Cast
Chief of Boat Nathan Travers
Kapitän Jonas Herdt
1st Watch Officer Ludwig Cremer
Executive Officer Teddy Goodman
Lt. Cmdr. Randall Sullivan
Quartermaster Klause
Buck Cooper
Jason Abers
Medical Officer
Virgil Wright
Lt. Bauer
Danny Miller
Benny Romano
Christophe
Achilles Captain
Andreas
Lars
Wilhem
Hans
Ox
Friedrich
Mrs. Rachel Travers
Admiral Kentz
Captain Samuel LittletonU 821 Kapitan 
U 1221 Kapitan
U.S.S. Logan RadarmanU.S.S. Logan Radioman 
PlanesmanU 821 Hydrophone Operator 
U 821 Radio Operator
Admiral Kentz's Secretary
Achilles Helmsman
German Soldier
Armed Sailor, not listed in credits
Young Sailor, not listed in credits
German Crew Member, not listed in creditsArmed Guard #2, not listed in credits 
German Soldier, not listed in credits
Prison Guard, not listed in credits
U 429: German Sailor, not listed in creditsRadio Operator, not listed in credits 
German Soldier, not listed in credits
Swordfish Sailor, not listed in credits
German Soldier, not listed in credits
