Hansjörg Felmy as Teichmann

Sabine Bethmann as Edith Wegener

Wolfgang Preiss as U-Bootkommandant Lüttke

Horst Frank as Heyne

Heinz Engelmann as Erich Wegener, Flottillenchef

Siegfried Lowitz as Leutnant Pauli

Dirk Dautzenberg as Obermaat

Karl Lieffen as Dr.Timmler

Mady Rahl as Dora

Friedrich Schütter as Oberleutnant Brandstetter

Vicco von Bülow as Matrose

Wolfgang Wahl as Wächter

Thomas Braut as

Ernst Reinhold as

Peter Frank as

Stefan Wigger as

Reinhold Brandes as