A disgraced merchant marine officer elects to stay aboard his sinking cargo ship in order to prove the vessel was deliberately scuttled and, as a result, vindicate his good name.
| Actor | Role |
|---|---|
 Gary CooperGideon Patch | Gideon Patch |
 Charlton HestonJohn Sands | John Sands |
 Michael RedgraveMr. Nyland | Mr. Nyland |
 Virginia McKennaJanet Taggart | Janet Taggart |
 Richard HarrisHiggins | Higgins |
 Emlyn WilliamsSir Wilfred Falcett | Sir Wilfred Falcett |
 Alexander KnoxPetrie | Petrie |
 Cecil ParkerInquiry Chairman | Inquiry Chairman |
 Ben WrightMike Duncan | Mike Duncan |
 Peter IllingGunderson | Gunderson |
 Terence de MarneyNot listed | Not listed |
| AAshley CowanNot listed | Not listed |
 Charles DavisNot listed | Not listed |
 John Le MesurierAttorney | Attorney |
 Noel DraytonCharlie Bell | Charlie Bell |
 John DearthReporter | Reporter |
 Paul BryarPort Official (uncredited) | Port Official (uncredited) |
 Albert CarrierAmbulance Attendant (uncredited) | Ambulance Attendant (uncredited) |
 Louis MercierCommander of Police (uncredited) | Commander of Police (uncredited) |
| RRon NymanSeaman (uncredited) | Seaman (uncredited) |
 Lomax StudyPhotographer (uncredited) | Photographer (uncredited) |