A young doctor gets stuck on a ship after treating an injured first mate. Later, he rescues a woman from plane wreckage, and with the help of the cook, he hides her away from the rowdy and dangerous crew.
| Actor | Role |
|---|---|
 Marlene DietrichEthel Marley | Ethel Marley |
 Fritz KortnerCapt. Fernando Vela | Capt. Fernando Vela |
 Robin IrvineWilliam 'T.W.' Cheyne - a young American doctor | William 'T.W.' Cheyne - a young American doctor |
 Vladimir SokoloffGrischa - the Cook | Grischa - the Cook |
 Gaston ModotMorain - the escaped convict | Morain - the escaped convict |
 Boris de FastThe tattooed sailor | The tattooed sailor |
 Feodor Chaliapin Jr.Nick (as F. Schaljapin) | Nick (as F. Schaljapin) |
| MMax MaximilianTom Butley | Tom Butley |
 Fritz AlbertiThe captain of the luxury liner | The captain of the luxury liner |
 Robert GarrisonThe landlord | The landlord |
 Heinrich GothoA sailor | A sailor |
| HHarry GrunwaldA sailor | A sailor |
| EEmil HeyseNot listed | Not listed |
 Fred ImmlerNot listed | Not listed |
| AAlfred LorettoA sailor | A sailor |
 Gerhard RitterbandNot listed | Not listed |
 Aruth WartanNot listed | Not listed |
| HHeinz WemperNot listed | Not listed |
 Christiane TourneurNot listed | Not listed |