Nazi propaganda film showing the development of the German navy's submarine fleet.
Directed byHerbert Selpin
Written byCurt J. Braun, Herbert Selpin, Hans Arthur Thies (novel), Franz Weichenmayr, Walter Zerlett-Olfenius
CountryGermany
Runtime91 min
On screen
Alexander Golling
Eva Immermann
Richard H�ussler
Herbert H�bner