Carl Esmond - U-Boat Captain 역

Clem Bevans - 'Cap' Finch 역

John Qualen - Milo 역

Regis Toomey - Ives 역

Henry Victor - German U-Boat Officer 역

Addison Richards - Admiral Ross 역

Hans Joby - U-Boat Petty Officer 역

Henry Hunter - Ensign Dyer 역

Jonathan Hale - Admiral Girard 역

Leon Ames - Recruiting Officer (uncredited) 역

Arthur Belasco - Fisherman (uncredited) 역

Joseph E. Bernard - Fisherman (uncredited) 역

Wade Boteler - Recruiting Officer (uncredited) 역

Al Bridge - Fisherman (uncredited) 역

Rand Brooks - Listener (uncredited) 역

Don Castle - Radio Operator (uncredited) 역

Jack Chapin - Sailor (uncredited) 역

Tom Chatterton - Lieutenant (uncredited) 역

Jack Rube Clifford - Captain (uncredited) 역

Jules Cowles - Man with Finch (uncredited) 역

Leigh De Lacey - Mrs. Gill (uncredited) 역

Joe De Stefani - Fisherman (uncredited) 역

Edgar Dearing - Petty Officer (uncredited) 역

Richard Elmore - Lookout (uncredited) 역

Frank Faylen - Recruiting Officer (uncredited) 역

Budd Fine - Survivor (uncredited) 역

Allen Fox - Lookout (uncredited) 역

Frederick Lee - Sailor (uncredited) 역

Eddie Hart - Fisherman (uncredited) 역

Edward Hearn - Fisherman (uncredited) 역

Howard Hickman - Surgeon (uncredited) 역

Earle Hodgins - Fisherman (uncredited) 역

Clarke Jennings - Wireless Operator (uncredited) 역

Payne B. Johnson - Boy (uncredited) 역

Charles Jordan - Signalman (uncredited) 역

Lew Kelly - Sailor (uncredited) 역

Jack Kennedy - Fisherman (uncredited) 역

Milton Kibbee - Fisherman (uncredited) 역

Claire McDowell - Nurse (uncredited) 역

Larry McGrath - Radio Operator (uncredited) 역

Roger Moore - Orderly (uncredited) 역

Philip Morris - Fisherman (uncredited) 역

Forbes Murray - Naval Aide (uncredited) 역

Frank Orth - Old Sailor in Bilge Area (uncredited) 역

Syd Saylor - Wireless Operator Sending Coded Message (uncredited) 역

Harold Schlickenmayer - Engineer (uncredited) 역

Ferdinand Schumann-Heink - German Operator (uncredited) 역

Hans Schumm - German Sailor Looking for Wireless (uncredited) 역

Harry Semels - Cook on Tugboat (uncredited) 역

Lee Shumway - Sailor (uncredited) 역

Robert R. Stephenson - German Sailor (uncredited) 역

Harry Strang - Shore Patrol Sailor (uncredited) 역

Walter Thiele - Young German Sailor (uncredited) 역

Emmett Vogan - Junior Officer Standing by Map (uncredited) 역

Wolfram Von Bock - German Officer (uncredited) 역

Hans von Morhart - German Sailor (uncredited) 역

Doodles Weaver - Sailor (uncredited) 역