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S.I. No. 300/1983 - Merchant Shipping (Passenger Ship Construction) Rules, 1983.

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  3. s)or rangeBliain nó blianta nó raon TypeCineál All Legislation Acts Statutory Instruments Advanced SearchCuardach Casta HomeBaile Statutory InstrumentsIonstraimí Reachtúla 1983 S.I. No. 300/1983 - Merchant Shipping (Passenger Ship Construction) Rules, 1983. S.I. No. 300/1983 - Merchant Shipping (Passenger Ship Construction) Rules, 1983. AmendmentsLeasuithe S.I. No. 300 of 1983. MERCHANT SHIPPING (PASSENGER SHIP CONSTRUCTION) RULES, 1983. ARRANGEMENT OF RULES PART I—GENERAL 1. Citation, commencement, interpretation and revocation 2. Exemption for certain classes of ships and individual ships 3. Classification of ships 4. Structural strength PART II WATERTIGHT SUBDIVISION 5. Application of Part II 6. Watertight subdivision 7. Peak and machinery space bulkheads, shaft tunnels, etc. 8. Double bottoms 9. Stability information 10. Intact stability 11. Stability in damaged condition 12. Ballasting 13. Construction of watertight bulkheads etc. 14. Openings in watertight bulkheads etc. 15. Means of closing openings in watertight bulkheads etc. 16. Means of operating sliding watertight doors 17. Watertight doors: signals and communications 18. Construction of watertight doors 19. Openings in the shell plating below the margin line 20. Side and other openings above the margin line 21. Weather deck 22. Partial subdivision above the margin line 23. Subdivision load lines 24. Exhibition of damage control plans PART IIA SHIPS NOT REQUIRED TO COMPLY WITH PART II 25. Application of Part IIA 26. Stability information 27. Openings in the sides of the ship PART III BILGE PUMPING ARRANGEMENTS 28. Application of Part III 29. General 30. Number and type of bilge pumps: ships of Classes I and II 31. Number and type of bilge pumps: ships of Classes II(A) and III 32. Number and type of bilge pumps etc.: ships of Classes IV to VI inclusive 33. Requirements for bilge pumps and bilge suctions 34. Arrangement of bilge pipes 35. Diameter of bilge suction pipes 36. Precautions against flooding through bilge pipes 37. Bilge valves, cocks etc. 38. Bilge mud boxes and strum boxes 39. Sounding pipes PART IV ELECTRICAL EQUIPMENT AND INSTALLATIONS—NEW SHIPS 40. Application of Part IV 41. General 42. Main generating sets: ships of Classes I to III inclusive 43. Emergency source of electric power: ships of Classes I, II and II(A) 44. Emergency source of electric power: ships of Class III 45. Emergency switchboards 46. Distribution systems 47. General lectrical precautions 48. Spare parts and tools PART IVA ELECTRICAL EQUIPMENT AND INSTALLATIONS—EXISTING SHIPS 49. Application of Part IVA 50. General PART V FIRE PROTECTION—NEW SHIPS OF CLASSES I, II AND II(A) 51. Application of Part V 52. Structure 53. Main vertical zones and horizontal zones 54. Bulkheads within a main vertical zone 55. Fire integrity of bulkheads and decks 56. Protection of stairways and lifts in accommodation and service spaces 57. Openings in "A" Class divisions 58. Openings in "B" Class divisions 59. Ventilation systems 60. Windows and sidescuttles 61. Restriction of combustible materials 62. Miscellaneous items of fire protection 63. Automatic sprinkler and fire alarm and fire detection system or automatic fire alarm and fire detection system 64. Protection of special category spaces 65. Protection of cargo spaces, other than special category spaces, intended for the carriage of motor vehicles with fuel in their tanks for their own propulsion 66. Special arrangement in machinery spaces PART VA FIRE PROTECTION: NEW SHIPS OF CLASSES I, II AND II(A) 67. Application of Part VA 68. Passenger ships carrying not more than 36 passengers 69. Main vertical zones and horizontal zones 70. Bulkheads within a main vertical zone 71. Fire integrity of bulkheads and decks 72. Protection of stairways and lifts in accommodation and service spaces 73. Openings in "A" Class divisions 74. Openings in "B" Class divisions 75. Ventilation systems 76. Windows and sidescuttles 77. Restriction of combustible materials 78. Miscellaneous items of fire protection 79. Automatic sprinkler and fire alarm and fire detection system or automatic fire alarm and fire detection system 80. Protection of special category spaces 81. Protection of cargo spaces, other than special category spaces, intended for the carriage of motor vehicles with fuel in their tanks for their own propulsion 82. Special arrangements in machinery spaces PART VB FIRE PROTECTION: NEW AND EXISTING SHIPS OF CLASSSES III TO VI INCLUSIVE 83. Application of Part VB 84. Structure of the ship 85. Divisions PART VC FIRE PROTECTION: EXISTING SHIPS OF CLASSES I, II AND II(A) 86. Application of Part VC 87. Structure 88. Main vertical zones 89. Openings in main vertical zone bulkheads 90. Separation of accommodation spaces from machinery, cargo and service spaces 91. Methods of fire protection and application 92. Protection of vertical stairways 93. Protection of lifts and vertical trunks for light and air 94. Protection of control stations 95. Protection of store-rooms etc. 96. Windows and sidescuttles 97. Ventilation systems 98. Miscellaneous items 99. Cinematograph film 100. Plans 101. Emergency source of electrical power PART VD FIRE PROTECTION: EXISTING SHIPS OF CLASSES I, II AND II(A) 102. Application of Part VD 103. Existing passenger ships carrying not more than 36 passengers PART VI BOILERS AND MACHINERY—NEW SHIPS 104. Application of Part VI 105. General 106. Boilers and other pressure vessels 107. Machinery 108. Astern power 109. Shafts 110. Boiler feed systems 111. Steam pipe systems 112. Air pressure systems 113. Cooling systems 114. Oil fuel installations: (boilers and machinery) 115. Oil fuel installations: (cooking ranges and other heating appliances) 116. Ventilation 117. Oil systems for lubricating, cooling and control 118. Communication between bridge and engine room 119. Steering gear 120. Spare gear PART VIA BOILERS AND MACHINERY—EXISTING SHIPS 121. Application of Part VIA 122. General PART VII MISCELLANEOUS: NEW SHIPS 123. Application of Part VII 124. Compasses 125. Depth-sounding devices 126. Anchors and chain cables 127. Hawsers and warps 128. Means of escape 129. Guard rails, stanchions and bulwarks PART VIIA MISCELLANEOUS: EXISTING SHIPS 130. Application of Part VIIA 131. General PART VIII 132. Alternative construction, equipment and machinery 133. Penalties 134. Power to detain SCHEDULES Schedule 1—Calculation of maximum length of watertight compartments Schedule 2—Stability information Schedule 3—Stability in damaged condition Schedule 4—Construction of watertight bulkheads, etc. Schedule 5—Areas of smooth waters and partially smooth waters S.I. No. 300 of 1983. MERCHANT SHIPPING (PASSENGER SHIP CONSTRUCTION) RULES, 1983. I, JAMES MITCHELL, Minister for Transport, in exercise of the powers conferred on me by section 10 of the Merchant Shipping (Safety Convention) Act, 1952 (No. 29 of 1952), as amended by section 9 of the Merchant Shipping Act, 1966 (No. 20 of 1966), the Transport, Fuel and Power (Transfer of Departmental Administration and Ministerial Functions) Order, 1959 ( S.I. No. 125 of 1959 ) and the Tourism and Transport (Alteration of Name of Department and Title of Minister) Order, 1980 ( S.I. No. 11 of 1980 ), hereby make the following rules: PART I—GENERAL 1 Citation, commencement, interpretation and revocation. 1.

(1)These Rules may be cited as the Merchant Shipping (Passenger Ship Construction) Rules 1983 and shall come into operation on the 1st day of December, 1983.
(2)In these Rules— " 'A' Class division" means a bulkhead or part of a deck which is: ( a ) constructed of steel or other equivalent material; ( b ) suitably stiffened; ( c ) so constructed as to be capable of preventing the passage of smoke and flame to the end of the 60 minute standard fire test; and ( d ) so insulated where necessary with suitable non-combustible materials that if the division is exposed to a standard fire test the average temperature on the unexposed side of the division shall not increase more than 139°C above the initial temperature nor shall the temperature at any one point, including any joint, rise more than 180°C above the initial temperature within the time listed below: "A—60" standard 60 minutes "A—30" " 30 " "A—15" " 15 " "A—0" " 0 " "accommodation spaces" means: ( a ) public spaces; ( b ) corridor and lobbies; ( c ) stairways; ( d ) lavatories; ( e ) cabins; ( f ) offices; ( g ) crew spaces; ( h ) barber shops; ( i ) pantries not containing cooking appliances; ( j ) lockers; ( k ) space similar to any of the foregoing and trunks to such space; "approved" means approved by the Minister; " 'B' Class division" means a bulkhead, part of a deck, ceiling or lining which is:— ( a ) so constructed as to be capable of preventing the passage of flame to the end of the first 30 minutes of the standard fire test; ( b ) so constructed as to provide an insulation standard such that, if the division is exposed to a standard fire test, the average temperature on the unexposed side of the division shall not increase more than 139°C above the intitial temperature, nor shall the temperature at any one point, including any joint, rise more than 225°C above the intitial temperature within the time listed below: "B—15" standard 15 minutes "B— 0" " 0 " ; and ( c ) constructed of suitable non-combustible materials and all materials whose use is necessary for or ancillary to its construction and erection shall be non-combustible; "breadth of the ship" means the greatest moulded breadth at or below the ship's deepest subdivision load water line; "bulkhead deck" means the uppermost deck up to which transverse watertight bulkheads are carried; "cargo space" in Parts V, VA and VC of these Rules means space appropriated for cargo (including cargo oil tanks) and trunks leading to such spaces; " 'C' Class division" means a bulkhead, ceiling or lining which is constructed of suitable non-combustible materials not being an 'A' Class division or a 'B' Class division; "continuous 'B' Class ceiling or lining" means a 'B' Class ceiling or lining which terminates only at an 'A' or 'B' Class division; "control room" means a room either within or outside a propelling machinery space from which propelling machinery and boilers may be controlled; "control stations" means spaces in which radio or main navigating equipment, or the emergency source of power, or the central fire recording equipment, or fire control equipment, or fire extinguishing installations are located, or a control room located outside a propelling machinery space; "crew space" means crew accommodation within the meaning of the Merchant Shipping (Crew Accommodation on Board Ship) Regulations, 1951 ( S.I. No. 95 of 1951 ); "criterion numeral" in relation to any ship means the criterion numeral of the ship determined in accordance with such provisions of Schedule 1 to these Rules as apply to that ship; "draught" means the vertical distance from the moulded base line amidships to a subdivision load waterline; "enclosed superstructure" has the same meaning as in the Merchant Shipping (Load Line) Rules, 1968, ( S.I. No. 205 of 1968 ); "equivalent material" where the words are used in the expression "steel or other equivalent material" means any material which, by itself or due to insulation provided, has structural and integrity properties equivalent to steel at the end of an appropriate fire test; "existing passenger ship" means a passenger ship which is not a new passenger ship; "factor of subdivision" in relation to any ship or portion thereof means the factor of subdivision determined in accordance with such of the provisions of the First Schedule to these Rules as apply to that ship or portion as the case may be; "floodable length" in relation to any portion of a ship at any draught means the maximum length of that portion having its centre at a given point in the ship which, at that draught and under such of the assumptions of permeability set forth in the First Schedule to these Rules as are applicable in the circumstances, can be flooded without submerging any part of the ship's margin line when the ship has no list; "freeboard deck" has the same meaning as in the Merchant Shipping (Load Line) Rules, 1968; "I.E.E. Regulations for the Electrical Equipment of Ships" means those Regulations issued by the Institute of Electrical Engineers dated September 1961; "IMO Resolution A265 (VIII)" means Resolution A265 (VIII) adopted by the International Maritime Organisation entitled "Regulations on Subdivision and Stability of Passenger Ships as an Equivalent to Part B of Chapter II of the International Convention for the Safety of Life at Sea 1960"; "independent power pump" means a pump operated by power otherwise than from the ship's main engines; "International Standard" means a standard specification published by the International Organisation for Standardization, obtainable from the Institute for Industrial Research and Standards (IIRS); "length" in relation to a ship, except for the purposes of Rule 19
