Boomerang

Crevalle (SS-291) During one of its war patrols, the submarine USS Crevalle is forced to the bottom by depth charges. Seriously damaged, it lies quietly on the ocean floor, hoping to avoid detection. During the nerve-wracking hours of waiting, one man's true personality is revealed to his shipmates. Instead of the cringing cowardice with which some of the crew members had tagged him, he displays a kind of self-sacrificing heroism which is the true mark of a U.S. submariner.