166. Obligations of states in respect of the high seas.

The freedom of the high seas must be exercised by all states with due regard for the interests of other states in their exercise of the freedom of the high seas1. There is also a duty to save lives in peril at sea2.

Every state must adopt effective measures to prevent and punish the transport of slaves in vessels flying its flag and the unlawful use of its flag for that purpose3. It must co-operate to the fullest possible extent in the repression of piracy4. Every state must effectively exercise its jurisdiction and control in administrative, technical and social matters