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After carrier pilot Lt Bingham is rescued at sea by a submarine when he crashes, he applies for submarine duty. During training he competes with Commander Heywood for the affection of Navy nurse Lt Susan Peabody. Heywood gets a new sub command at the outbreak of the Korean war and Bingham is assigned to his sub.
as Bob Bingham
as Susan Peabody
as Tom Graham
as Oliver J. Peabody
as Lt. Dore Gates
as Cmdr. Heywood
as Instructor
as Skipper
as Psychiatrist
as Charles Hedley
as Submariner