562 



years after the date of entry into force of the present Convention, 

 to comply with the provisions of this Regulation if such a tanker falls 

 into either of the following categories : 



(a) a tanker, the delivery of which is after 1 January 1977; or 



(b) a tanker to which both the following conditions apply: 

 (i) delivery is not later than 1 January 1977 and 



(ii) the building contract is placed after 1 January 1974, 

 or in cases where no building contract has previously been 

 placed, the keel is laid or the tanker is at a similar stage of 

 construction after 30 June 1974. 



(2) Cargo tanks of oil tankers shall be of such size and arrange- 

 ments that the hypothetical outflow Oc or Os calculated in accordance 

 with the provisions of Regulation 23 of this Annex anywhere in the 

 length of the ship does not exceed 30,000 cubic metres or 4:00^^/DW, 

 whichever is the greater, but subject to a mamimum of 40,000 cubic 

 metres. 



(3) The volume of any one wing cargo oil tank of an oil tanker shall 

 not exceed seventy-five per cent of the limits of the hypothetical oil 

 outflow referred to in paragraph (2) of this Regulation. The volume 

 of any one centre cargo oil tank shall not exceed 50,000 cubic metres. 

 However in segregated ballast oil tankers as defined in Regulation 13 

 of this Annex, the permitted volume of a wing cargo oil tank situated 

 between two segregated ballast tanks, each exceeding Ic in length, may 

 be increased to the maximum limit of hypothetical oil outflow pro- 

 vided that the width of the wing tanks exceeds tc. 



(4) The length of each cargo tank shall not exceed 10 metres or one 

 of the following values, whichever is the greater : 



(a) where no longitudinal bulkhead is provided: 



O.IL ' 



(b) where a longitudinal bulkhead is provided at the centreline 

 only : 



0.15L 



(c) where two or more longitudinal bulkheads are provided : 



(i) for wing tanks : 



0.2L 

 (ii) for centre tanks : 



(1) if — is equal to or greater than 1/5: 



B 



0.2L 



(2) if — is less than 1/5 : 



B 



where no centreline longitudinal bulkhead is pro- 

 vided : 



bi 



(0.5— f-0.1)L 

 B 



where a centreline longitudinal bulkhead is pro- 

 vided : 



bi 

 (0.25— +0.15) L 

 B 



