Beyond the Poseidon Adventure (1979)
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. gold, based on novel or book, plutonium, ocean, 1970s, wave, natural disaster, rescue mission, ocean liner, sequel, disaster, capsized ship, tidal wave, disaster movie
ETC.