(8), means the length of a ship measured between perpendiculars taken at the extremities of the deepest subdivision load water line; "machinery space" in every Part of these Rules, other than Parts V, VA, VB, VC, and VD means any machinery space extending from the moulded base line of the ship to the margin line and between the extreme transverse watertight bulkheads bounding the spaces containing the main and auxiliary propelling machinery, boilers serving the needs of propulsion, when installed, and the permanent coal bunkers, if any; "machinery space" in Parts V, VA, VB, VC, VD of these Rules means any machinery space of Category A and any other space containing propelling machinery, boilers, oil fuel units, steam and internal combustion engines, generators and major electrical machinery, oil filling stations, refrigerating, stabilising, ventilation and air conditioning machinery and similar spaces, and trunks to such spaces; "machinery space of Category A" means any space which contains: ( a ) internal combustion type machinery used either for main propulsion purposes or for other purposes where such machinery has in the aggregate a total power output of not less than 373 kilowatts, or ( b ) any oil fired boiler or oil fuel unit; and any trunks to such spaces; "main circulating pump" means the pump installed for circulating water through the main condenser; "main vertical zones" means the main vertical zones into which the hull, superstructure and deck houses of a ship are divided in accordance with Rules 53, 69, 88 and 103 of these Rules; "margin line" means a line drawn at least 76 millimetres below the upper surface of the bulkhead deck at the side of the ship and assumed for the purpose of determining the floodable length of the ship; "maximum service speed" means the greatest speed which the ship is designed to maintain at sea at her deepest seagoing draught; "Marine Notice" means a notice described as such and issued by the Department of Transport; "mile" means a nautical mile of 1852 metres; "the Minister" means the Minister for Transport; "navigable speed" means the minimum speed at which a ship can be effectively steered in the ahead direction; "new passenger ship" means a passenger ship the keel of which was laid, or which was at a similar stage of construction, on or after the 25th day of May, 1980, or a cargo ship which is converted to a passenger ship on or after that date; "non-combustible material" means material which when heated to a temperature of 750°C neither flames for longer than 10 seconds duration, nor raises either its internal temperature or the temperature of the test furnace more than 50°C above 750°C when tested in accordance with British Standard Specification 476: Part 4:1970 and the expression "combustible material" shall be construed accordingly; "oil fuel unit" means: ( a ) in relation to Part VI of these Rules, the equipment used for the preparation of oil fuel for delivery to an oil-fired boiler or equipment used for the preparation for delivery of heated oil to an internal combustion engine, and includes any oil pressure pumps, filters and heaters dealing with oil at a pressure greater than 1.8 bar gauge; and ( b ) in relation to Part VIA of these Rules, the equipment used for the preparation of oil fuel for delivery to the oil burners of an oil-fired boiler and includes the oil pressure pumps, filters and heaters; "passenger" means any person carried in a ship except— ( a ) a person employed or engaged in any capacity on board the ship on the business of the ship; ( b ) a person on board the ship either in pursuance of the obligation laid upon the master to carry shipwrecked, distressed or other persons, or by reason of any circumstances that neither the master nor the owner nor the charterer (if any) could have prevented; and ( c ) a child under one year of age; "passenger space" means a space provided for the use of passengers; "passenger ship" means a ship carrying more than 12 passengers and propelled by electricity or other mechanical power; "permeability" in relation to a space means the percentage of that space below the ship's margin line which, on the assumption that it is in use for the purpose for which it was appropriated, can be occupied by water; "permissible length" of a compartment having its centre at any point in the length of a ship means the product of the floodable length at that point and the factor of subdivision of the ship; "public spaces" includes halls, dining rooms, bars, smoke rooms, lounges, recreation rooms, nurseries, libraries and similar public permanently enclosed spaces; "radiotelegraph room" has the same meaning as in the Merchant Shipping (Radio Installations) Rules 1983, ( S.I. No. 308 of 1983 ); "rooms containing furniture and furnishings of restricted fire risk" means rooms containing furniture and furnishings of restricted fire risk (whether cabins, public spaces, offices or other types of accommodation) in which: ( a ) all case furniture such as desks, wardrobes, dressing tables, bureaux, dressers, is constructed entirely of approved non-combustible materials, except that a combustible veneer not exceeding 2 millimetres may be used on the working surface of such furniture; ( b ) all free-standing furniture such as chairs, sofas, tables is constructed with frames of non-combustible materials; ( c ) all draperies, curtains and other suspended textile materials have qualities of resistance to the propagation of flame in accordance with the requirements of Type B performance of British Standard 5867: Part 2; ( d ) all carpet floor coverings have qualities of resistance to the propagation of flame to the satisfaction of the Minister; and ( e ) all exposed surfaces of bulkheads, linings and ceilings shall be such that a Class 1 or 2 surface spread of flame is not exceeded; "service space" includes galleys, pantries containing cooking appliances, lockers and storerooms, paint rooms, baggage rooms, workshops other than those forming part of machinery spaces, mail rooms and similar spaces and trunks to such spaces; "settling tank" means an oil storage tank having a heating surface of not less than 0·183 square metre per tonne of oil capacity; "special category space" means any enclosed space intended for the carriage of motor vehicles with fuel in their tanks for their propulsion, into and from which such vehicles can be driven and to which passengers have access; "standard fire test" means a test in which a specimen of the relevant "A" Class or "B" Class division, having an exposed surface area of not less than 4·65 square metres and a bulkhead height or deck length of 2·44 metres, resembling as closely as possible the intended construction and including where appropriate at least one joint, are exposed in a test furnace to a series of time temperature relationships approximately as follows:— At the end of the first 5 minutes 538°C At the end of the first 10 minutes 704°C At the end of the first 30 minutes 843°C At the end of the first 60 minutes 927°C; "steering gear power unit" means: ( a ) in the case of electric steering gear, the electric motor and its associated electrical equipment; or ( b ) in the case of electro-hydraulic steering gear, the electric motor, its associated electrical equipment and connected pump; or ( c ) in the case of steam-hydraulic or pneumatic-hydraulic steering gear, the driving engine and connected pump; "subdivision load water line" means the waterline assumed in determining the subdivision of the ship in accordance with these Rules; "suitable" in relation to material means approved by the Minister as suitable for the purpose for which it is used; "summer load waterline" has the same meaning as "summer load line" in the Merchant Shipping (Load Line) Rules, 1968 ( S.I. No. 205 of 1968 ); "surface spread of flame" means the surface spread of flame classified as Class 1, Class 2 or Class 3 within the meaning of British Standard 476: Part 7: 1971; "tons" means gross tons and the gross tonnage of a ship having alternative gross tonnages shall be taken to be the larger of those tonnages; "watertight" in relation to a structure means capable of preventing the passage of water through the structure in any direction under a head of water up to the ship's margin line; "weathertight" in relation to a structure means capable of preventing the passage of sea water through the structure in ordinary sea conditions.
(3)These Rules apply to: ( a ) passenger ships registered in the State: Provided that an existing passenger ship which undergoes repairs, alterations or modifications related thereto shall, as a minimum, comply with the Merchant Shipping (Passenger Ship Construction) Rules, 1967 ( S.I. No. 98 of 1967 ) as if those Rules had not been revoked; but, to the extent that the Minister is of the opinion that it is reasonable and practicable in the circumstances, any major repairs, alterations or modifications to such a ship shall comply with the requirements of these Rules; ( b ) other sea-going passenger ships while they are within the State or the territorial waters thereof.
(4)The Merchant Shipping (Passenger Ship Construction) Rules, 1967 are hereby revoked. 2 Exemptions for certain classes of ships and individual ships.
  1. The Minister may exempt certain classes of ships or individual ships from the provisions of any of these Rules, subject to such conditions as he may specify, and may alter or cancel any exemption so granted. In particular he may exempt— ( a ) any existing ship, not being a ship converted on or after the 25th day of May, 1980 from the requirements of these Rules to the extent that he is satisfied that compliance therewith is unreasonable or impracticable in the circumstances; ( b ) any ship of Class II or II(A) (as defined in Rule 3 of these Rules) which does not proceed more than 20 miles from the nearest land , from the requirements of these Rules to the extent that he is satisfied that compliance therewith is unreasonable or impracticable by reason of the sheltered nature and conditions of the intended services of the ship; ( c ) any ship which is not normally engaged on international voyages but which, in exceptional circumstances is required to undertake a single international voyage, from any of the requirements of these Rules: Provided that she complies with safety requirements which in the opinion of the Minister are adequate for the voyage which is to be undertaken by the ship; ( d ) any ship which embodies features of a novel kind, from any of the requirements of these Rules if the application might, in his opinion, seriously impede research into the development of such features and their incorporation in ships engaged on international voyages. Any such ship shall, however, comply with safety requirements which, in the opinion of the Minister, are adequate for the service for which it is intended and are such as to ensure the overall safety of the ship; ( e ) any ship of Class I or II (as defined in Rule 3 of these Rules) employed in special trades for the carriage of large numbers of special trade passengers, such as the pilgrim trade, from any of the requirements of these Rules: Provided that she complies fully with the provisions of— (i) the Final Act of the International Conference on Special Trade Passenger Ships 1971, and (ii) the Protocol on Space Requirements for Special Trade Passenger Ships
  2. 3 Classification of ships. 3.
(1)For the purposes of these Rules passenger ships registered in the State shall be arranged in Classes as follows:— Ships engaged on international voyages. Class I. Ships engaged on voyages (not being short international voyages) any of which are long international voyages. Class II. Ships engaged on voyages (not being long international voyages) any of which are short international voyages. Ships not engaged on international voyages. Class II (A). Ships engaged on voyages of any kind other than international voyages. Class III. Ships engaged only on voyages in the course of which they are at no time more than 70 miles by sea from their point of departure and not more than 18 miles from the coast of the State, and which are at sea only in fine weather and during restricted periods. Class IV. Ships engaged only on voyages in partially smooth waters, or voyages in smooth and partially smooth waters. Class V. Ships engaged only on voyages in smooth waters. Class VI. Ships engaged only on voyages with not more than 250 passengers on board, to sea, or in smooth or in partially smooth waters, in all cases in fine weather and during restricted periods, in the course of which the ships are at no time more than 15 miles, exclusive of any smooth waters, from their point of departure nor more than 3 miles from land.
(2)In this Rule— "long international voyage" means an international voyage which is not a short international voyage within the meaning of the Merchant Shipping (Safety Convention) Act 1952 ; "partially smooth waters" means the waters of the areas specified in column 3 of the Fifth Schedule to these Rules with the restriction, if any, as to time and type of vessel specified in that column in relation to those waters; "restricted period" means a period falling wholly within the following limits:— ( a ) between the 1st day of April and the 31st day of October, both dates inclusive; and ( b ) between one hour before sunrise and one hour after sunset in the case of ships fitted with navigation lights conforming to the Collision Regulations (Ships and Water Craft on the Water) Order, 1977 ( S.I. No. 229 of 1977 ) and between sunrise and sunset in the case of any other ships; "sea" does not include any partially smooth waters; "smooth waters" means any waters not being the sea or partially smooth waters, and, in particular, means waters of any of the areas specified in column 2 of the Fifth Schedule to these Rules; "voyage" includes an excursion. 4 Structural strength.
  1. The structural strength of every ship to which these Rules apply shall be sufficient for the service for which the ship is intended. PART II WATERTIGHT SUBDIVISION 5 Application of Part II.
  2. This Part applies to every ship to which these Rules apply, not being an open or partially decked ship of Class V or a ship of Class VI carrying less than 101 passengers: Provided that a ship to which this Part applies which complies fully with all the equivalent requirements specified in IMO Resolution A. 265(VIII) need not comply with the requirements of this Part. 6 Watertight subdivision.
