6.—: Authorities of Necessity.

Of the master of a ship. The master of a merchant ship has by reason of necessity the right of using force to preserve order and discipline for the safety of the vessel and the persons and property on board. Thus, if he has reasonable cause to believe that any sailor or passenger is about to raise a mutiny, he may arrest and confine him. The master may even be justified in a case of extreme danger in inflicting punishment without any form of inquiry. But “in all cases which will admit of the delay proper for inquiry, due inquiry should precede the act of punishment; and . . . . the party charged should have the benefit of that rule of universal justice, of being heard in his own defence”. In fact, when the immediate emergency of providing for the safety and discipline of the ship is past, the master’s authority becomes a quasi-judicial one. There are conceivable circumstances in which the leader of a party on land, such as an Alpine expedition, might be justified on the same principle in exercising compulsion to assure the common safety of the party. But such a case, though not impossible, is not likely to occur for decision.