SAFETY OF LIFE AT SEA ^°7 



(iii) The Administration may exempt from the requirements of sub- 

 paragraphs (i) and (ii) of this paragraph the cargo holds of any ship (other 

 than the tanks of a tanker) — 



(1) if they are provided with steel hatch covers and effective means of 



closing all ventilators and other openings leading to the holds; 



(2) if the ship is constructed and intended solely for carrying such cargoes 



as ore, coal or grain; 



(3) where it is shown to the satisfaction of the Administration that the 



ship is engaged on voyages of such short duration that it would be 

 unreasonable to apply the requirement. 



(iv) Every cargo ship in addition to complying with the requirements of 

 this Regulation shall, while carrying explosives of such nature or in such 

 quantity as are not permitted to be carried in passenger ships under 

 Regulation 8 of Chapter VII of these Regulations comply with the following 

 requirements: — 



(i) Steam shall not be used for fire smothering purposes in any 

 compartment containing explosives. For the purposes of this 

 sub-paragraph, " compartment " means all spaces contained 

 between two adjacent permanent bulkheads and includes the lower 

 hold and all cargo spaces above it. The whole of any shelter 

 deck space not subdivided by steel bulkheads the openings of 

 which can be closed by steel closing plates shall, for the purposes 

 of this sub-paragraph, be considered as a compartment. Where 

 steel bulkheads with openings closed by steel closing plates are 

 fitted, the enclosed spaces in the shelter deck may be considered as 

 part of the compartment or compartments below. 



(2) In addition, in each compartment containing explosives and in 

 adjacent cargo compartments, there shall be provided a smoke or 

 fire detection system in each cargo space. 



(g) Fire Extinguishing Appliances in Boiler Rooms, &c. 



Where main or auxiliary oil fired boilers are situated, or in spaces 

 containing oil fuel units or settling tanks, a cargo ship of 1,000 tons gross 

 tonnage and upwards shall be provided with the following arrangements : — 



(i) There shall be any one o*" the following fixed fire extinguishing 

 installations : — 



(1) A pressure water spraying system complying with Regulation 62 



of this Chapter; 



(2) A fire smothering gas installation complying with Regulation 58 



of this Chapter; 



Ch. 2 



