This is not a great movie, but it has some great shots of post World War I-era four-stacker destroyers, submarines, and three-masted wooden sailing ships that play combatant. A young Ginger Rogers is the love interest in a fairly hokey plot but I am glad that I watched it. The future Hopalong Cassidy plays the hero as a recalled to active duty Chief Petty Officer. Based upon a book by an active duty Navy Commander.