  3. Every ship to which this Part applies shall be subdivided by bulkheads, which shall be watertight up to the bulkhead deck, into compartments the maximum length of which shall be calculated in accordance with such of the provisions of the First Schedule to these Rules as apply to that ship. Every other portion of the internal structure which affects the efficiency of the subdivision of the ship shall be watertight, and shall be of a design which will maintain the integrity of the subdivision. 7 Peak and machinery space bulkheads, shaft tunnels, etc. 7.
(1)Every ship to which this Part applies shall be provided with a collision bulkhead which shall be watertight up to the bulkhead deck and shall be fitted at a distance from the ship's forward perpendicular of not less than 5 per cent of the length of the ship and not more than 3·05 metres plus 5 per cent of such length. If the ship has a forward superstructure, the collision bulkhead shall be extended weathertight to the deck next above the bulkhead deck. The extension shall not be required to be fitted directly over the bulkhead below, provided that it is at least 5 per cent of the length of the ship from the forward perpendicular and the part of the bulkhead deck which forms the step is made effectively weathertight. The plating and stiffeners of such extension shall be constructed in accordance with the provisions of the Fourth Schedule to these Rules as if the extension formed part of a bulkhead immediately below the bulkhead deck.
(2)Every such ship shall be provided with a watertight afterpeak bulkhead and with watertight bulkheads dividing the space appropriated to the main and auxiliary propelling machinery, boilers, if any, and the permanent coal bunkers, if any, from other spaces. Such bulkheads shall be watertight up to the bulkhead deck, provided that the afterpeak bulkhead may be stopped below the bulkhead deck if the safety of the ship is not thereby impaired.
(3)The stern gland of every such ship shall be situated in a watertight shaft tunnel or other watertight space separate from the stern tube compartment and of such a volume that if the tunnel or space is flooded the margin line will not be submerged. The stern tube shall be enclosed in a watertight compartment, the volume of which shall be the smallest compatible with the proper design of the ship. 8 Double bottoms. 8.
(1)Subject to the provisions of this Rule, every ship of Classes I, II and II(A) shall be fitted with a watertight double bottom which shall be at least of the following extent: ( a ) in ships of 50 metres but of less than 61 metres in length, from the machinery space to the collision bulkhead or as near to that bulkhead as is practicable; ( b ) in ships of 61 metres but of less than 76 metres in length, from the collision bulkhead to the afterpeak bulkhead or as near to those bulkheads as is practicable, but not necessarily in the machinery space; ( c ) in ships of 76 metres in length or over, from the collision bulkhead to the afterpeak bulkhead or as near to those bulkheads as is practicable.
(2)In case a double bottom is required by this Rule to be fitted in a ship, its moulded depth in millimetres measured at the centre line shall be not less than 406 plus 4·17 times the length of ship in metres and the inner bottom shall be continued out to the ship's sides in such a manner as to protect the bottom to the turn of the bilge. The inner bottom shall be deemed to be adequate for this purpose if the line of intersection of the outer edge of the margin plate with the bilge plating is not lower at any point than a horizontal plane passing through the point of intersection with the frame line amidships of a transverse diagonal line inclined at 25 degrees to the base line and cutting it at a point one-half of the ship's moulded breadth from the centre line.
(3)Wells constructed in the double bottom for the purpose of drainage shall not be larger nor extend downwards more than is necessary for such purpose. The depth of the well shall in no case be more than the depth of the double bottom at the centre line, less 457 millimetres, nor shall the well extend below the horizontal plane referred to in paragraph
(2)of this Rule, provided that a well extending to the outer bottom may be constructed at the after end of a shaft tunnel.
(4)Wells for purposes other than drainage shall not be constructed in the double bottom. The Minister may exempt any ship from the requirements of this paragraph in respect of any well which he is satisfied will not diminish the protection given by the double bottom.
(5)Nothing in this Rule shall require a double bottom to be fitted in way of watertight compartments of moderate size used exclusively for the carriage of liquids, if the safety of the ship will not be impaired in the event of bottom or side damage by reason of the absence of a double bottom in that position.
(6)The Minister may exempt any ship of Class II or II(A) from the requirements of a double bottom in any portion of the ship which is subdivided by application of a factor of subdivision not exceeding ·5, if he is satisfied that the fitting of a double bottom in that portion of the ship would not be compatible with the design and proper working of the ship. 9 Stability information. 9.
(1)Every ship to which this Part applies on her completion shall be inclined and the elements of her stability determined. The master shall be supplied by the owner with reliable information relating to the stability of the ship in accordance with the following provisions of this Rule.
(2)Where any alterations are made to a ship to which this Part applies so as materially to affect the stability information supplied to the master, amended stability information shall be provided. If necessary the ship shall be re-inclined.
(3)Stability information provided pursuant to paragraphs
(1)and
(2)shall be furnished in the form of a book which shall be kept on board at all times in the custody of the master. The information shall include particulars appropriate to the ship in respect of the masters specified in the Second Schedule to these Rules and shall be in the form set out in that Schedule. 10 Intact stability. 10.
(1)Every ship to which this Part applies shall, in all probable loading conditions, satisfy the following stability criteria after due correction for the effect of free surface of liquids in tanks. ( a ) The area under the curve of righting levers (GZ curve) shall not be less than:— (
  1. i)0·055 metre-radian up to an angle of 30 degrees; (
  2. ii)0·09 metre-radian up to an angle of either 40 degrees or the angle at which the lower edges of any openings in the hull, superstructures or deckhouses, being openings which cannot be closed weathertight, are immersed if that angle be less; (iii) 0·03 metre-radian between the angles of heel 30 degrees and 40 degrees or such lesser angle as is referred to in (ii). ( b ) The righting lever (GZ) shall be at least 0·20 metre at an angle of heel equal to or greater than 30 degrees. ( c ) The maximum righting lever (GZ) 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 metre.
(2)Where it is not possible, due to the particular design or operating conditions of a particular ship, to comply with the above criteria, the Minister may permit the application of such alternative criteria as he is satisfied gives a standard of stability at least as effective as that specified in paragraph
(1)of this Rule. 11 Stability in damaged condition. 11.
(1)( a ) In addition to the requirements of Rule 10 of these Rules, every ship to which this Part applies shall be so constructed as to provide sufficient intact stability in all service conditions to enable the ship to withstand the final flooding of any one of the main compartments into which the ship is subdivided in accordance with the provisions of Rule 6 of these Rules. If two of the main compartments, being adjacent to each other, are separated by a bulkhead which is stepped under the conditions of paragraph 6
(3)(a) of the First Schedule to these Rules, the intact stability shall be adequate to withstand the final flooding of those two adjacent main compartments. ( b ) Where in any such ship the factor of subdivision required under paragraph 4 or 9 of the First Schedule to these Rules is ·50 or less but more than ·33, the intact stability shall be adequate to withstand the final flooding of any two adjacent main compartments. ( c ) Where in any such ship the factor of subdivision required under paragraph 4 of the First Schedule to these Rules is ·33 or less, the intact stability shall be adequate to withstand the final flooding of any three adjacent main compartments.
(2)For the purposes of this Rule the sufficiency of the intact stability of every such ship shall be determined in accordance with the provisions of the Third Schedule to these Rules.
(3)( a ) Every ship to which this Part applies shall be so constructed as to keep unsymmetrical flooding when the ship is in a damaged condition at the minimum consistent with efficient arrangements. If cross-flooding fittings are provided in any such ship, the fittings shall, where practicable, be self-acting but in any case where controls to cross-flooding fittings are provided, they shall be capable of being operated from an accessible position above the bulkhead deck. Such fittings together with their controls as well as the maximum heel before equalisation shall be such as will not endanger the safety of the ship. The cross-flooding fittings shall be capable of reducing the heel within 15 minutes, sufficiently to meet the requirements of sub-paragraph (
  1. b)of paragraph 3 of the Third Schedule to these Rules. ( b ) In case the margin line becomes submerged during the flooding assumed for the purposes of the calculation referred to in the Third Schedule to these Rules, the construction of the ship shall be such as will enable the master of the ship to ensure (
  2. i)that the maximum angle of heel during any stage of such flooding will not be such as will endanger the safety of the ship; and (
  3. ii)that the margin line will not be submerged in the final stage of flooding.
(4)( a ) There shall be provided by the owner in every such ship a document for the use of the master of the ship containing information as to the use of any cross-flooding fittings provided in the ship. ( b ) There shall be provided by the owner in every ship of Classes I, II and II(A) a document for the use of the master of the ship containing the following additional information:— (
  1. i)information necessary for the maintenance of sufficient intact stability under service conditions to enable the ship to withstand damage to the extent referred to in the Third Schedule to these Rules; and (
  2. ii)information as to the conditions of stability on which the calculations of heel have been based, together with a warning that excessive heeling might result should the ship sustain damage when in a less favourable condition. 12 Ballasting. 12. In every ship to which this Part applies, when ballasting with water is necessary, the water ballast shall not in general be carried in tanks intended for oil fuel. In ships in which it is not practicable to avoid putting water in oil fuel tanks, oily-water separator equipment to the satisfaction of the Minister shall be fitted, or an alternative means acceptable to the Minister shall be provided for disposing of the oily-water ballast. 13 Construction of watertight bulkheads, etc. 13.
(1)In every ship to which this Part applies every portion of the ship required by these Rules to be watertight shall be constructed in accordance with such of the requirements of the Fourth Schedule to these Rules as apply to it.
(2)In every such ship all tanks forming part of the structure of the ship and used for the storage of oil fuel or other liquids including double bottoms, peak tanks, settling tanks and bunkers shall be of a design and construction adequate for that purpose. 14 Openings in watertight bulkheads, etc. 14.
(1)In every ship of Classes I, II and II(A) the number of openings in bulkheads and other structures required by these Rules to be watertight shall be the minimum compatible with the design and proper working of the ship.
(2)So far as practicable, trunks installed in connection with ventilation, forced draught or refrigeration systems in any such ship shall not pierce such bulkheads or structures.
(3)Every tunnel above the double bottom, if any, in such a ship whether for access from the crew space to the machinery space, for piping or for any other purpose, which passes through such a bulkhead shall be watertight. The means of access to at least one end of such tunnel, if it may be used as a passage at sea, shall be through a trunkway extending watertight to a height sufficient to permit access above the margin line. The means of access to the other end of the tunnel shall be through a watertight door. No tunnel shall extend through the first subdivision bulkhead abaft the collision bulkhead.
(4)Within spaces containing the main and auxiliary propelling machinery including boilers serving the needs of propulsion and all permanent bunkers, not more than one doorway, apart from the doorways to bunkers and shaft tunnels, may be fitted in each main transverse bulkhead. Where two or more shafts are fitted, the tunnels shall be connected by an inter-communicating passage. There shall be only one doorway between the machinery space and the tunnel spaces where one or two shafts are fitted and only two doorways where there are more than two shafts. All such doorways shall be located so as to have their sills as high as practicable.
(5)Doorways, manholes and access openings shall not be fitted in the collision bulkhead below the margin line of any such ship or in any other bulkhead which is required by these Rules to be watertight and which divides a cargo space from another cargo space or from a permanent or reserve bunker. Provided that the Minister may permit any such ship to be fitted with doorways in bulkheads dividing two between-deck cargo spaces if he is satisfied that— ( a ) the doorways are necessary for the proper working of the ship; ( b ) the number of such doorways in the ship is the minimum compatible with the design and proper working of the ship, and they are fitted at the highest practicable level; and ( c ) the outboard vertical edges of such doorways are situated at a distance as far as practicable from the ship's shell plating and in no case less than one-fifth of the breadth of the ship such distance being measured at right angles to the centre line of the ship at the level of the deepest subdivision load water line.
(6)In every ship of Classes I, II and II (A) bulkheads outside the spaces containing machinery which are required by these Rules to be watertight shall not be pierced by openings which are capable of being closed only by portable bolted plates.
