Van Heflin

Captain Bernhard Rogge

Charles Laughton

Admiral Russell

Mylène Demongeot

Zizi

John Ericson

Lieutenant Krüger

Cecil Parker

Colonel Howard

Folco Lulli

Paco

Alex Nicol

Knoche / Captain Canard

Liam Redmond

Captain Windsor

Eleonora Rossi Drago

Elsa

Ralph Truman

Admiral Bensen

Grégoire Aslan

Master of the Abdullah

Peter Carsten

Lieutenant Mohr

Gian Maria Volonté

Samuel Braunstein

Gérard Herter

Captain del Sommergibile

Dieter Eppler

Dr. Hartmann

Duilio Coletti