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
as Captain Mike Turner
Sally Field
as Celeste Whitman
Telly Savalas
as Captain Stefan Svevo
Peter Boyle
as Frank Mazzetti
Jack Warden
as Harold Meredith
Shirley Knight
as Hannah Meredith
Shirley Jones
as Nurse Gina Rowe
Karl Malden
as Wilbur Hubbard
Slim Pickens
as Tex
Veronica Hamel
as Suzanne Constantine
Angela Cartwright
as Theresa Mazzetti
Mark Harmon
as Larry Simpson
