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William Holden as Capt. David Ross |
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Sophia Loren as Stella |
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Trevor Howard as Capt. Chris Ford |
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Bernard Lee as Cmdr. Wadlow |
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Oskar Homolka as Van Dam |
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Kieron Moore as Kane |
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Noel Purcell as Hotel Clerk |
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Bryan Forbes as Weaver |
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Beatrix Lehmann as Housekeeper |
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Rupert Davies as Baker |
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Russell Waters as Sparks |
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Sidney Vivian as Grogan |
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Irene Handl as Clerk |
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John Crawford as American Captain |
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Jameson Clark as English Captain |
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Guy Standeven as Policeman (uncredited) |
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Keith Faulkner as Signalman (uncredited) |
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Michael Caine as Seaman (uncredited) |
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Bart Allison as Seaman on W88 (uncredited) |
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Belita as Canteen Hostess (uncredited) |
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Pauline Chamberlain as Woman Dancing at Forces Centre (uncredited) |
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Keith Faulkner as Seaman on W88 (uncredited) |
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Renée Houston as Canteen Worker (uncredited) |
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Richard Neller as Officer in Operations Room (uncredited) |
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Ernie Rice as Officer in Operations Room (uncredited) |
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Robert Rietti as Dubbing (voice) (uncredited) |
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John Tatham as Salvage Unit Captain (uncredited) |
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Reg Thomason as Soldier at Dance (uncredited) |
| Writing | Carl Foreman | Writer |
| Writing | Jan de Hartog | Novel |
| Directing | Carol Reed | Director |
| Camera | Oswald Morris | Director of Photography |
| Production | Aubrey Baring | Associate Producer |
| Production | Carl Foreman | Producer |
| Editing | Bert Bates | Editor |
| Art | Wilfred Shingleton | Production Design |
| Art | Geoffrey Drake | Art Direction |
| Costume & Make-Up | Beatrice Dawson | Costume Design |
| Sound | Malcolm Arnold | Original Music Composer |
| Crew | Peter Peake | Technical Advisor |
