Barnes, the mate of the 'Portland', is the object of the hate of the whole ship's crew. His mistress is murdered shortly before the departure and suspicion naturally falls on him. Some time later, Jeff Cooper, the skipper, falls to his death in the middle of the night. Once again Barnes is suspected and the mate has to resort to force to maintain his authority on board. During the stopover, Barnes is interrogated and finally cleared. He is even appointed captain of the 'Portland' in replacement of Jeff and can marry his best friend's daughter.
| Actor | Role |
|---|---|
 Albert PréjeanDick Kaufman | Dick Kaufman |
 Pierre RenoirCaptain Jeff Cooper | Captain Jeff Cooper |
 André AlermeCaptain Little | Captain Little |
 René DaryBarnes, second in command | Barnes, second in command |
 André BurgèreCésar | César |
 Jean BrochardDauphin, the boss | Dauphin, the boss |
 Henri CrémieuxSharp, the radio | Sharp, the radio |
 Marie DéaMary | Mary |
 Lucien Coëdel'Pomme d'Amour' | 'Pomme d'Amour' |
 Robert DarèneCrew member | Crew member |
 Jean DaurandGus | Gus |
| MMaurice DevienneNot listed | Not listed |
 Guy FavièresSheriff | Sheriff |
| CCecil GraneShip's boy | Ship's boy |
 Gérard LandryJaspers | Jaspers |
| RRobert LepersCrew member | Crew member |
 Albert MalbertChief mechanic | Chief mechanic |
 Franck MauriceCrew member | Crew member |
 Marcel MelracCrew member | Crew member |
| SSolange MoretRose | Rose |
| SSorgelCrew member | Crew member |