Fifty Fathoms Deep 1931

Directed by Roy William Neill

In this high-seas adventure, a woman creates a great rift between old friends: an experienced older diver, and his younger protege. They become enemies when a gold-digger marries the latter. She soon leaves him in favor of a wealthy yachtsman. She is aboard his boat when an accident occurs. The two divers must salvage the costly boat before it sinks.