(7)In every ship of Classes III to VI, inclusive, to which this Part applies, bulkheads required by these Rules to be watertight shall not be pierced by doorways, ventilation trunks or other similar openings.
(8)( a ) In every ship to which this Part applies— (
  1. i)valves and cocks not forming part of a pipe system shall not be fitted in any bulkhead required by these Rules to be watertight; (
  2. ii)if any such bulkhead is pierced by pipes, scuppers, electric cables or other similar fittings, provision shall be made which will ensure that the watertightness of the bulkhead is not thereby impaired; (iii) lead or other heat sensitive materials shall not be used in systems which penetrate watertight subdivision bulkheads, where deterioration of such systems in the event of fire would impair the watertight integrity of the bulkheads unless measures are taken to prevent the possibility of such deterioration. ( b ) The collision bulkhead of such a ship shall not be pierced below the margin line by more than one pipe: Provided that if the forepeak in such a ship is divided to hold two different kinds of liquids the collision bulkhead may be pierced below the margin line by not more than two pipes. Any pipe which pierces the collision bulkhead of such a ship shall be fitted with a screw-down valve capable of being operated from above the bulkhead deck, the valve chest being secured to the forward side of the collision bulkhead. 15 Means of closing openings in watertight bulkheads, etc. 15.
(1)In every ship of Classes I, II and II (A) efficient means shall be provided for closing and making watertight all openings in bulkheads and other structures required by these Rules to be watertight.
(2)Every door fitted to any such opening shall be a sliding watertight door: Provided that, in a ship of Class I, or in any ship of Class II or II (A) which is not required to be subdivided in accordance with Part III of the First Schedule to these Rules hinged watertight doors may be fitted in the following positions:— ( a ) in passenger, crew and working spaces above any deck the underside of which at its lowest point is at least 2·13 metres above the deepest sub-division load water line; and ( b ) in any bulkhead, not being a collision bulkhead, which divides two cargo between-deck spaces.
(3)Sliding watertight doors may have a horizontal or vertical motion and shall be either:— ( a ) hand operated only, or ( b ) power operated, when so required by these Rules, as well as hand operated.
(4)Hinged watertight doors fitted in accordance with sub-paragraph (a) of paragraph
(2)of this Rule shall be fitted with catches, or similar quick action closing devices, capable of being worked from each side of the bulkhead in which the door is fitted.
(5)Where sliding watertight doors are fitted in the position referred to in subparagraph (b) of paragraph
(2)of this Rule, such doors shall not be fitted with remote control devices, and every watertight door which is fitted in such a position and which is accessible while the ship is at sea, shall be fitted with efficient locking arrangements.
(6)Every door required by these Rules to be watertight shall be capable of being secured by means other than bolts and of being closed by means other than by gravity.
(7)In every ship of Classes I, II and II (A) watertight doors fitted in bulkheads between permanent and reserve bunkers, other than the doors referred to in Rule 14
(4)of these Rules, shall always be accessible. 16 Means of operating sliding watertight doors. 16.
(1)If in any ship of Class I, II or II (A) which is not required to be subdivided in accordance with Part III of the First Schedule to these Rules, any sliding watertight door fitted in a bulkhead is in a position which may require it to be opened at sea and the sill thereof is below the deepest subdivision load water line, the following provisions shall apply— ( a ) when the number of such doors (excluding doors at entrances to shaft tunnels) exceeds five, all such doors and those at the entrances to shaft tunnels, ventilation, forced draught or similar ducts shall be power operated and shall be capable of being simultaneously closed from a single position situated on the navigating bridge; ( b ) when the number of such doors (excluding doors at entrances to shaft tunnels) is greater than one, but does not exceed five, (
  1. i)where the ship has no passenger spaces below the bulkhead deck, all such doors may be hand operated; (
  2. ii)where the ship has passenger spaces below the bulkhead deck all such doors and those at the entrances to shaft tunnels, ventilation or forced draught or similar ducts, shall be power operated and shall be capable of being simultaneously closed from a single position situated on the navigating bridge; ( c ) in any ship where there are only two such doors and they lead into or are within the space containing machinery, the Minister may permit them to be hand operated only.
(2)Watertight doors the sills of which are above the deepest subdivision load water line and below the line specified in subparagraph (a) of Rule 15
(2)shall be sliding doors and may be hand operated, except in vessels to which paragraph
(3)of this rule applies.
(3)In every ship of Class II or II (A) which is subdivided in accordance with Part III of the First Schedule to these Rules all sliding watertight doors shall be operated by power and shall be capable of being simultaneously closed from a single position situated on the navigating bridge: Provided that if in any such ship there is only one such door and it is in the space containing machinery it shall not be required to be operated by power.
(4)If in any ship of Class I, II or II (A) any sliding watertight doors which may be opened at sea for the purpose of trimming coal are fitted between bunkers in the between decks below the bulkhead deck, such doors shall be operated by power.
(5)If in any ship of Class I, II or II (A) a trunkway, being part of a refrigeration, ventilation or forced draught system, is carried through more than one transverse watertight bulkhead and the sills of the openings of such trunkways are less than 2·13 metres above the deepest subdivision load water line, the sliding watertight doors at such openings shall be operated by power.
(6)( a ) If a sliding watertight door is required by these Rules to be operated by power from a single position on the navigating bridge, the power system shall be so arranged that the door can also be operated by power at the door itself. The arrangement shall be such that the door will close automatically if opened at the door itself after being closed from the single position on the navigating bridge and will be capable of being kept closed at the door itself notwithstanding that an attempt may be made to open it from such single position. Handles for controlling the power system shall be provided at both sides of the bulkhead in which the door is situated and shall be so arranged that any person passing through the doorway is able to hold both handles in the open position simultaneously without being able to set the closing mechanism in operation accidentally. ( b ) Watertight doors shall be capable of closing as expeditiously as possible, but the rate of closing shall not be so rapid as to be a danger to persons passing through the opening.
(7)( a ) In every ship of Classes I, II and II (A) there shall be at least two independent sources of power for opening and closing all sliding watertight doors which are required by these Rules to be operated by power, and each power unit shall be sufficient to operate simultaneously all such doors in the ship. The power shall be controlled from a single position on the navigating bridge, and there shall be provided at such position suitable indicators for checking that each of the two sources of power is capable of giving the required service satisfactorily. ( b ) Where the sources of power are hydraulic, there shall be two pumps each of which shall be capable of closing all watertight doors in not more than 60 seconds. In addition, there shall be for the whole installation hydraulic accumulators of sufficient capacity to operate all such doors at least three times, that is to say from the open to the closed position, from the closed to the open position and from the open to the closed position. The fluid used shall be one which does not freeze at any temperature liable to be encountered by the ship during her service.
(8)In every such ship every sliding watertight door which is operated by power shall be provided with efficient hand-operated gear having an all-round crank motion, or some other movement providing the same guarantee of safety, capable of being operated on each side of the door itself and at an accessible position above the bulkhead deck.
(9)In every such ship if a sliding watertight door is not required to be operated by power, it shall be provided with efficient hand-operating gear having an all-round crank motion, or some other movement providing the same guarantee of safety, capable of being operated on each side of the door itself and at an accessible position above the bulkhead deck.
(10)Where hand-operating gear is fitted in accordance with paragraphs
(8)and
(9)of this rule, the Minister may permit any door to be operated on one side only, if the requirements of the said paragraphs cannot be met owing to the layout of the spaces.
(11)( a ) In every such ship the time necessary for the complete closure of any door by means of hand-operating gear with the vessel upright shall not exceed 90 seconds. ( b ) The hand-operating gear shall be of such a design that the doors can be closed and opened from each of the required operating positions.
(12)In every such ship the hand-operating gear for operating the sliding watertight doors in the machinery space from above the bulkhead deck shall be placed outside the machinery space unless such a position is inconsistent with the efficient arrangement of the necessary gearing.
(13)In every such ship the means of operation of any watertight door, whether power operated or not, shall be capable of closing the door when the ship is listed to 15 degrees either way. 17 Watertight doors: signals and communications. 17.
(1)Every sliding watertight door fitted in a ship of Class I, II or II (A) shall be connected with an indicator at each position from which the door may be closed, other than the door itself, showing when the door is open and when it is closed.
(2)There shall be provided in connection with every such door which is operated by power a means of giving an audible warning signal at the door itself when the door is about to be closed. The arrangement shall be such that one movement of the operating handle at the position from which the door is about to be closed will be sufficient to sound the signal and to close the door, the signal preceding the movement of the door by an interval sufficient to allow the movement of persons and articles away from the door. The signal shall continue to sound until the door is completely closed.
(3)If any door required by these Rules to be watertight is not capable of being operated from a single position on the navigating bridge, means of communication by telegraph, telephone or any other direct means shall be provided whereby the officer of the watch may communicate with the person responsible for the closing of the door. 18 Construction of watertight doors. 18.
(1)Every door required by these Rules to be water tight shall be of such design, material and construction as will maintain the integrity of the watertight bulkhead in which it is fitted. Any such door giving direct access to any space which may contain bunker coal shall, together with its frame, be made of cast or mild steel. Any such door in any other position shall, together with its frame, be made of cast or mild steel or cast iron.
(2)Every sliding watertight door shall be fitted with rubbing faces of brass or similar material which may be fitted either on the door itself or on the door frame, and which, if they are less than one inch in width, shall be fitted in recesses.
(3)If screw gear is used for operating such a door, the screw shall work in a nut of suitable metal which is resistant to corrosion.
(4)The frame of every vertically sliding watertight door shall have no groove at the bottom thereof in which dirt may lodge. The bottom of such a frame, if it is of skeleton form, shall be so arranged that dirt cannot lodge therein. The bottom edge of every such door shall be tapered or bevelled.
(5)Every vertically sliding watertight door which is operated by power shall be so designed and fitted that, if the power supply ceases, there shall be no danger of the door dropping.
(6)Every horizontally sliding watertight door shall be so installed as to prevent its moving if the ship rolls, and if necessary a clip or other suitable device shall be provided for that purpose. The device shall not interfere with the closing of the door when the door is required to be closed.
(7)The frame of every watertight door shall be properly fitted to the bulkhead in which the door is situated, and the jointing material between the frame and the bulkhead shall be of a type which will not deteriorate or be injured by heat.
(8)Every watertight door, being a coal-bunker door, shall be provided with screens or other devices to prevent coal from interfering with its closing. 19 Openings in the shell plating below the margin line. 19.
(1)In every ship to which this Part applies, the number of sidescuttles, scuppers, sanitary discharges and other openings in the shell below the margin line shall be the minimum which, in the opinion of the Minister, is compatible with the design and proper working of the ship.
(2)The arrangements for closing every such opening below the margin line shall be consistent with its intended purpose and shall be such as will ensure watertightness. Sidescuttles.
(3)( a ) In every ship of Classes I, II and II(A) the number of sidescuttles below the margin line which are capable of being opened shall be the minimum which, in the opinion of the Minister, is compatible with the requirements of the proper operation of the ship. ( b ) In every ship of Classes I, II, II(A) and III which is marked with a summer load line no sidescuttle shall be fitted in a between-decks such that its sill will be below a line drawn parallel to the freeboard deck at its side and which has its lower point at a distance of either— (
  1. i)2·5 per cent of the breadth of the ship above the summer load waterline; or (
  2. ii)500 millimetres above the summer load waterline; whichever is the greater. Every sidescuttle in the between-decks of such a ship shall be either of a non-opening type or of an opening type fitted with locking arrangements approved by the Minister. ( c ) If, in the between-decks of any ship of Class II(A) which is not marked with a summer load line, the sill of any sidescuttle is below a line drawn parallel to the bulkhead deck at its side and which has its lowest point at a distance of 2·5 per cent of the breadth of the ship above the deepest subdivision load waterline, every sidescuttle in that between-decks shall be of a non-opening type. If in a between-decks of such a ship all the sills of the sidescuttles are above the aforesaid line, every sidescuttle in that between-decks shall be either of a non-opening type or of an opening type fitted with approved locking arrangements. No sidescuttle shall be so fitted that its sill is below the deepest subdivision load waterline. ( d ) In every ship of Classes III to VI inclusive all side scuttles below the margin line shall be of the non-opening type. ( e ) In every ship to which this Rule applies, each side scuttle below the margin line shall be fitted with an efficiently hinged deadlight permanently attached so that it can be readily and effectively closed and secured watertight. ( f ) In every ship to which this Rule applies, a sidescuttle shall not be fitted below the margin line to any space appropriated solely for the carriage of cargo or coal. If sidescuttles are fitted below the margin line to spaces appropriated to carry either cargo or passengers, such sidescuttles and their deadlights shall be fitted with approved locking arrangements.
