- William H. Macy
- Chief of Boat Nathan Travers
- Til Schweiger
- Kapitän Jonas Herdt
- Thomas Kretschmann
- 1st Watch Officer Ludwig Cremer
- Clark Gregg
- Executive Officer Teddy Goodman
- Scott Caan
- Lt. Cmdr. Randall Sullivan
- Rene Heger
- Quartermaster Klause
- Carmine Giovinazzo
- Buck Cooper
- Jeremy Sisto
- Jason Abers
- A.J. Buckley
- Medical Officer
- Sam Huntington
- Virgil Wright
- Connor Donne
- Lt. Bauer
- Ian Somerhalder
- Danny Miller
- Branden Morgan
- Benny Romano
- Andy Gätjen
- Christophe
- Gavin Hood
- Achilles Captain
- Alex Prusmack
- Andreas
- Sascha Rosemann
- Lars
- Justin Thomson
- Wilhem
- Sven-Ole Thorsen
- Hans
- Patrick Gallagher
- Ox
- Matt Lindquist
- Friedrich
- Lauren Holly
- Mrs. Rachel Travers
- Xander Berkeley
- Admiral Kentz
- Chris Ellis
- Captain Samuel Littleton
- Jim Burke
- U 821 Kapitan
- Roy Werner
- U 1221 Kapitan
- William Gregory Lee
- U.S.S. Logan Radarman
- Doug Biolchini
- U.S.S. Logan Radioman
- Thomas DeGrezia
- Planesman
- Gunter Simon
- U 821 Hydrophone Operator
- Sonny Surowiec
- U 821 Radio Operator
- Vanessa Branch
- Admiral Kentz's Secretary
- Patrick Barnitt
- Achilles Helmsman
- Hannes Fritsch
- U 821 Captain
- Eric Parker
- German Soldier
- Chriss Anglin
- Armed Sailor
- Winston Churchill
- Self
- Hans Hernke
- Young Sailor
- Adolf Hitler
- Self
- Leif Holt
- German Crew Member
- Anthony K. Lewis
- Armed Guard #2
- Sam Mathewes
- German Soldier
- Brad Newman
- Prison Guard
- Franklin D. Roosevelt
- Self
- Justin Sandler
- U 429: German Sailor
- David Chandler Secor
- Radio Operator
- David Shae
- German Soldier
- Daniel Toscano
- Swordfish Sailor
- Branden Waits
- German Soldier
