428 



Desiring to take action by common agreement to prevent pollution 

 of the sea by oil discharged from ships, and considering that this end 

 may best be achieved by the conclusion of a Convention, 



Have accordingly appointed the undersigned plenipotentiaries, 

 who, having communicated their full powers, found in good and due 

 form, have agreed as follows : 



Article I 



(1) For the purposes of the present Convention, the following ex- 

 pressions shall (unless the context otherwise requires, have the mean- 

 ings 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 an oily mixture means any 

 discharge or escape howsoever caused ; 



"Heavy diesel oil" means marine diesel oil, other than those 

 distillates 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.158/53 ; 



"Mile" means a nautical mile of 6080 feet or 1852 metres; 



"Oil" means crude oil, fuel oil, heavy diesel oil and lubricating 

 oil, and "oily" shall be construed accordingly. 



(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 rela- 

 tions of which the Government is responsible and to which the Con- 

 vention shall have been extended under Article XVIII. 



Article II 



The present Convention shall apply to sea-going ships registered in 

 any of the territories of a Contracting Government, except 

 (i) ships for the time being used as naval auxiliaries; 

 ( ii ) ships of under 500 tons gross tonnage ; 

 (iii) ships for the time being engaged in the whaling industry ; 

 (iv) ships for the time being navigating the Great Lakes of 

 North America and their connecting and tributary waters as far 

 east as the lower exit of the Lachine Canal at Montreal in the 

 Province of Quebec, Canada. 



Article III 



(1) Subject to the provisions of Articles IV and V, the dischar^ 

 from any tanker, being a ship to which the Convention applies, within 

 any of the prohiDite4 zones referred to in Annex A to the Convention 

 in relation to tankers of — 



(a) oil; 



(b) any oily mixture the oil in which fouls the surface of the 

 seas, shall be prohibited. 