(4)Automatic ventilating sidescuttles shall not be fitted below the margin line in the shell of any ship to which this rule applies. Inlets and discharges.
(5)( a ) In every ship each inlet and discharge led through the shell below the margin line shall be fitted with efficient and readily accessible means for preventing the accidental admission of water into the ship. Lead or other heat-sensitive materials shall not be used for pipes fitted outboard of shell valves in inlets or discharges or in any other place where the deterioration of such pipes in the event of fire would give rise to the danger of flooding. ( b ) Each discharge led through the shell from any space below the margin line, not being a discharge in connection with machinery, shall be provided with either: (
  1. i)one automatic non-return valve fitted at the shell of the ship and having positive means of closure from a position or positions above the bulkhead deck or, in a ship which is marked with a summer load line, from a position or positions above the freeboard deck, whichever is the higher. Such positions shall be readily accessible at all times under service conditions and the means of closure shall be provided in either case with an indicator showing whether the valve is open or closed; or (
  2. ii)two automatic non-return valves having no positive means of closure in any ship which is marked with a summer load line and in which the vertical distance from the summer load waterline to the inboard end of the discharge pipe exceeds ·01L, (where L is the length of the ship as defined in the Merchant Shipping (Load Lines) (Length of Ship) Regulations, 1968 ( S.I. No. 208 of 1968 ) and in any ship which is not marked with a summer load line. One such valve shall be situated as close to the ship's shell as practicable and substantially connected thereto and the inboard valve shall be situated above the deepest load waterline and in a position such that it will at all times under service conditions be readily accessible for examination. ( c ) In every ship which is marked with a summer load line every discharge led through the shell below the margin line from any space above the margin line, being a space below the freeboard deck or from within any enclosed superstructure or from within any deckhouse on the freeboard deck which is fitted with weathertight doors, not being a discharge in connection with machinery, shall be fitted with either: (
  3. i)one automatic non-return valve fitted in compliance with the requirements of subparagraph (
  4. b)(i); or (
  5. ii)two automatic non-return valves fitted in compliance with the requirements of subparagraph (b)(ii); or (iii) one automatic non-return valve having no positive means of closure in any ship where the vertical distance from the summer load waterline to the inboard end of the discharge pipe exceeds ·02L, (where L is the length of the ship as defined in the Merchant Shipping (Load Lines) (Length of Ship) Regulations, 1968). Such valve shall be situated as close to the ship's shell as practicable and substantially connected thereto. ( d ) In every ship which is marked with a summer load line every scupper and discharge originating at any level above that described in subparagraph (
  6. c)of this rule and penetrating the shell of the ship either: (
  7. i)more than 450 millimetres below the freeboard deck; or (
  8. ii)less than 600 millimetres above the summer load waterline shall be equipped with an automatic non-return valve situated as close to the ship's shell as practicable and substantially connected thereto: Provided that this subparagraph shall not apply:— ( aa ) where the scupper or discharge pipe is fitted with means for preventing water from passing inboard in accordance with the provisions of subparagraphs (
  9. b)(
  10. i)and (
  11. ii)or subparagraphs (
  12. c)(i), (
  13. ii)and (iii); or ( bb ) in any case in which the piping of the scupper, or discharge pipe is of adequate thickness. ( e ) In every ship all cocks and valves attached to inlets or discharges, other than inlets or discharges, connected with machinery, being cocks or valves fitted below the margin line or the failure of which may give rise to the danger of flooding, shall be made of steel, bronze or other equivalent material. ( f ) In every ship inlets and discharges connected with main or auxiliary machinery shall be fitted with cocks or valves between the pipes and the shell of the ship or between the pipes and a box attached to the shell. The controls to such cocks and valves or of any bilge injection system shall be readily accessible at all times under service conditions and fitted with indicators to show whether the cock or valve is open or closed. All such cocks or valves attached to such inlets or discharges and all fittings outboard thereof shall be made of steel, bronze or other equivalent material. If made of steel, such cocks and valves shall be protected against corrosion. ( g ) Discharge pipes led through the shell below the margin line of any ship of Classes I, II, II(A) and III shall not be fitted in a direct line between the outboard opening and the connection with a deck, water closet or other similar fitting, but shall be arranged with bends or elbows of substantial metal other than cast iron or lead. ( h ) In every ship all discharge pipes led through the shell below the margin line and the valves relating thereto shall be protected from damage. ( i ) In every ship all bolts connecting cocks, valves, discharge pipes and other similar equipment to the shell plating below the margin line shall have their heads outside the shell and shall be either countersunk of cup-headed. ( j ) In every ship efficient means shall be provided for the drainage of all watertight decks below the margin line and any drainage pipes shall be so fitted with valves or otherwise arranged as to avoid the danger of water passing from a damaged to an undamaged compartment. ( k ) In every ship the inboard opening of every ash-shoot, rubbish-shoot and other similar shoot shall be fitted with an efficient watertight cover, and, if such opening is below the margin line, it shall also be fitted with an automatic non-return valve in the shoot in a readily accessible position above the ship's deepest subdivision load waterline. The valve shall be of the horizontal balanced type, and shall normally be kept closed and provided with local means for securing it in a closed position. The requirements of this subparagraph shall not apply to ash ejectors and expellers the inboard openings of which are in the ship's stokehold and below the deepest subdivision load waterline. Such ejectors and expellers shall be fitted with means which will prevent water entering the ship. ( l ) (
  14. i)In every ship each gangway port, cargo port or coaling port fitted in the shell below the margin line shall be provided with a door or doors so fitted and designed as to ensure watertightness and structural integrity commensurate with the surrounding shell. (
  15. ii)In every ship which is marked with a summer load line no such gangway port, cargo port or coaling port below the freeboard deck shall, unless the Minister otherwise approves, to be so situated that the lower edge of the port or opening will be below a line drawn parallel to the freeboard deck at its side and having as its lowest point the upper edge of the uppermost load line. In any ship which is not marked with a summer load line the lower edge of the port or opening shall in no case be below the deepest subdivision load waterline.
(6)The Minister may exempt any ship of Classes IV to VI, inclusive, from the requirements of paragraph
(5)of this Rule to the extent that he is satisfied that compliance therewith is unreasonable or impracticable in the circumstances. 20 Side and other openings above the margin line. 20.
(1)In every ship, sidescuttles, windows, gangway ports, cargo ports, bunkering ports and other openings in the shell above the margin line and their means of closing shall be of efficient design and construction and of sufficient strength having regard to the spaces in which they are fitted and to their positions relative to the deepest subdivision load waterline and to the intended service of the ship.
(2)In every ship efficiently hinged deadlights, which can be easily closed and secured watertight, shall be provided for all sidescuttles to spaces below the first deck above the bulkhead deck and, in a ship which is marked with a summer load line, to all sidescuttles in an enclosed superstructure.
(3)In every ship which is marked with a summer load line, each discharge led through the shell above the margin line from a space below the freeboard deck or from within any enclosed superstructure or from within any deckhouse on the freeboard deck which is fitted with weathertight doors, shall be fitted in compliance with the requirements of Rule 19
(5)(
  1. b)(i), (
  2. ii)or (
  3. c)(iii) of these Rules with efficient means for preventing water from passing inboard. 21 Weather deck. 21. In every ship to which this Part applies the bulkhead deck or a deck above the bulkhead deck shall be weathertight. All openings in an exposed weathertight deck shall have coamings of adequate height and strength and shall be provided with efficient and rapid means of closing so as to make them weathertight. Freeing ports, open rails and scuppers shall be fitted as necessary for rapidly clearing the weather deck of water under all weather conditions. 22 Partial subdivision above the margin line. 22. In every ship to which this Part applies all reasonable and practicable measures shall be taken to limit where necessary the entry and spread of water above the bulkhead deck, which measures may include partial bulkheads or webs. Where such partial watertight bulkheads and webs are fitted on the bulkhead decks, above or in the immediate vicinity of main subdivision bulkheads, they shall have watertight shell and bulkhead deck connections so as to restrict the flow of water along the deck when the ship is heeled in a damaged condition. Where such partial watertight bulkheads do not coincide with the bulkheads below, the bulkhead deck between shall be made effectively watertight. 23 Subdivision load lines. 23.
(1)Every ship shall be marked on its side amidships with the subdivision load lines assigned to it by the Minister. The marks shall consist of horizontal lines 25 millimetres in breadth and 230 millimetres in length for any ship which the Merchant Shipping (Load Lines) Act, 1968 ( S.I. No. 17 of 1968 ) applies and 305 millimetres in length for any other ship. The marks shall be painted in white or yellow if the background is dark or in black if the background is light and, if the sides of the ship are of metal, they shall be cut in, centre punched or indicated by welded beads; if the sides of the ship are of wood the marks shall be cut into the planking to a depth of not less than 3 millimetres; if the sides are of other materials to which the foregoing methods of marking cannot effectively be applied, the marks shall be permanently affixed to the sides of the ship by bonding or some other effective method.
(2)The subdivision load lines shall be identified with the letter C, and, in ships of Classes I and II, with consecutive numbers beginning from the deepest subdivision load line which shall be marked C1. In ships of Classes II (A) to VI inclusive, ( a ) if there is only one subdivision load line, it shall be identified with the letter C; ( b ) if there is more than one subdivision load line, the subdivision load lines shall be identified with the letter C and with consecutive letters beginning from the deepest subdivision load line, which shall be marked CA. The identifying letters and numerals shall in every case be painted and cut in or centre punched or indicated by welded beads or otherwise marked as appropriate, on the sides of the ship in the same manner as the lines to which they relate.
(3)Ships which are assigned freeboards and are required to be marked with load lines under the Merchant Shipping (Load Line) Rules, 1968 shall be marked as follows:— ( a ) where the lowest of the ordinary load lines is higher on the ship's side than the deepest subdivision load line, the latter shall form part of the same marking, the vertical line of the grid being extended downwards as necessary to reach the lowest subdivision load line. The subdivision load line or lines shall appear on the after side of the vertical line; ( b ) where the deepest subdivision load line coincides or nearly coincides with the fresh water line, the subdivision marking C1 may be indicated on the forward side of the grid; ( c ) where an "all seasons" freeboard is assigned and the deepest subdivision load line coincides with the horizontal line intersecting the load line mark, a vertical line shall be marked extending downwards from the fresh water load line to reach the subdivision load line marked C1 on the after side of the vertical line. 24 Exhibition of damage control plans.
  1. In every ship to which this part applies there shall be permanently exhibited, for the information of the officer in charge of the ship, plans showing clearly for each deck and hold the boundaries of the watertight compartments, the openings therein, the means of closing such openings, the position of the controls and the arrangements for the correction of any list due to flooding. In addition, booklets containing such information shall be made available by the owner for the use of the officers of the ship. PART IIA SHIPS NOT REQUIRED TO COMPLY WITH PART II. 25 Application of Part IIA.
  2. This Part applies to every open or partially decked ship of Class V and to every ship of Class VI carrying less than 101 passengers. 26 Stability information.
  3. Every ship to which this Part applies, upon completion, shall be inclined and the elements of her stability determined: Provided that, where no hydrostatic data is available, the inclining test will not be required to be carried out, but a test will be required to determine the angle of heel which will occur with two-thirds of the passengers on one side of the ship, and one-third on the other side, which shall not normally exceed seven degrees. 27 Openings in the sides of the ship. 27.
