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 Article 11 



1. In the event of a collison or of any other incident of navigation 

 concerning a ship on the high seas, involving the penal or disciplinary 

 responsibility of the master or of any other person in the service of the 

 ship, no penal or disciplinary proceedings may be instituted against 

 such persons except before the judicial or administrative authorities 

 either of the flag State or of the State of which such person is a na- 

 tional. 



2. In disciplinary matters, the State which has issued a masters 

 certificate or a certificate of competence or licence shall alone be com- 

 petent, after due legal process, to pronounce the withdrawal of such 

 certificates, even if the holder is not a national of the State which 

 issued them. 



3. No arrest or detention of the ship, even as a measure of investi- 



§ation, shall be ordered by any authorities other than those of the flag 

 tate. 



Article 12 



1. Every State shall require the master of a ship sailing under its 

 flag, in so far as he can do so without serious danger to the ship, the 

 crew or the passengers, 



(a) To render assistance to any person found at sea in danger 

 of being lost; 



(b) To proceed with all possible speed to the rescue of persons 

 in distress if informed of their need of assistance, in so far as 

 such action may reasonably be expected of him ; 



(c) After a collision, to render assistance to the other ship, her 

 crew and her passengers and, where possible, to inform the other 

 ship of the name of his own ship, her port of registry and the 

 nearest port at which she will call. 



2. Every coastal State shall promote the establishment and main- 

 tenance 01 an adequate and effective search and rescue service regard- 

 ing safety on and over the sea and — where circumstances so require — 

 by way of mutual regional arrangements co-operate with neighbouring 

 States for this purpose. 



Article 13 



Every State shall adopt effective measures to prevent and punish 

 the transport of slaves in ships authorized to fly its flag, and to prevent 

 the unlawful use of its flag for that purpose. Any slave taking refuge 

 on board any ship, whatever its flag, shall ipso facto be free. 



Article 14 



All States shall co-operate to the fullest possible extent in the re- 

 pression of piracy on the high seas or in any other place outside the 

 jurisdiction of any State. 



Article 15 



Piracy consists of any of the following acts : 



(1) Any illegal acts of violence, detention or any act of dep- 

 redation, commited for private ends by the crew or the passen- 

 gers of a private ship or a private aircraft, and directed : 



(a) On the high seas, against another shij) or aircraft, or 

 against persons or property on board such ship or aircrait ; 



