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Directed by | |||
| Lew Landers | |||
| Budd Boetticher | (uncredited) | ||
Writing credits | ||
| Archie Gibbs | (story) | |
| Aubrey Wisberg | (screenplay) | |
| Malcolm Stuart Boylan | (additional dialogue) | |
| Bruce Bennett | ... | Archie Gibbs | |
| Erik Rolf | ... | Kapitaen Ganz, The U-Boat Captain | |
| John Abbott | ... | Alfonse Lamont | |
| John Wengraf | ... | Gunther Rudehoff, Gestapo Agent | |
| Robert Williams | ... | Destroyer Commander Tom Bristol | |
| rest of cast listed alphabetically: | |||
| Sam Ash | ... | Convoy Ship's Engineer (uncredited) | |
| Trevor Bardette | ... | Convoy Ship Commander (uncredited) | |
| Sven Hugo Borg | ... | U-Boat Lt. Dorner (uncredited) | |
| Egon Brecher | ... | Prof. Van der Brek (uncredited) | |
| Frederic Brunn | ... | Kohl (uncredited) | |
| Anthony Caruso | ... | Benny, Seaman's Union Hall Man (uncredited) | |
| Paul Conrad | ... | Convoy Ship Lt. Nolan (uncredited) | |
| Ralph Dunn | ... | American Naval Officer (uncredited) | |
| Carl Ekberg | ... | Guard (uncredited) | |
| George Eldredge | ... | George Acton, Nazi Spy (uncredited) | |
| Eric Feldary | ... | Hans Braustig, Injured Sailor (uncredited) | |
| Arno Frey | ... | U-Boat Officer Hagemann (uncredited) | |
| Terry Frost | ... | Plane Radioman (uncredited) | |
| Jack Gardner | ... | Rinelli (uncredited) | |
| Eugene Gericke | ... | Pilot (uncredited) | |
| Frederick Giermann | ... | U-Boat Torpedo Officer Kerck (uncredited) | |
| Fred Graff | ... | Lieutenant Blake (uncredited) | |
| Fred Graham | ... | American Lieutenant (uncredited) | |
| Peter Helmers | ... | Petty Officer (uncredited) | |
| Tom Holland | ... | Guard (uncredited) | |
| Robert Homans | ... | Cleric Captain (uncredited) | |
| Erwin Kalser | ... | Prof. Biencawicz (uncredited) | |
| Jimmy Lane | ... | First Lookout (uncredited) | |
| Nelson Leigh | ... | Destroyer Lt. Hagen (uncredited) | |
| Rolf Lindau | ... | Sound Man (uncredited) | |
| George Lloyd | ... | Mack, Seaman's Union Hall Clerk (uncredited) | |
| Kenneth MacDonald | ... | Prof. Hamilton (uncredited) | |
| John Merton | ... | Officer Elsner (uncredited) | |
| Edwin Mills | ... | Wireless Sparks (uncredited) | |
| Frederick Pressel | ... | Depth Sailor (uncredited) | |
| Neil Reagan | ... | Seaman Edwards (uncredited) | |
| Robert L. Stephenson | ... | Steer Man (uncredited) | |
| Ray Teal | ... | C.P.O. Shaw (uncredited) | |
| John Tyrrell | ... | Lt. Howard (uncredited) | |
Produced by | |||
| Wallace MacDonald | .... | producer | |
Cinematography by | |||
| Burnett Guffey | |||
Film Editing by | |||
| Paul Borofsky | |||
Art Direction by | |||
| Lionel Banks | |||
| Perry Smith | |||
Set Decoration by | |||
| Robert Priestley | |||
Second Unit Director or Assistant Director | |||
| Milton Feldman | .... | assistant director | |
Sound Department | |||
| Paul Holly | .... | sound | |
Music Department | |||
| Mischa Bakaleinikoff | .... | musical director | |
| Mischa Bakaleinikoff | .... | composer: stock music (uncredited) | |
| Mario Castelnuovo-Tedesco | .... | composer: stock music (uncredited) | |
| Werner R. Heymann | .... | composer: stock music (uncredited) | |
| Ben Oakland | .... | composer: stock music (uncredited) | |
| Karol Rathaus | .... | composer: stock music (uncredited) | |
| Ernst Toch | .... | composer: stock music (uncredited) | |
| Victor Young | .... | composer: stock music (uncredited) | |
| Company credits | Technical specifications | Main details |