(1)Efficient means shall be provided for preventing the accidental admission of water into any ship to which this Part applies through any openings in the sides of the ship.
(2)Every sidescuttle fitted in such a ship shall be of the non-opening type and shall be watertight and of sufficient strength having regard to its position in the ship. PART III. BILGE PUMPING ARRANGEMENTS. 28 Application of Part III
  1. This part applies to every ship to which these Rules apply. 29 General.
  2. Except in the case of open ships of Classes V and VI not exceeding 12 metres in length, and not proceeding on voyages to a point more than 3 miles from the starting point, every ship to which these Rules apply shall be provided with an efficient pumping plant capable of pumping from and draining any watertight compartment in the ship, other than a space permanently appropriated for the carriage of fresh water, water ballast or oil and for which other efficient means of pumping or drainage is provided, under all conditions likely to arise in practice after a casualty, whether or not the ship remains upright. Wing suctions shall be provided if necessary for that purpose. Efficient arrangements shall be provided whereby water in any watertight compartment may find its way to the suction pipes. Efficient means shall be provided for draining water from all insulated holds and insulated between decks in such a ship. Provided that the Minister may allow the provision for drainage to be omitted in a particular compartment if he is satisfied— ( a ) that having regard to the calculations made in accordance with the conditions set out in the Third Schedule to these Rules, the safety of the ship will not thereby be impaired; and ( b ) that the provision of drainage would otherwise be undesirable. 30 Number and type of bilge pumps: ships of Classes I and II. 30.
(1)Every ship of Classes I and II shall be provided with power pumps connected to the bilge main in accordance with the following table: Criterion numeral Less than 30 30 and over Main engine pump (which may be replaced by one independent power pump) ... ... ... ... 1 1 Independent power pumps ... ... 2 3
(2)Such pumps shall be arranged as follows: ( a ) one of the pumps shall be an efficient emergency pump of a submersible type having its source of power and the necessary controls situated above the ship's bulkhead deck. Such pump and its source of power shall not be installed forward of the collision bulkhead or nearer to the side of the ship than one-fifth of the breadth of the ship measured at right angles to the centre line of the ship at the level of the deepest subdivision load line; or ( b ) the power pumps in the ship and their sources of power shall be so disposed throughout the ship's length that under any condition of flooding which the ship is required to withstand at least one such pump in an undamaged watertight compartment will be available. 31 Number and type of bilge pumps: ships of Classes II (A) and III. 31.
(1)Every ship of Classes II (A) and III shall be provided with bilge pumps in accordance with the following table: Number of Pumps Length of Ship in metres Main Engine Pump* Independent Power Pumps Hand Pumps† Under 15 1 — One of the lever type for each watertight compartment or one of the crank type. 15 and under 30·5 1 1 One of the lever type for each watertight compartment or one of the crank type. 30·5 and under 76 1 1 One of the crank type. 76 and over 1 2 — *The main engine pump my be replaced by one independent power pump. † The hand pumps specified in this column may be replaced by one independent pump.
(2)In every such ship of 76 metres in length or over and in every such ship of under 76 metres in length in which a hand pump is replaced by an independent power pump, Rule 30
(2)of these Rules shall apply to such a ship as it applies to ships of Classes I and II. 32 Number and type of bilge pumps etc.: ships of Classes IV to VI inclusive. 32.
(1)Every ship of Class IV shall be provided with a power bilge pump, which may be worked by the ship's main engines and, in addition, a hand pump other than a hand pump of the lever type.
(2)Every ship of Classes V and VI shall be provided with bilge pumps and means for bailing as follows:— ( a ) Every such ship exceeding 18 metres in length shall be provided with a power pump, which may be worked by the main engine and, in addition, a hand pump other than a hand pump of the lever type; ( b ) Every such ship, being a decked ship not exceeding 18 metres in length, shall be provided with a hand pump other than a hand pump of the lever type; ( c ) Every such ship, being a partially decked ship not exceeding 18 metres in length, shall be provided with a hand pump and, in addition, two bailers or one bailer and one bucket; ( d ) Every such ship, being an open ship exceeding 12 metres in length but not exceeding 18 metres in length, shall be provided with a hand pump and in addition, two bailers or one bailer and one bucket; ( e ) Every ship of Classes V and VI, being an open ship not exceeding 12 metres in length, and proceeding beyond 3 miles from the starting point of her voyage shall be provided with a hand pump and, in addition, two bailers or one bailer and one bucket; ( f ) Every ship of Classes V and VI being an open ship not exceeding 12 metres in length, and not proceeding on voyages more than 3 miles from the starting point, shall be provided with two bailers or one bailer and one bucket. 33 Requirements for bilge pumps and bilge suctions. 33.
(1)Power bilge pumps fitted in any ship to which these Rules apply, shall where practicable be placed in separate watertight compartments so arranged or situated as not to be readily flooded by the same damage, and if the ship's engines and boilers are in two or more watertight compartments the bilge pumps there available shall be distributed through such compartments as far as possible.
(2)Every bilge pump provided in such a ship in compliance with these Rules shall be self-priming unless efficient means of priming are provided. Every such pump, other than a hand pump of the lever type and a pump provided for peak compartments only, shall, whether operated by hand or by power, be so arranged as to be capable of drawing water from any space required by Rule 29 of these Rules to be drained.
(3)Every independent power bilge pump in such a ship shall be capable of giving a speed of water of not less than 122 metres per minute through the ship's main bilge pipe when its diameter is that determined by Rule 35
(1)of these Rules. Every such independent power bilge pump shall have a direct suction from the space in which it is situated, provided that not more than two direct suctions shall be required in any one space. Every such suction shall be of a diameter not less than that of the ship's main bilge pipe. The direct suctions in the ship's machinery space shall be so arranged that water may be pumped from each side of the space through direct suctions to independent power bilge pumps.
(4)There shall be provided in the stokehold of every such ship, being a coal burning ship, a flexible suction hose of sufficient length to reach from a fitting on an independent power bilge pump in the ship to each side of the stokehold bilges. The hose shall be in addition to the other bilge suctions required by this rule and shall have an internal diameter of 100 millimetres or 12 millimetres larger than that of the largest branch bilge suction required by Rule 35 of these Rules, whichever is the lesser.
(5)One of the sea water pumps circulating each main engine in such a ship shall be fitted with direct suction connections, which shall be provided with non-return valves, to the lowest drainage level in the ship's machinery space, or as near thereto as will satisfy the Minister. Such connections in steamships shall be of a diameter at least two-thirds of that of the ship's main sea inlet, and in motor ships of the same diameter as the pump inlet. Where in the opinion of the Minister any main circulating pump is not suitable for this purpose, a direct emergency bilge suction shall be led from the largest available independent power driven pump to the drainage level of the machinery space; the suction shall be of the same diameter as the main inlet of the pump used. The capacity of the pump so connected shall exceed that of a required bilge pump by an amount satisfactory to the Minister. The open end of such suctions or the strainer, if any, attached thereto shall be accessible for clearing. If the boiler fuel may be coal and there is no watertight bulkhead between the ship's engines and boilers, a direct discharge overboard shall be fitted from at least one of the aforesaid pumps unless a by-pass is fitted to the circulating discharge thereof. The spindles of the ship's main sea inlet and of the direct suction valves shall extend well above the engine room platform.
(6)The hand bilge pumps in such a ship shall be workable from above the ship's bulkhead deck, if any, and shall be so arranged that the bucket and tail valve can be withdrawn for examination and overhaul under flooding conditions. 34 Arrangement of bilge pipes. 34.
(1)In every ship of which these Rules apply all pipes from the pumps for draining cargo spaces or any part of the machinery space shall be distinct from pipes which may be used for filling or emptying spaces in which water or oil is carried.
(2)All bilge pipes used in or under coal bunkers or fuel storage tanks or in boiler or machinery spaces, including spaces in which oil-settling tanks or oil fuel pumping units are situated, shall be of steel or other suitable material.
(3)Bilge suction pipes in such a ship shall not be led through oil tanks unless the pipes are enclosed in an oiltight trunkway. Such pipes shall not be led through double bottom tanks.
(4)Such pipes shall be made with flanged joints and shall be thoroughly secured in position and protected where necessary against the risk of damage. Efficient expansion joints or bends shall be provided in each line of pipe, and where a connection is made at a bulkhead or elsewhere with a lead bend the radius of each bend and the distance between the axes of the straight parts of the pipes shall be not less than three times the diameter of the pipe and the length of any bend shall be not less than eight times that diameter. 35 Diameter of bilge suction pipes. 35.
(1)Subject to the provisions of paragraphs
(2)and
(3)of this Rule, in every ship of Classes I to III inclusive, and in every ship of Classes IV to VI inclusive, which is required by Rule 32 of these Rules to be provided with a pump, the internal diameter of main and branch bilge suction pipes shall be determined to the nearest standard size calculated according to the following formulae:— dm=25+[1·68 √ L (B + D)] db=25+[2·15 √ I (B + D)] where dm=internal diameter of the main bilge suction pipes in millimetres. db= internal diameter of the branch bilge suction pipes in millimetres. L=length of ship in metres. B=breadth of ship in metres. D=moulded depth of ship at bulkhead deck in metres. I=length of compartment in metres.
(2)No main bilge suction pipe in any ship of Classes I to III inclusive, shall be less than 63 millimetres in bore, and no branch suction pipe shall be less than 50 millimetres or need be more than 100 millimetres in bore.
(3)No bilge suction pipe in any ship of Classes IV to VI inclusive, which is required by Rule 32 of these Rules to be provided with a pump, shall be less than 32 millimetres in bore. 36 Precautions against flooding through bilge pipes. 36.
(1)In every ship to which Part II of these Rules applies the bilge and ballast pumping systems shall be so arranged as to prevent water passing from the sea or from water ballast spaces into the ship's cargo spaces or into any part of the machinery space or from one watertight compartment in the ship to another. The bilge connection to any pump which effects suction from the sea or from water ballast spaces shall be made by means of either a non-return valve or a cock which cannot be opened at the same time to the bilges and to the sea or to the bilges and the water ballast spaces. Valves in bilge distribution boxes shall be of a non-return type. An arrangement of lock-up valves or of blank flanges shall be provided to prevent any deep tank in such a ship being inadvertently run up from the sea when it contains cargo or pumped out through a bilge pipe when it contains water ballast, and instructions for the working of such arrangement shall be conspicuously displayed nearby.
(2)In every such ship provision shall be made to prevent the flooding of any watertight compartment served by a bilge suction pipe in the event of the pipe being severed or otherwise damaged in any other watertight compartment through collision or grounding. Where any part of such a pipe is situated nearer to the side of the ship than one-fifth of the mid-ship breadth of the ship measured at the level of the deepest subdivision load water line or in any duct keel a non-return valve shall be fitted to the pipe in the watertight compartment containing the open end of the pipe.
(3)In every ship of Classes I to III inclusive, the bilge main shall not be situated nearer to the ship's side than one-fifth of the breadth of the ship measured at right angles to the centre line of the ship at the level of the deepest subdivision load water line, and where any bilge pump or its pipe connecting it to the bilge main is not so situated the arrangements shall be such that damage to the ship's side penetrating to the extent of one-fifth of the ship's breadth measured as described in this paragraph shall not put the other bilge pumping arrangements out of action. 37 Bilge valves, cocks, etc. 37.
(1)In every ship to which Part II of these Rules applies all distribution boxes, valves and cocks fitted in connection with the bilge pumping arrangements shall be in positions which are accessible at all times in ordinary circumstances and shall be so arranged that in the event of flooding one of the bilge pumps may operate on any watertight compartment in the ship. If in any such ship there is only one system of pipes common to all such pumps, the necessary valves or cocks for controlling the bilge suctions shall be capable of being operated from above the ship's bulkhead deck. If an emergency bilge pumping system is provided in addition to the main bilge pumping system it shall be independent of the main system and shall be so arranged that a pump is capable of being operated on any watertight compartment under flooding conditions; in that case the cocks and valves necessary for the operation of the emergency system shall be capable of being operated from above the bulkhead deck. Provided that in any ship of Class II(A) or Class III of under 30·5 metres in length provided with a hand pump of the lever type for each watertight compartment in accordance with the provisions of Rule 31
(1)of these Rules, the valves and cocks on the bilge main for controlling the bilge suctions shall not be required to be capable of being operated from above the ship's bulkhead deck if they are in the same compartment as a power pump.
