Tijdens de Tweede Wereldoorlog wordt Kapitein Ericson aangesteld als bevelhebber van een Brits oologsschip dat andere schepen beschermt bij hun reis over de Atlantische Oceaan. Ericson is getraumatiseerd door de ervaring op zijn vorige schip waarbij hij veel manschappen verloor.
| Directing | Charles Frend | Director |
| Writing | Nicholas Monsarrat | Novel |
| Writing | Eric Ambler | Screenplay |
| Production | Leslie Norman | Producer |
| Sound | Alan Rawsthorne | Music |
| Camera | Gordon Dines | Director of Photography |
| Editing | Peter Tanner | Editor |
| Art | Jim Morahan | Art Direction |
| Costume & Make-Up | Sidney Turner | Makeup Artist |
| Costume & Make-Up | Barbara Barnard | Hairstylist |
| Directing | Norman Priggen | Assistant Director |
| Crew | Sydney Pearson | Special Effects |
| Camera | Chic Waterson | Camera Operator |
| Production | Hal Mason | Production Supervisor |
| Production | L. C. Rudkin | Unit Production Manager |
| Sound | Stephen Dalby | Sound Supervisor |
| Sound | Leo Wilkins | Sound Recordist |
| Directing | Jean Graham | Continuity |
| Costume & Make-Up | Anthony Mendleson | Wardrobe Designer |
| Visual Effects | Geoffrey Dickinson | Visual Effects |
| Camera | John R.F. Stewart | Additional Photography |
| Crew | J. E. Broome | Technical Advisor |
| Crew | R. S. Abram | Technical Advisor |
| Crew | Jo Jago | Second Unit Cinematographer |
| Crew | Paul Beeson | Second Unit Cinematographer |
| Sound | Ernest Irving | Conductor |
