U-Boat Prisoner

Bruce Bennett

Archie Gibbs

Erik Rolf

Kapitaen Ganz, The U-Boat Captain

John Abbott

Alfonse Lamont

John Wengraf

Gunther Rudehoff, Gestapo Agent

Robert B. Williams

Destroyer Commander Tom Bristol

Trevor Bardette

Convoy Ship Commander (uncredited)

Anthony Caruso

Benny, Seaman's Union Hall Man (uncredited)

Eric Feldary

Hans Braustig, Injured Sailor (uncredited)