Van Heflin

as Captain Bernhard Rogge

Charles Laughton

as Admiral Russell

Mylène Demongeot

as Zizi

John Ericson

as Lieutenant Krüger

Cecil Parker

as Colonel Howard

Folco Lulli

as Paco

Alex Nicol

as Knoche / Captain Canard

Liam Redmond

as Captain Windsor

Eleonora Rossi Drago

as Elsa

John Lee

Ralph Truman

as Admiral Bensen

Grégoire Aslan

as Master of the Abdullah

Peter Carsten

as Lieutenant Mohr

Helmut Schmid

Gian Maria Volonté

as Samuel Braunstein

Dieter Eppler

as Dr. Hartmann

Edith Peters

as Suora Suora

Corrado Pani

as German sailor

Geronimo Meynier

as German sailor

Walter Barnes

Moira Orfei

as Castaway

Gérard Herter

as Captain del Sommergibile

Umberto Spadaro

as Telegrapher

Brendan Fitzgerald

Booth Colman

Philo Hauser

as Clown

Joachim Luther

Mary Lee Culver