- Rudolf Forster
- Kapitanleutnant Helmut Liers
- Fritz Genschow
- Oberleutnant 'Phipps' Fredericks
- Adele Sandrock
- Liers' Mother
- Camilla Spira
- GreteJaul, Fredericks' girl
- Paul Westermeier
- Seaman Jaul
- Gerhard Bienert
- Seaman Böhm
- Friedrich Gnaß
- Juraczik
- Franz Nicklisch
- Petermann
- Hans Leibelt
- Bürgermeister von Meerskirchen
- Else Knott
- Helga, Jaul's girl
- Eduard von Winterstein
- Hauptmann Kolch
- Charles Bush
- English Seaman
- Frank Perfitt
- English Seaman
- William Cavanagh
- English Seaman
- G.W. Stroud
- English Seaman
- A.A.F. Trebes
- English Seaman
- Hedy Krilla
- (as Hedwig Schlichter)
- Paul Henreid
- (as Paul von Hernreid)
