Henri Vidal as Doctor Guilbert

Florence Marly as Hilde Garosi

Fosco Giachetti as Garosi

Paul Bernard as Couturier, journalist

Jo Dest as Forster

Michel Auclair as Willy Morus

Anne Campion as Ingrid Eriksen

Jean Didier as The Captain

Lucien Hector as Eriksen

Andreas Von Halberstadt as

Marcel Dalio as Larga

Jean Lozach as

Georges Niemann as

Karl Münch as Second of the submarine

Jean Lozach as Radio operator

Max Hermann as Torpedo

Claude Vernier as Leader of the mutineers

Pierre Fuchs as

Carrère as (uncredited)

Jeanne Herviale as Doctor's Maid (uncredited)

Kurt Kronefeld as General Von Hauser (uncredited)

Thierry Michel as (uncredited)

Paul Sabas as (uncredited)