Marlon Brando
Robert Crain
Acting
Yul Brynner
Captain Müller
Acting
Janet Margolin
Esther
Acting
Trevor Howard
Colonel Statter
Acting
Martin Benrath
Kruse
Acting
Hans Christian Blech
Donkeyman
Acting
Wally Cox
Dr. Ambach
Acting
Max Haufler
Branner
Acting
Rainer Penkert
Milkereit
Acting
William Redfield
Baldwin
Acting
Oscar Beregi Jr.
Admiral (as Oscar Beregi)
Acting
Martin Brandt
Nissen
Acting
Charles De Vries
Kurz
Acting
Carl Esmond
Busch
Acting
Martin Kosleck
Wilke
Acting
Norbert Schiller
Steward
Acting
Rick Traeger
Schultz
Acting
Ivan Triesault
Lt. Brandt
Acting
Robert Sorrells
Koeniger
Acting
Eric Braeden
Radio Officer (uncredited)
Acting
Frank London
Merchant Marine (uncredited)
Acting
Jim Goodwin
Merchant Marine (uncredited)
Acting
Gregg Barton
Merchant Marine (uncredited)
Acting
Paul Baxley
Crew Member (uncredited)
Crew
Hal Bokar
Merchant Marine (uncredited)
Acting
Heinz Brinkmann
Crew Member (uncredited)
Acting
Gene Dynarski
Merchant Marine (uncredited)
Acting
Harold Dyrenforth
Cornelson, Ingo Navigator (uncredited)
Acting
Horst Ebersberg
Crew Member (uncredited)
Acting
Fritz Ford
Crew Member (uncredited)
Acting
Harold Goodwin
Merchant Marine (uncredited)
Acting
Sam Javis
Merchant Marine (uncredited)
Acting
Roy Jenson
Merchant Marine (uncredited)
Acting
Buck Kartalian
Merchant Marine (uncredited)
Acting
Robert Kino
Capt. Hatsuma (uncredited)
Acting
Manfred Lating
Lutz (uncredited)
Acting