(2)In every such ship every operating rod for bilge suction valves or cocks shall be led as directly as possible. Every such rod passing through a cargo or coal bunker space shall be protected against damage in such spaces.
(3)In every such ship every valve or cock which is required by this Rule to be operated from above the bulkhead deck shall have its control at its place of operation clearly marked to show the purpose it serves and how it may be opened and closed and shall be provided with a means to indicate when it is open and when it is closed. 38 Bilge mud boxes and strum boxes.
  1. Bilge suctions in the machinery space of every ship to which these Rules apply shall be led from readily accessible mud boxes placed wherever practicable above the level of the working floor of such space. The boxes shall have straight tailpipes to the bilges and covers secured in such a manner as will permit them to be readily opened and closed. The suction ends in hold spaces and tunnel wells shall be enclosed in strum boxes having perforations approximately 10 millimetres in diameter, and the combined area of such perforations shall be not less than twice that of the end of the suction pipe. Strum boxes shall be so constructed that they can be cleared without breaking any joint of the suction pipe. 39 Sounding pipes.
  2. In every ship to which Part II applies all tanks forming part of the structure of the ship and all watertight compartments, not being part of the machinery space, shall be provided with efficient sounding arrangements which shall be protected where necessary against damage. Where such arrangements consist of sounding pipes, a thick steel doubling plate shall be securely fixed below each sounding pipe for the sounding rod to strike upon. All such sounding pipes shall extend to positions above the ship's bulkhead deck which shall at all times be readily accessible. Sounding pipes for bilges, cofferdams and double bottom tanks, being bilges, cofferdams and tanks situated in the machinery space, shall so extend unless the upper ends of the pipes are accessible in ordinary circumstances and are furnished with cocks having parallel plugs with permanently secured handles so loaded that on being released they automatically close the cocks. Sounding pipes for the bilges or insulated holds shall be insulated and not less than 63 millimetres in diameter. PART IV ELECTRICAL EQUIPMENT AND INSTALLATIONS—NEW SHIPS. 40 Application of Part IV.
  3. This Part applies to every new ship to which these Rules apply. 41 General. 41.
(1)In every ship to which this Part applies the electrical equipment and installations, other than the electrical means of propulsion, if any, shall be such that the electrically operated services essential for the safety of the ship and of persons on board can be maintained under emergency conditions.
(2)In every ship to which this Part applies, the electrical equipment and installations, including any electrical means of propulsion, shall be such that the ship and all persons on board are protected against electrical hazards. The electrical equipment and installations shall comply with the requirements specified in Marine Notice No. 22 of 1983 and shall include a reference to any document amending these requirements which is considered by the Minister to be relevant from time to time and is specified in a Marine Notice. 42 Main generating sets: ships of Classes I to II inclusive. 42.
(1)Every ship of Classes I to III inclusive, being a ship in which electrical power is the only power for maintaining the auxiliary services essential for the propulsion or safety of the ship, shall be provided with two or more main generating sets of such power that the aforesaid services can be operated when any one of the sets is out of service. Arrangements shall be made which will safeguard such sets from being rendered inoperative in the event of the partial flooding of the ship's machinery space through leakage from a damaged compartment or otherwise.
(2)In every such ship where there is only one main generating station, such main generating station and the main switchboard shall be situated in the same main fire zone. Where there is more than one main generating station, and only one main switchboard, such switchboard shall be situated in the same main fire zone as one of the generating stations. 43 Emergency source of electric power: ships of Classes I, II and II(A). 43.
(1)In every ship of Classes I, II and II (A) there shall be provided in a position above the bulkhead deck not forward of the collision bulkhead and outside the machinery casings a self-contained emergency source of electric power. The location of this self-contained emergency source in relation to the main source or sources of electric power shall be such as to ensure that a fire or other casualty to the machinery space will not interfere with the supply or distribution of emergency power.
(2)The emergency source of power required by the preceding paragraph shall be capable of operating simultaneously for a period of 36 hours, or for such shorter period as the Minister may permit in the case of any ship regularly engaged on voyages of short duration, the following services:— ( a ) the ship's emergency bilge pump, if it is electrically operated; ( b ) the ship's watertight doors, if they are electrically or electro-hydraulically operated, together with their indicators which show if the doors are open or closed, and the warning signals, if they are electrically operated; (
  1. c)the ship's emergency lights at every boat station on deck and overside, in all alleyways, stairways and exits, in the machinery space, in the control stations where radio, main navigating and central fire recording equipments are situated, and in the place where the emergency generator, if any, is situated; (
  2. d)the ship's navigation lights; (
  3. e)all communication equipment, fire detecting systems and signals which may be required in an emergency, if they are electrically operated from the ship's main generating sets; (
  4. f)the ship's sprinkler pump, if it is electrically operated; and (
  5. g)the ship's daylight signalling lamp, if it is operated by the ship's main source of electric power.
(3)The emergency source of electric power shall be either an accumulator (storage) battery capable of complying with the preceding paragraph without being recharged or suffering an excessive voltage drop, or a generator driven by internal combustion type machinery with an independent fuel supply and with efficient starting arrangements and the fuel provided for such machinery shall have a flashpoint of not less than 43°C.
(4)The emergency source of electric power shall be so arranged that it will operate efficiently when the ship is listed 22½ degrees and when the trim of the ship is 10 degrees from an even keel.
(5)(
  1. a)If the emergency source of electric power is an accumulator (storage) battery, the arrangements shall be such that the ship's emergency lighting system will come into operation automatically in the event of the failure of the main source of power for the ship's main lighting system. (
  2. b)If the emergency source of electric power is a generator, an accumulator (storage) battery shall be provided as a temporary source of electric power, so arranged as to come into operation automatically in the event of a failure of the main or emergency source of electric power, and of sufficient capacity to operate the ship's emergency lighting system continuously for half an hour and while such lighting system is in operation— (
  3. i)to close the ship's watertight doors if they are electrically operated, but not necessarily to close all such doors simultaneously; (
  4. ii)to operate the indicators, which show if the doors are open or closed, if such indicators are electrically operated; (iii) to operate the sound signals, which give warning that power operated watertight doors are about to close, if such sound signals are electrically operated; and (
  5. iv)to operate all communication equipment, fire detecting systems and signals which may be required in an emergency, if they are electrically operated from the ship's main generating sets. (
  6. c)Means shall be provided for the periodical testing of the emergency source of power and the temporary source of power, if provided, including the testing of automatic arrangements. (
  7. d)An indicator shall be provided in the machinery space, on the main switchboard or at some other suitable position to show when any accumulator (storage) battery fitted in accordance with this rule is being discharged. 44 Emergency source of electric power: ships of Class III. 44.
(1)In a ship of Class III which is provided with an emergency bilge pump in compliance with Rule 31
(2)of these Rules, being an electrically operated pump, there shall be provided in a position above the bulkhead deck outside the machinery casings a self-contained emergency source of electric power capable of operating the pump for a period of 24 hours.
(2)The emergency source of electric power may be either an accumulator (storage) battery capable of complying with the preceding paragraph, without being recharged or suffering an excessive voltage drop, or a generator driven by internal combustion type machinery with an independent fuel supply and with efficient starting arrangements and the fuel provided for such machinery shall have a flashpoint of not less than 43°C.
(3)The emergency source of electric power shall be so arranged that it will operate efficiently when the ship is listed to 22½ degrees and when the trim of the ship is 10 degrees from an even keel. 45 Emergency switchboards. 45. In every ship of Classes I, II, II(A), and III in which the provision of an emergency source of electric power is required by these Rules— (
  1. a)the emergency switchboard shall be situated as near as practicable to the emergency source of power; (
  2. b)if the emergency source of power is a generator, the emergency switchboard shall be situated in the same space as the generator unless the operation of the switchboard would thereby be impaired; (
  3. c)if the emergency source of power is a generator, an interconnecting feeder, adequately protected at each end, connecting the main and emergency switchboards shall be fitted; (
  4. d)no accumulator (storage) battery fitted in accordance with Rules 43 or 44 of these Rules shall be situated in the same space as the emergency switchboard. 46 Distribution systems. 46.
(1)In every ship to which this Part applies every main and emergency switchboard shall be so arranged as to give easy access to the back and the front thereof without danger to any person and shall be suitably guarded. A non-conducting mat or grating shall be provided at the back and front where necessary. No exposed parts which may have a voltage between conductors or to earth exceeding 250 volts direct current or 55 volts alternating current shall be installed on the face of any switchboard or control panel.
(2)Hull return shall not be used in any such ship for the power, heat and light distribution systems thereof.
(3)If in any such ship two or more generating sets may be in operation at the same time for maintaining the auxiliary services essential for the propulsion or safety of the ship, provision shall be made for the sets to operate in parallel and means shall be provided to trip automatically sufficient non-essential load when the total current exceeds the connected generator capacity.
(4)(
  1. a)In every such ship electric and electro-hydraulic steering gear shall be served by two circuits fed from the main switchboard, one of which may pass through the emergency switchboard, if one is provided. Each circuit shall have adequate capacity for supplying all the motors which are normally connected to it and which operate simultaneously and if transfer arrangements are provided in the steering gear room to permit either circuit to supply any motor or combination of motors, the capacity of each circuit shall be adequate for the most severe load condition. The circuits shall be separated as widely as is practicable throughout their length. (
  2. b)Short circuit protection only shall be provided for such circuits and motors. (
  3. c)Every such ship which is fitted with electric or electro-hydraulic steering gear shall be provided with indicators which will show when the power units of such steering gear are running. These indicators shall be situated in suitable positions on the navigating bridge and in the machinery space or the machinery control room.
(5)The electrical arrangements for any automatic sprinkler and fire alarm and fire detection system shall comply with the requirements specified in the Eleventh Schedule to the Merchant Shipping (Fire Appliances) (Post-1980 Ships) Rules, 1983 ( S.I. No. 303 of 1983 ).
(6)In every such ship to which these Rules apply distribution systems shall be so arranged that a fire in any main fire zone will not interfere with essential services in any other main fire zone. Main and emergency feeders passing through any main fire zone shall be separated as widely as is practicable both horizontally and vertically. 47 General electrical precautions. 47.
(1)(
  1. a)In every ship to which this Part applies all electrical equipment shall be so constructed and installed that there will be no danger of injury to any person handling it in a proper manner. Subject to the provisions of subparagraph (
  2. b)of this paragraph, where electrical equipment supplied as ship's equipment is to be operated at a voltage in excess of 55 volts, the exposed metal parts of such equipment which are not intended to have a voltage above that of earth, but which may have such a voltage under fault conditions, shall be earthed. (
  3. b)Exposed metal parts of portable electric lamps, tools and similar apparatus, supplied as ship's equipment to be operated at a voltage in excess of 55 volts shall be earthed through a conductor in the supply cable, unless by the use of double insulation or a suitable isolating transformer, protection at least as effective as earthing through a conductor is provided. When electric lamps, tools or other apparatus are used in damp spaces provision shall be made, so far as practicable, to ensure that the danger of electric shock is reduced to a minimum.
(2)Every electric cable in such a ship shall be of a flame retarding type. All metal sheaths and metal armour of any electric cable in use in such a ship shall be electrically continuous and shall be earthed. Every electric cable which is neither metal sheathed nor armoured shall, if installed where its failure might cause a fire or explosion, be otherwise effectively protected.
(3)Wiring in every such ship shall be supported in such a manner as to avoid chafing and other injury.
(4)In every such ship the joints in all electrical conductors shall be made only in junction or outlet boxes except in the case of low voltage communication circuits. All such junctions or outlet boxes shall be so constructed as to prevent the spread of fire therefrom.
