121 



4- The right of hot pursuit may be exer- 

 cised only by warships or military aircraft, 

 or other ships or aircraft on government 

 service specially authorized to that effect. 



5. Where hot pursuit is effected by an 

 aircraft: 



(a) The provisions of paragraphs i 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, 

 summoned 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 

 inquiry before 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. Where 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 pre- 

 vent pollution of the seas from the dumping 

 of radio-active waste, taking into account 

 any standards and regulations which may 

 be formulated by the competent interna- 

 tional organizations. 



2. All States shall co-operate with the 

 competent international organizations in 

 taking measures for the prevention of pol- 

 lution of the seas or air space above, resulting 

 from any activities with radio-active mate- 

 rials or other harmful agents. 



Article 26 



1. All States shall be entitled to lay sub- 

 marine cables and pipelines on the bed of 

 the high seas. 



2. Subject to its right to take reasonable 

 measures for the exploration of the conti- 

 nental shelf and the exploitation of its nat- 

 ural resources, 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, possibilities of repair- 

 ing existing cables or pipelines shall not be 

 prejudiced. 



Article 27 



Every State shall take the necessary legis- 

 lative measures to provide that the breaking 

 or injury by a ship flying its flag or by a 

 person subject to its jurisdiction of a sub- 

 marine cable beneath the high seas done 

 wilfully or through culpable negligence, in 

 such a manner as to be liable to interrupt 

 or obstruct telegraphic or telephonic com- 

 munications, and similarly the breaking or 

 injury of a submarine pipeline or high- 

 voltage power cable shall be a punishable 

 offense. This provision shall not apply to 

 any break or injury caused by persons who 

 acted merely with the legitimate object of 



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