2.1 Collision 



2.2 Stranding 



468 



Oo==i:W,+^K,C, (1) 



0,=^l/SiT,ZiW,+T>ZiOi) (2) 



Where : 



1^^= volume of a wing tank in cubic metres breached by the damage 



assumed in Section 1 ; Wt for a clean ballast tank may be taken 



e(j[ual to zero, 

 Ci= volume of a centre tank in cubic metres breached by the damage 



assumed in Section 1 ; Ci for a clean ballast tank ma}' be taken 



equal to zero, 



Ki=l—j-'> when bi is equal to or greater than /«, Kt shall be taken 



equal to zero, 



Zt=l——} when hi is equal to or greater than v,, Zi shall be taken 



equal to zero, 

 6i= width of wing tank in metres under consideration, 

 /i<==minimum depth of the double bottom in metres \inder consider- 

 ation; where no double bottom is fitted, hi shall be taken equal 

 to zero, 

 wing tank = any tank adjacent to the side shell i)lating, 

 centre tank = any tank inboard a longitudinal bulkhead. 



2.3 Special requirements 



2.3.1 If a void space or clean water ballast tank of a length less 

 than Ic as defined in 1.1 is located between wing oil tanks, Oe in 

 formula (1) nuiy be calculated on the basis of volume Wi being the 

 actual volume of one such tank (where they are of equal capacity) 

 or the smaller of the two tanks (if they difl'er in capacity) adjacent 

 to such space, multiplied by Si as defined below and tnking for all 

 other wing tanks involved in such a collision the value of the actual 

 full volume. 



Si=l-lc 



Whore: /(.^length in metres of void space or clean ballast tank 

 under consideration. 



2.3.2(a) Credit shall only be given in respect of double bottom 

 tanks wliich are either empty or carrying clean water when cargo is 

 carried in the tiinks above. 



(b) Where the double bottom does not extend for the full length 

 and \vi(lth of the tank involved, the double bottom is considered non- 

 existent and the volume of the tanks above the area of the stranding 

 damage shall be included hi formula (2) even if the tank is not con- 

 sidered breached because of the installation of such a partial double 

 bottom. 



2.3.2(c) Suction wells ma}'^ bo neglected in the determination of 

 the value hi provided such wells are not excessive in area and extend 

 below the tank for a mininnmi distance and in no case more than 

 half the height of the double bottom. If the depth of such a well 



