Bruce Bennett (Archie Gibbs)
Erik Rolf (Kapitan Ganz)
John Abbott (Alfonse Lamont)
John Wengraf (Rudehoff)
Fred Graham (Lt. Blake)
Paul Conrad (Lt. Nolan)
Robert B. Williams (Cmdr. Bristol)
Arno Frey (Hagemann)
Sven Hugo Borg (Dorner)
Nelson Leigh (Lt. Hagen)
Trevor Bardette (Cmdr. Prentiss)
Eric Feldary (Braustig)
Kenneth MacDonald (Clyde Hamilton)
Erwin Kalser (Biencawicz)
Egon Brecher (Sigo van der Brek)
Frederick Giermann (First Officer Kerck)