitted and designed as to ensure watertightness and structural integrity commensurate with the surrounding shell plating.
(3) Unless the Assigning Authority permits, the lower edge of any such cargo port or opening shall not be so situated that it is below a line drawn parallel to the freeboard deck at side having as its lowest point the upper edge of the uppermost load line.
Scuppers, inlets and discharges
12.
(1) Subject to subparagraph (4), every discharge led through the shell of a ship either-
(a) from spaces below the freeboard deck; or
(b) from within any enclosed superstructure, or from within any deckhouse on the freeboard deck which is fitted with weathertight doors;
shall be fitted in accordance with subparagraphs (2) and (3) with the means for preventing water from passing inboard.
(2) Subject to subparagraph (3), this shall consist of a single automatic non-return valve fitted at the shell of the ship and having positive means of closure from a position or positions above the freeboard deck. Such positions shall be readily accessible at all times under service conditions and shall be provided with an indicator showing whether the valve is open or closed.
(3) (a) If the vertical distance from the Summer load waterline to the inboard end of a discharge pipe exceeds 0.01 (L) two automatic non-return valves having no positive means of closure may be fitted. One valve shall be situated as close to the ship's shell as practicable and be substantially connected to it and the inboard valve shall be so situated that at all times under service conditions it will be readily accessible for examination.
(b) If the vertical distance referred to in subparagraph (a) above exceeds 0.02(L) the Assigning Authority may permit a single automatic non-return valve having no positive means of closure to be fitted. This valve shall be situated as close to the ship's shell as practicable and be substantially connected to it.
(4) (a) The controls of any valve in an attended machinery space and serving a main or auxiliary sea inlet or discharge or bilge injection system shall be so sited as to be readily accessible for examination at all times under service conditions.
(b) The controls of any valve in an unattended machinery space and serving a sea inlet or discharge or bilge injection system shall be so cited as to be readily accessible at all times under service conditions, particular attention being paid in this regard to possible delay in reaching or operating the controls. In addition, the machinery space in which the valve is situated shall be equipped within efficient warning device to give warning at suitable control positions of any entry of water into the machinery space other than water resulting from the normal operation of machinery.
(c) Valves referred to in subparagraph (a) and (b) above shall be equipped with an indicator showing whether the valve is open or closed.
(5) Subject to subparagraph (6) every scupper and discharge pipe originating at any level and penetrating the shell of the ship either -
(a) more than 450 millimetres below the freeboard deck; or
(b) less than 600 millimetres above the Summer load waterline;
shall be equipped with an automatic non-return valve situated as close to the ship's shell as practicable and substantially connected thereto.
(6) Subparagraph (5) shall not apply -
(a) where the scupper or discharge pipe is fitted with the means for preventing water from passing inboard in accordance with the provisions of subparagraphs(1) to (3); or
(b) where the piping of the scupper or discharge pipe is of substantial thickness.
(7) Every scupper leading from superstructure other than an enclosed superstructure or from a deckhouse not fitted with weathertight doors shall be led overboard.
(8) All shell fittings, and the valves required by this paragraph, shall be of steel, bronze or other suitable ductile material, and all pipes referred to in this paragraph shall be of steel or equivalent material.
Side Scuttles
13.
(1) Every side scuttle to a space below the freeboard deck or to a space within an enclosed superstructure shall be fitted with a hinged inside deadlight so that it can be effectively closed and secured watertight.
(2) No side scuttle shall be fitted in a position such that its sill will be below a line drawn parallel to the freeboard deck at side and having its lowest point -
(a) 2.5 per cent of the breadth of the ship above the Summer load waterline (or Summer Timber load waterline, if assigned); or
(b) 500 millimetres above the Summer load waterline (or Summer Timber load waterline, if assigned);
whichever is the greater distance.
(3) Every side scuttle, deadlight and glass (if fitted) shall be of substantial construction and be efficiently fitted.
Freeing ports and arrangements
17. Appropriate load line
18. Position of load lines
19. Method of marking
20. Authorisation of removal, etc., of appropriate marks
21. Mark of Assigning Authority
PART IV
Conditions of Assignment
22. Requirements relevant to the assignment of freeboards
23. Compliance with conditions of assignment
24. Record of particulars
PART V
Freeboards
25. Types of freeboard
26. Determination of freeboards
27. Greater than minimum freeboards
28. Special position of deck-line: correction of freeboards
PART VI
Information for the Master
29. Information as to stability of ships
30. Information as to loading and ballasting of ships
PART VII
Equivalents
31. Equivalents
List of Schedules
Schedule 1
Appropriate load lines and seasonal zones, area and periods
Schedule 2
Conditions of assignment
Part I
Ships in general
Part II
Special requirements applicable to type “A” ships
Part III
Special requirements applicable to Type “B” ships
Part IV
Special requirements applicable to ships assigned timber freeboards
Part V
General
Schedule 3
Record of particulars
Schedule 4
Freeboards
Part I
Freeboards other than timber freeboards
Part II
Timber Freeboards
Part III
Sailing ships and other ships
Schedule 5
Freeboard Tables
Schedule 6
Information as to stability
Schedule 7
Notice of load lines to be posted up before sailing
Schedule 8
Form of Irish Load Line Certificates
S.I. No. 424 of 2001
Merchant Shipping (Load Line) Rules, 2001
I, Frank Fahey, Minister for the Marine and Natural Resources, in exercise of the powers conferred on me by
Sections 3
and
29
of the
Merchant Shipping (Load Lines) Act, 1968
(No. 17 of 1968) and the Communications (Transfer of Departmental Administration and Ministerial Functions) Order, 1987 (
S.I. No. 91 of 1987
) as adapted by the Marine (Alteration of Name of Department and Title of Minister) Order, 1997 (
S.I. No. 301 of 1997
) and having had regard to the Convention of 1966, as amended by the Protocol of 1988, hereby make the following Rules;-
PART I
PRELIMINARY AND GENERAL
1.
These Rules may be cited as the Merchant Shipping (Load Line) Rules, 2001.