Nazi propaganda film showing the development of the German navy's submarine fleet.
as Wilhelm Bauer
as Großfürst Konstantin
as Admiral Brommy
as Paul Schultze
as Schiffsbauer Karl Hösly
as König Maximilian
as Vater Hösly
as Sophie Hösly
as Vorsitzender des Gerichts
as Mr. Wood
as General
as Russischer Intrigant Trotzky
as Senator
as von Klamm
as Offizier der russischen Hafenwache
as Begleiter des König Maximilian