(5)In every such ship lighting fittings shall be arranged to prevent rises in temperature which would be injurious to the electrical wiring thereof or which would result in a risk of fire in the surrounding material.
(6)Every electric space-heater forming part of the equipment of such a ship shall be fixed in position and shall be so constructed as to reduce the risk of fire to a minimum. No such heater shall be constructed with an element so exposed that clothing, curtains or other material can be scorched or set on fire by heat from the element.
(7)In every such ship every separate electrical circuit, other than a circuit which operates the ship's steering gear, shall be protected against overload and short circuit. There shall be clearly and permanently indicated on or near each overload protective device the current carrying capacity of the circuit which it protects and the rating or setting of the device.
(8)In every such ship all accumulator (storage) batteries shall be housed in boxes or compartments which are so constructed as to protect the batteries from damage and are so ventilated as to minimise the accumulation of explosive gas.
(9)In spaces where flammable mixtures are liable to collect, no electrical equipment shall be installed unless it is of a type which will not ignite the mixture concerned.
(10)In every such ship every lighting circuit in a bunker or hold shall be provided with an isolating switch outside the space. 48 Spare parts and tools.
  1. Every ship of Classes I, II and II(A) shall be provided with an adequate quantity of replacements for those parts of the ship's electrical equipment and installations which, having regard to the intended service of the ship, it would be essential for the safety of the ship and of persons on board to replace in the event of failure while the ship is at sea, together with such tools as are necessary for the fitting of these replacements. PART IVA ELECTRICAL EQUIPMENT AND INSTALLATIONS—EXISTING SHIPS. 49 Application of Part IVA.
  2. This Part applies to every existing ship to which these Rules apply. 50 General. 50.
(1)Every ship to which this Part applies shall comply with paragraph
(1)of Rule 41, Rule 42, 44 and 45, paragraphs
(1),
(2),
(3),
(4)and
(6)of Rule 46, Rule 47 and Rule 48 of these Rules.
(2)In every such ship, the electrical equipment and installations (including any electrical means of propulsion) shall be such that the ship and all persons on board are protected against electrical hazards and shall conform with Rules approved for the purposes of this Rule by the Minister.
(3)If in any such ship the power supply for an automatic sprinkler system, requiring not less than two sources of power supply for sea-water pumps, air compressors and automatic alarms, is electrical, such power supplies shall be taken from the main generating sets and from an emergency source of electric power. One supply shall be taken from the main switchboard and another from the emergency switchboard, by separate feeders reserved solely for that purpose. Such feeders shall be run to a change-over switch situated near to the sprinkler unit and the switch shall normally be kept closed to the feeder from the emergency switchboard. The change-over switch shall be clearly labelled and no other switch shall be permitted in these feeders. PART V FIRE PROTECTION: NEW SHIPS OF CLASSES I, II AND II(A) 51 Application of Part V. 51. This Part applies to new ships of Classes I, II and II(A) carrying more than 36 passengers. 52 Structure. 52.
(1)The hull, superstructure, structural bulkheads, decks and deckhouses shall be constructed of steel or other equivalent material, except that the crowns and casings of machinery spaces of Category A shall be constructed only of steel. Where any part of the structure is of aluminium alloy, the following requirements shall apply:— (
  1. a)The insulation of aluminium alloy components of "A" or "B" Class divisions, and supports of such divisions, shall be such that the temperature of the structural core does not rise more than 200°C above the ambient temperature at any time during a standard fire test of 60 minutes duration in the case of an "A" Class division and 30 minutes duration in the case of a "B" Class division. (
  2. b)The insulation of aluminium alloy components of columns, stanchions and other structural members required to support lifeboat and liferaft stowage, launching and embarkation areas, shall be such that the temperature rise limitation specified in subparagraph (
  3. a)of this Rule shall apply for 60 minutes duration. 53 Main vertical zones and horizontal zones. 53.
(1)The hull, superstructure and deckhouses of every ship to which this Part applies shall be subdivided by bulkheads consisting of "A" Class divisions into main vertical zones except in respect of special category spaces to which Rule 64 applies. The mean length of each zone on any one deck, above the bulkhead deck, shall not normally exceed 40 metres. Steps and recesses shall be kept to a minimum, but any which are necessary shall consist of "A" Class divisions. These divisions shall have insulation values in accordance with the tables at the end of Rule 55 of these Rules.
(2)Any portions of such divisions which extend above the bulkhead deck shall, whenever possible, be in line with watertight subdivision bulkheads situated immediately below the bulkhead deck, and shall extend from deck to deck and to the ship's shell and in the case of a deckhouse, to the external plating thereof.
(3)Where a main vertical zone is subdivided by horizontal "A" Class divisions into horizontal zones for the purpose of providing an appropriate barrier between sprinklered and non-sprinklered zones of the ship, the divisions shall extend between adjacent main vertical zone bulkheads and to the shell or exterior boundaries of the ship and shall have insulation and integrity values in accordance with Table 3 at the end of Rule 55 of these Rules.
(4)In ships designed for special purposes, such as car or train services, where the provisions of main vertical zone bulkheads would conflict with the purpose for which the ship is intended, the Minister may allow an equivalent means for controlling and limiting a fire to be substituted: Provided that in a ship with special category spaces, any such space shall comply with the applicable provisions of Rule 64 of these Rules and in so far as such compliance would be inconsistent with compliance with other requirements of this Part, the requirements of Rule 64 shall prevail. 54 Bulkheads within a main vertical zone. 54.
(1)Every bulkhead within the accommodation spaces or service spaces of every ship to which this Part applies, not being a bulkhead required by these Rules to consist of an "A" Class division, shall consist of a "B" Class or "C" Class division as required by the tables at the end of Rule 55 of these Rules. All such divisions may be faced with combustible materials in accordance with Rule 61 of these Rules.
(2)All corridor bulkheads where not required to be "A" Class shall be "B" Class divisions which shall extend from deck to deck except:— (
  1. a)when continuous "B" Class ceilings and/or linings are fitted on both sides of the bulkhead, the portion of the bulkhead behind the continuous ceiling or lining shall be of material which in thickness and composition meets the requirements of "B" Class divisions, but which is required to meet "B" Class fire integrity standards only so far as is reasonable and practicable in the opinion of the Minister; (
  2. b)in the case of a ship protected by an automatic sprinkler system complying with the Eleventh Schedule to the Merchant Shipping (Fire Appliances) (Post-1980 ships) Rules, 1983, the corridor bulkheads of "B" Class materials may terminate at a ceiling in the corridor, provided such a ceiling is of material which in thickness and composition meets the requirements of "B" Class divisions. Notwithstanding the requirements of Rule 55 of these Rules, such bulkheads and ceilings are required to meet "B" Class fire integrity standards only so far as is reasonable and practicable in the opinion of the Minister. All doors and frames in such bulkheads shall be of non-combustible materials and shall be constructed and erected so as to provide substantial fire resistance to the satisfaction of the Minister.
(3)Every bulkhead required to be a "B" Class division, except a corridor bulkhead, shall extend from deck to deck and to the shell or other boundaries unless continuous "B" Class ceilings and/or linings are fitted on both sides of the bulkhead, in which case the bulkhead may terminate at the continuous ceiling or lining. 55 Fire integrity of bulkheads and decks. 55.
(1)In addition to complying with the specific provisions for fire integrity of bulkheads and decks of these Rules, the minimum fire integrity and insulation standards of all bulkheads and decks shall be as prescribed in paragraphs
(2)to
(4)of this Rule and the tables at the end of this Rule.
(2)Where, due to any particular structural arrangement in the ship, there may be doubt in determining from the tables the minimum fire integrity and insulation standard of any division, such standard shall be determined to the satisfaction of the Minister.
(3)The following requirements shall govern application of the tables: (
  1. a)Table 1 shall apply to bulkheads bounding main vertical zones or horizontal zones. Table 2 shall apply to bulkheads not bounding either main vertical zones or horizontal zones. Table 3 shall apply to decks forming steps in main vertical zones or bounding horizontal zones. Table 4 shall apply to decks not forming steps in main vertical zones nor bounding horizontal zones. (
  2. b)For the purpose of determining the appropriate fire integrity and insulation standards to be applied to boundaries between adjacent spaces, such spaces are classified according to their fire risk as shown in Categories
(1)to
(14)below. Where the contents and use of a space are such that there may be doubt as to its classification for the purpose of this Rule, it shall be treated as a space within the relevant category having the most stringent boundary requirements. The number in parentheeses preceding each category refers to the applicable column or row numbers in the tables:
(1)control stations include: spaces containing emergency sources of power and lighting; wheelhouse and chartroom and other spaces housing main navigation equipment; spaces containing the ship's radio equipment; fire extinguishing installation rooms and fire control and recording stations; control room for propelling machinery when located outside the propelling machinery space; spaces containing centralized fire alarm equipment; spaces containing centralized emergency public address systems and equipment.
(2)stairways include interior stairways, lifts and escalators and enclosures thereto (other than those wholly contained within machinery spaces) for passengers and crew; a stairway which is enclosed at only one level shall be regarded as part of the space from which it is not separated by a fire door.
(3)corridors include passenger and crew space corridors and lobbies.
(4)lifeboat and liferaft handling and embarkation stations include open deck spaces and enclosed promenades forming lifeboat and liferaft embarkation and lowering stations.
(5)open deck spaces include: open deck spaces and enclosed promenades clear of lifeboat and liferaft embarkation and lowering stations; the space outside superstructures and deckhouses.
(6)accommodation spaces of minor fire risk include: cabins containing furniture and furnishings of restricted fire risk; public spaces containing furniture and furnishings of restricted fire risk and having a deck area of less than 50 square metres; offices and dispensaries containing furniture and furnishings of restricted fire risk.
(7)accommodation spaces of moderate fire risk include: spaces listed in Category
(6)but containing furniture and furnishings of other than restricted fire risk; public spaces containing furniture and furnishings of restricted fire risk and having a deck area of 50 square metres and greater; lockers and store rooms having a deck area of less than 4 square metres in which no flammable liquids are stowed; shops; motion picture projection and film storage rooms; laboratories in which no flammable liquids are stowed; pharmacies; drying rooms having a deck area of less than 4 square metres.
(8)accommodation spaces of greater fire risk include: public spaces containing furniture and furnishings of other than restricted fire risk and having a deck area of 50 square metres and greater; barber shops and beauty parlours.
(9)sanitary and similar spaces include: communal sanitary facilities, showers, baths,and water closets; laundry rooms having a deck area of less than 6 square metres; indoor swimming pool area; operating theatres; pantries containing no cooking appliances and not annexed to galleys. Private sanitary facilities shall be considered part of the accommodation space in which they are located.
(10)tanks, voids and auxiliary machinery spaces having little or no fire risk include: water tanks forming part of the ship's structure; voids and cofferdams; auxiliary machinery spaces which do not contain machinery having a pressure lubricated system and where storage of combustibles is prohibited, such as:— a ventilation and air-conditioning room; windlass room; steering gear room; stabilizer equipment room; electrical propulsion motor room; a room containing section switchboards and purely electrical equipment other than oil-filled electrical transformers (above 10 kVA); shaft and pipe tunnels; spaces for pumps and refrigeration machinery not using flammable liquids; closed trunks serving the spaces listed in this paragraph; other closed trunks such as pipe and cable trunks.
(11)auxiliary machinery spaces, cargo spaces, special category spaces, cargo and other oil tanks and other spaces of moderate fire risk include: cargo oil tanks; cargo holds, trunkways and hatchways; refrigerated chambers; oil fuel tanks where installed in a separate space with no machinery; shaft and pipe tunnels allowing storage of combustibles; auxiliary machinery spaces specified in Category
(10)which contain machinery having a pressure lubricated system or where storage of combustibles is permitted; oil fuel filling stations; spaces containing oil-filled electrical transformers (above 10 kVA); spaces containing turbine and reciprocating steam engine driven auxiliary generators and small internal comb

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