Cast
Archie Gibbs
Kapitaen Ganz, The U-Boat Captain
Alfonse Lamont
Gunther Rudehoff, Gestapo Agent
Destroyer Commander Tom Bristol
Convoy Ship's Engineer, not listed in credits
Convoy Ship Commander, not listed in creditsU-Boat Lt. Dorner, not listed in credits 
Prof. Van der Brek, not listed in creditsKohl, not listed in credits 
Benny, Seaman's Union Hall Man, not listed in creditsConvoy Ship Lt. Nolan, not listed in credits 
American Naval Officer, not listed in creditsGuard, not listed in credits 
George Acton, Nazi Spy, not listed in credits
Hans Braustig, Injured Sailor, not listed in creditsU-Boat Officer Hagemann, not listed in credits 
Plane Radioman, not listed in creditsRinelli, not listed in credits Pilot, not listed in credits
U-Boat Torpedo Officer Kerck, not listed in creditsLieutenant Blake, not listed in credits 
American Lieutenant, not listed in creditsPetty Officer, not listed in credits Guard, not listed in credits Cleric Captain, not listed in credits Prof. Biencawicz, not listed in credits First Lookout, not listed in credits 
Destroyer Lt. Hagen, not listed in credits
Sound Man, not listed in credits
Mack, Seaman's Union Hall Clerk, not listed in credits
Prof. Hamilton, not listed in credits
Officer Elsner, not listed in creditsWireless Sparks, not listed in credits Depth Sailor, not listed in credits Seaman Edwards, not listed in credits Steer Man, not listed in credits 
C.P.O. Shaw, not listed in credits
Lt. Howard, not listed in credits
