C42 SAFETY OF LIFE AT SEA 



(0 (i) All inlets and discharges in the shell plating shall be fitted wit 

 eflBcient and accessible arrangements 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 any 

 other application where the deterioration of such pipes in the event of fire 

 would give rise to danger of flooding. 



(ii) (1) Except as provided in sub-paragraph (iii) of this paragraph, 

 each separate discharge led through the shell plating from 

 spaces below the margin line shall be provided either with one 

 automatic non-return valve fitted with a positive means of 

 closing it from above the bulkhead deck, or, alternatively, with 

 two automatic non-return valves without such means, the upper 

 of which is so situated above the deepest subdivision loadline 

 as to be always accessible for examination under service con- 

 ditions, and is of a type which is normally closed. 



(2) Where a valve with positive means of closing is fitted, the 

 operating position above the bulkhead deck shall always be 

 readily accessible, and means shall be provided for indicating 

 whether the valve is open or closed. 



(iii) Main and auxiliary sea inlets and discharges in connection with 

 machinery shall be fitted with readily accessible cocks or valves between the 

 pipes and shell plating or between the pipes and fabricated boxes attached 

 to the shell plating. 



(y) (i) Gangway, cargo and coaling ports fitted below the margin line 

 shall be of sufficient strength. They shall be effectively closed and secured 

 watertight before the ship leaves port, and shall be kept closed during 

 navigation. 



(ii) Such ports shall be in no case fitted so as to have their lowest 

 point below the deepest subdivision loadline. 



(k) (i) The inboard opening of each ash-shoot, rubbish-shoot, &c. shall 

 be fitted with an efficient cover. 



(ii) If the inboard opening is situated below the margin line, the cover 

 shall be watertight, and in addition an automatic non-return valve shall be 

 fitted in the shoot in an easily accessible position above the deepest subdivision 

 loadline. When the shoot is not in use both the cover and the valve shall be 

 kept closed and secured. 



Regulation 15 



Construction and Initial Tests of Watertight Doors, Sidescuttles, &c. 



(a) (i) The design, materials and construction of all watertight doors, 

 sidescuttles, gangway, cargo and coaling ports, valves, pipes, ash-shoots 

 and rubbish-shoots referred to in these Regulations shall be to the satis- 

 faction of the Administration. 



Ch. 2 



