marine-rescue doctrine.The rule that when a person on a ship goes overboard, the ship must use all reasonable means to retrieve the person from the water if the person can be seen, and, if the person cannot be seen, must search for the person as long as it is reasonably possible that the person is still alive. [Cases: Seamen 29(1). C.J.S. Seamen §§ 33, 148–149, 151–152, 154–163, 167.]

[Blacks Law 8th]