RULES ADOPTED AT INTERNATIONAL CONFERENCE. 17 



of the vessel's length; and the vessel, forward of a bulkhead placed either at the 

 distance of the actual floodable length abaft the stem or not nearer to the stem than 

 20 per cent of the vessel's length, shall be divided into at least three compartments. 



5. When the length of the vessel is equal to or greater than 823 feet the same 

 method shall be adopted, but the floodable length shall be at least 28 per cent and 

 the number of compartments at least four. 



6. A bulkhead may be recessed transversely, provided the sides of the recess 

 are at a sufificient distance from the sides of the vessel. 



Vertical steps are inadmissible in the main transverse watertight bulkheads of 

 vessels to which the subdivision rules of Article VIII apply where the factor of sub- 

 division is greater than .5, unless such arrangements are made by additional subdi- 

 vision as shall maintain the same measure of safety as that secured by bulkheads 

 without steps. The total length of the steps in any bulkhead shall not exceed 2 per 

 cent of the vessel's length, plus 10 feet. 



7. The existence of recesses or steps in a bulkhead shall in no case affect the 

 permissible volumes of the compartments adjacent to such bulkhead, as determined 

 by this and the preceding article. 



Article X. 



If the degree of safety of a vessel is greater than that prescribed by Articles 

 VIII and IX above, and if the owner requests that this fact be recorded on the 

 Safety Certificate, in accordance with Article 17 (paragraph 4) of the Conven- 

 tion, this request shall be accompanied with all the data necessary to justify this 

 claim. 



In such case, the record shall state the fact that the subdivision is equal or 

 superior to that provided for a vessel of equal length in column C of the table in 

 Article VIII, with an additional statement giving the length of the vessel in column 

 C whose factor of subdivision according to the rules would be exactly equal to that 

 employed in determining the subdivision of the vessel in question. 



Values of length and factors for lengths not specifically stated in columns C 

 and A, respectively, of the table in Article VIII shall be obtained by interpolation. 



Article XI. — Peak and Machinery Space Bulkheads. 



Vessels shall be fitted with a forepeak bulkhead to extend to the bulkhead 

 deck, and to the weather deck in vessels having continuous superstructures. This 

 bulkhead shall be placed at a distance of not less than 5 per cent of the vessel's length 

 from the stem at the load waterline. 



An afterpeak bulkhead and bulkheads dividing the machinery space from the 

 cargo and the passenger spaces shall also be fitted and carried up to the bulkhead 

 deck. The afterpeak bulkhead may, however, be stopped below the bulkhead deck, 

 provided that it shall at least be carried to the first deck above the load waterline. 



