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

Rainer Penkert

Milkereit

William Redfield

Baldwin

Oscar Beregi Jr.

Admiral (as Oscar Beregi)

Carl Esmond

Busch

Martin Kosleck

Wilke

Norbert Schiller

Steward

Ivan Triesault

Lt. Brandt

Eric Braeden

Radio Officer (uncredited)

Jim Goodwin

Merchant Marine (uncredited)

Gregg Barton

Merchant Marine (uncredited)

Paul Baxley

Crew Member (uncredited)

Gene Dynarski

Merchant Marine (uncredited)

Horst Ebersberg

Crew Member (uncredited)

Roy Jenson

Merchant Marine (uncredited)

Buck Kartalian

Merchant Marine (uncredited)