When Lt. John Harkness is assigned as the new skipper of a submarine chaser equipped with an experimental steam engine, he hopes that the U.S.S. Teakettle's veterans will afford him enough help to accomplish the ship's goals. Unfortunately, he finds the crew and its officers share his novice status or only have experience in diesel engines.
Gary Cooper
as Lt. John W. Harkness
Jane Greer
as Ellie C. Harkness
Millard Mitchell
as George Larrabee
Eddie Albert
as Lt. Bill Barron
John McIntire
as Cmdr. W. R. Reynolds
Ray Collins
as Rear Adm. L. C. Tennant
Harry von Zell
as Capt. 'Danny' Eliot
Jack Webb
as Ens. Anthony 'Tony' Barbo
Richard Erdman
as Ens. Chuck Dorrance
Harvey Lembeck
as Norelli
Henry Slate
as Chief Engineer Ryan
Ed Begley
as Post Commander
