7.—(1) In every ship of Class I there shall be provided for the protection of any machinery space of Category A at least one of the following fixed fire-extinguishing systems—
(a)a fixed pressure water-spraying system complying with the requirements of Schedule 2 in Merchant Shipping Notice MSN 1666;
(b)a fixed gas fire-extinguishing system complying with the requirements of Schedule 4 in Merchant Shipping Notice MSN 1666; or
(c)a fixed high-expansion foam fire-extinguishing system complying with the requirements of Schedule 8 in Merchant Shipping Notice MSN 1666.
(2) If the engine and boiler rooms are not entirely separated from each other by a bulkhead or if fuel oil can drain from the boiler room into the engine room, the combined engine and boiler rooms shall, for the purpose of this regulation, be regarded as a single space.
(3) In addition to the requirements of paragraph (1) there shall be provided—
(a)in each boiler room one or more foam fire extinguishers each of at least 135 litres capacity or carbon dioxide fire extinguishers each of at least 45 kilogrammes capacity placed in such positions as to be readily accessible in the event of fire and sufficient in number to enable foam or carbon dioxide to be directed on to any part of the boiler room and spaces containing any part of the oil fuel installation;
(b)in each boiler room at least one portable foam-applicator unit complying with Schedule 6 in Merchant Shipping Notice MSN 1665;
(c)in each firing space and in each space which contains any part of any oil fuel installation at least two portable fire extinguishers suitable for extinguishing oil fires;
(d)in each firing space a receptacle containing at least 0.3 cubic metre of sand or other dry material suitable for extinguishing oil fires together with a scoop for its distribution or, alternatively, an additional portable fire extinguisher suitable for extinguishing oil fires.
(4) In addition to the requirements of paragraph (1) there shall be provided in any space containing internal combustion type machinery—
(a)one or more foam fire extinguishers of at least 45 litres or carbon dioxide extinguishers of at least 16 kilogrammes capacity; the extinguishers shall be sited so as to be readily accessible in the event of fire and they shall be sufficient in number to enable foam or carbon dioxide to be directed on to any part of the fuel and lubricating oil pressure systems, gearing and other areas of high fire risk;
(b)at least one portable foam-applicator unit complying with the requirements of Schedule 6 in Merchant Shipping Notice MSN 1665;
(c)portable fire extinguishers suitable for extinguishing oil fires sufficient in number to ensure that at least one extinguisher is not more than 10 metres walking distance from any position within the space: provided that there shall be not less than two such extinguishers; and
(d)in passenger ships carrying more than 36 passengers each machinery space of Category A shall be provided with at least two suitable water-fog applicators.