308 



5. Where hot pursuit is effected by an aircraft : 



(a) The provisions of paragraph 1 to 3 of this article shall 

 apply mutatis mutandis; 



(b) The aircraft giving the order to stop must itself actively 

 pursue the ship until a ship or aircraft of the coastal State, sum- 

 moned by the aircraft, arrives to take over the pursuit, unless the 

 aircraft is itself able to arrest the ship. It does not suffice to 

 justify an arrest on the high seas that the ship was merely sighted 

 by the aircraft as an offender or suspected offender, if it was not 

 both ordered to stop and pursued by the aircraft itself or other 

 aircraft or ships which continue the pursuit without interruption. 



6. The release of a ship arrested within the jurisdiction of a State 

 and escorted to a port of that State for the purposes of an enquiry be- 

 fore the competent authorities may not be claimed solely on the 

 ground that the ship, in the course of its voyage, was escorted across 

 a portion of the high seas, if the circumstances rendered this necessary. 



7. "WTiere a ship has been stopped or arrested on the high seas in 

 circumstances which do not justify the exercise of the right of hot 

 pursuit, it shall be compensated for any loss or damage that may have 

 been thereby sustained. 



Article 24 



Every State shall draw up regulations to prevent pollution of the 

 seas by the discharge of oil from ships or pipelines or resulting from 

 the exploitation and exploration of the seabed and its subsoil, taking 

 account of existing treaty provisions on the subject. 



Article 25 



1. Every State shall take measures to prevent pollution of the seas 

 from the dumping of radioactive waste, taking into account any 

 standards and regulations which may be formulated by the competent 

 international organizations. 



2. All States shall co-operate with the competent international orga- 

 nizations in taking measures for the prevention of pollution of the 

 seas or air space above, resulting from any activities with radio-active 

 materials or other harmful agents. 



Article 26 



1. All States shall be entitled to lay submarine cables and pipelines 

 on the bed of the high seas. 



2. Subject to its right to take reasonable measures for the explora- 

 tion of the continental shelf and the exploitation of its natural re- 

 sources, the coastal State may not impede the laying or maintenance 

 of such cables or pipelines, 



3. When laying such cables or pipelines the State in question shall 

 pay due regard to cables or pipelines already in position on the seabed. 

 In particular, fK)ssibilities of repairing existing cables or pipelines 

 shall not be prejudiced. 



