C24 



SAFETY OF LIFK AT SEA 



M = the volume of the machinery space, as defined in Regulation 2 of 

 this Chapter; with the addition thereto of the volume of any 

 permanent oil fuel bunkers which may be situated above the 

 inner bottom and before or abaft the machinery space; 



P=the whole volume of the passenger spaces below the margin line, 

 as defined in Regulation 2 of this Chapter; 



V=the whole volume of the ship below the margin line; 

 P,=KN where: — 



N= number of passengers for which the ship is to be certified, 

 and 



K has the following values: — 



Value of K 



Length in feet and volumes in cubic feet •6L 



Length in metres and volumes in cubic metres ... •056L 



Where the value of KN is greater than the sum of P and the whole volume 

 of the actual passenger spaces above the margin line, the figure to be taken 

 as Pj is that sum or } KN, whichever is the greater. 



When Pj is greater than P — 



M + 2P 

 C.=12^^^^ (III. 



and in other cases — 



C=72^ (IV, 



For ships not having a continuous bulkhead deck the volumes are to be 

 taken up to the actual margin lines used in determining the floodable lengths. 



(d) Rules for Subdivision of Ships other than those covered by para- 

 i^raph (e) of this Regulation 



(i) The subdivision abaft the fore peak of ships 430 feet (or 131 metres) 

 in length and upwards having a criterion numeral of 23 or less shall be 

 governed by the factor A given by formula (I); of those having a criterion 

 numeral of 123 or more by the factor B given by formula (II); and of those 

 having a criterion numeral between 23 and 123 by the factor F obtained by 

 linear interpolation between the factors A and B, using the formula: — 



^ ^ (A-BXC -23) 



^=^ Too ^> 



Nevertheless, where the criterion numeral is equal to 45 or more and 

 simultaneously the computed factor of subdivision as given by formula (V) 

 is -65 or less, but more than -50, the subdivision abaft the forepeak shall be 

 governed by the factor -50. 



Ch. 2 



