After "The Poseidon Adventure", in which the ship got flipped over by a tidal wave, the ship drifts bottom-up in the sea. While the passengers are still on board waiting to be rescued, two rivaling salvage parties enter the ship on search for money, gold and a small amount of plutonium.
Mark Harmon
Larry SimpsonSally Field
Celeste WhitmanMichael Caine
Captain Mike TurnerJack Warden
Harold MeredithPeter Boyle
Frank MazzettiAngela Cartwright
Theresa MazzettiVeronica Hamel
Suzanne ConstantineKarl Malden
Wilbur Hubbard