translate English to French: Both the 1958 Convention on the High Seas and the 1982 United Nations Convention on the Law of the Sea provide that the State whose flag a ship flies has responsibility under international law for administrative, technical and social matters on that ship.
Aussi bien la Convention de 1958 sur la haute mer que la Convention des Nations Unies sur le droit de la mer de 1982 stipulent qu'en vertu du droit international l'État du pavillon exerce les responsabilités administrative, technique et sociale relatives aux navires battant son pavillon.