In the midst of World War II, the battle under the sea rages and the Nazis have the upper hand as the Allies are unable to crack their war codes. However, after a wrecked U-boat sends out an SOS signal, the Allies realise this is their chance to seize the 'enigma coding machine'.
as Lt. Andrew Tyler
as Lt. Cmdr. Mike Dahlgren
as CPO Henry Klough
as Lt. Pete Emmett
as Maj. Matthew Coonen
as Capt. Lt. Gunther Wassner
as Lt. Hirsch
as Bill Wentz
as Ted Trigger Fitzgerald
as Ronald Rabbit Parker
as Steward Eddie Carson
as Seaman Anthony Mazzola
as Seaman Charles 'Tank' Clemens
as Seaman Herb Griggs
as Ens. Keith Larson
as Mrs. Dahlgren
as Prudence Dahlgren
as Louise Dahlgren
as Adm. Duke
as Ensign
as German Chief Hans
as Lt. Kohn
as German E-Chief
as German Hydrophone Operator
as German Planesman
as German Engineer
as German Lookout
as German Bosun
as British Seaman
