Marlon Brando

Robert Crain

Yul Brynner

Captain Müller

Janet Margolin

Esther

Trevor Howard

Colonel Statter

Martin Benrath

Kruse

Hans Christian Blech

Donkeyman

Wally Cox

Dr. Ambach

Max Haufler

Branner

Rainer Penkert

Milkereit

William Redfield

Baldwin

Oscar Beregi Jr.

Admiral (as Oscar Beregi)

Martin Brandt

Nissen

Charles De Vries

Kurz

Carl Esmond

Busch

Martin Kosleck

Wilke

Norbert Schiller

Steward

Rick Traeger

Schultz

Ivan Triesault

Lt. Brandt

Robert Sorrells

Koeniger

Eric Braeden

Radio Officer (uncredited)

Frank London

Merchant Marine (uncredited)

Jim Goodwin

Merchant Marine (uncredited)

Gregg Barton

Merchant Marine (uncredited)

Paul Baxley

Crew Member (uncredited)

Hal Bokar

Merchant Marine (uncredited)

Heinz Brinkmann

Crew Member (uncredited)

Gene Dynarski

Merchant Marine (uncredited)

Harold Dyrenforth

Cornelson, Ingo Navigator (uncredited)

Horst Ebersberg

Crew Member (uncredited)

Fritz Ford

Crew Member (uncredited)

Harold Goodwin

Merchant Marine (uncredited)

Sam Javis

Merchant Marine (uncredited)

Roy Jenson

Merchant Marine (uncredited)

Buck Kartalian

Merchant Marine (uncredited)

Robert Kino

Capt. Hatsuma (uncredited)

Manfred Lating

Lutz (uncredited)