16 



SAFETY OF LIFE AT SEA. APPLICATION OF SUBDIVISION 



Column A gives the maximum permissible values of the factor of subdivision 

 for the length of vessels given in columns B and C. 



Column B is applicable to vessels engaged in a mixed cargo and passenger 

 service. 



Column C is applicable to vessels primarily engaged in the transportation of 

 passengers. 



4. For a given length, the value of the factor of subdivision appropriate to a 

 vessel between the two extreme limits will be between the values of the factors de- 

 termined by the two curves before mentioned, and will be automatically fixed by a 

 "criterion of service" which is to form the subject of further study. 



Article IX. 



1. When the factor of subdivision is equal to or less than .5, it may be dou- 

 bled in order to give at any point of the vessel's length the total length of two 

 adjacent compartments; but, in that case, the length of the shorter compartment 

 of any pair shall not be less than one-quarter of the total length so obtained. If one 

 of the two adjacent compartments is situated inside the machinery space and the 

 second is situated outside the machinery space, and the average permeability of the 

 portion of the ship in which the second is situated differs from 80 per cent, the 

 length of the pair of compartments shall be adjusted to the proper value by apply- 

 ing a suitable correction. 



2. In no case whatever shall the length of any watertight compartment ex- 

 ceed 92 feet. 



3. When the factor of subdivision applicable to any vessel is less than .84, but 

 more than .5, the combined length of the two foremost compartments shall not ex- 

 ceed the floodable length at the extreme forward end, provided also that the length 

 of the second compartment is not greater than that permissible by Article VIII 

 above, and not less than 10 feet. 



4. When the length of the vessel is more than 699 feet, but less than 823 feet, 

 the floodable length at the forward end of the vessel shall be at least 20 per cent 



