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.
Michael Caine
Captain Mike Turner
Sally Field
Celeste Whitman
Telly Savalas
Captain Stefan Svevo
Peter Boyle
Frank Mazzetti
Jack Warden
Harold Meredith
Shirley Knight
Hannah Meredith
Shirley Jones
Nurse Gina Rowe
Karl Malden
Wilbur Hubbard
