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James Caan as Cmdr. Richard Bolton, RNVR |
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David Sumner as Lt. Davies R.N.V.R |
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Norman Bowler as Sub-Lt. Pennington, RN |
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Paul Young as Leading Seaman Quentin |
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Brian Grellis as CPO Barquist X 3 |
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William Dysart as Lt. Robert Talbot Gogan R.N.R. |
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John Kelland as Sub-Lt. Keith Willis, RNVR |
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Kenneth Farrington as CPO Boker Knowles |
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Carl Rigg as CPO Norman Kennedy |
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Steve Kirby as Leading Seaman X-2 |
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Nick Tate as Leading Seaman X-1 |
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George Pravda as Capt. Erlich of the 'Lindendorf' |
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Rupert Davies as Vice Admiral Redmayne (uncredited) |
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Keith Alexander as Sub. Lt. X-3 |
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Diana Beevers as WRNS Officer (uncredited) |
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Paul Hansard as Cmdr. Steiner (uncredited) |
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Luke Hanson as German Lieutenant (uncredited) |
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Desmond Jordan as Naval Doctor (uncredited) |
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Dennis Mayers as Sub-Lieutenant on X-1 (uncredited) |
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Doug Robinson as Seaman in Self-defence Demonstration (uncredited) |
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George Roubicek as Redmayne's Flag Officer (uncredited) |
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Richard Steele as Captain in Redmayne's Office (uncredited) |
| Directing | William A. Graham | Director |
| Production | John C. Champion | Producer |
| Writing | John C. Champion | Story |
| Writing | Edmund H. North | Story |
| Writing | Donald S. Sanford | Screenplay |
| Writing | Guy Elmes | Screenplay |
| Sound | Ron Goodwin | Original Music Composer |
| Camera | Paul Beeson | Director of Photography |
