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Edward Judd as Lt. Cmdr. Tarlton |
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James Robertson Justice as RAdm. Rainbird |
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Laurence Payne as Lt. Seaton |
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Joachim Fuchsberger as Cmdr. Scheffler |
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Arthur O'Sullivan as Mike Fitzgerald |
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Albert Lieven as Capt. Neymarck |
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Richard Carpenter as Lt. Haskins |
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Nigel Green as Chief ERA Lovejoy |
| Production | Bertram Ostrer | Producer |
| Directing | C.M. Pennington-Richards | Director |
| Writing | Hugh Woodhouse | Writer |
| Writing | Bertram Ostrer | Writer |
| Camera | Stanley Pavey | Director of Photography |
| Art | Charles Bishop | Art Direction |
| Sound | Clifton Parker | Original Music Composer |
| Editing | Bill Lewthwaite | Editor |
| Camera | Laurie Ridley | Still Photographer |
