442 



sions shall (unless the context otherwise requires) have the meanings 

 hereby respectively assigned to them, that is to say: 



'The Bureau' has the meaning assigned to it by Article XXI; 



'Discharge' in relation to oil or to oily mixture means any dis- 

 charge or escape howsoever caused; 



'Heavy diesel oil' means marine diesel oil, other than those dis- 

 tillates of which more than 50 per cent by volume distils at a 

 temperature not exceeding 340° C. when tested by A.S.T.M. 

 Standard Method D.86/59; 



'Mile' means a nautical mile of 6,080 feet or 1,852 metres; 



'Oil' means crude oil, fuel oU, heavy diesel oil and lubricating oil, 

 and 'oily' shall be construed accordingly; 



'Oily mixture' means a mixture with an oil content of 100 parts 

 or more in 1,000,000 parts of the mixture; 



'Organization' means the Inter-Governmental Maritime Con- 

 sultative Organization; 



'Ship' means any sea-going vessel of any type whatsoever, 

 including floating craft, whether self-propelled or towed by 

 another vessel, making a sea voyage; and 'tanker' means a 

 ship in which the greater part of the cargo space is constructed 

 or adapted for the carriage of liquid cargoes in bulk and 

 which is not, for the time being, carrying a cargo other than 

 oU in that part of its cargo space. 



(2) For the purposes of the present Convention, the territories of a 

 Contracting Government mean the territory of the country of which 

 it is the Government and any other territory for the international 

 relations of which it is responsible and to which the Convention shall 

 have been extended under Article XVIII. 



2. The existing text of Article II of the Convention is replaced by the 

 following : 



Article II 



(1) The present Convention shall apply to ships registered in any 

 of the territories of a Contracting Government and to unregistered 

 ships having the nationality of a Contracting Party, except: 



(a) tankers of under 150 tons gross tonnage and other ships of 

 under 500 tons gross tonnage, provided that each Contracting 

 Government will take the necessary steps, so far as is reason- 



