• Uncredited appearance by Tracy Reed as secretary in Admiral's office.
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• A movie poster shows the name "Normana Sapienza" - a feminized, Italianized version of the name of 诺曼·威兹德姆.
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• This movie is notable for being the only occasion Sir 迈克尔·凯恩 and 奥列佛·里德 shared a scene together. It took place at a cinema lobby, where Reed plays a Teddy Boy, and Caine a sailor. It lasts only a few seconds.
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• Uncredited appearance by Roland Curram (Control room radio operator).
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• At the beginning of the film during the cinema scene a young Michael Caine and Oliver Reed can be spotted playing very small parts.
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• Uncredited appearance by Peter Swanwick as rocket control room technician.
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• The ship, F 91, is the H.M.S. Murray, launched in 1955 and broken up in 1970.
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• Opening credits list the following as "Not forgetting": 利兹·弗雷泽, Penny Morrell, Claire Gordon, and Julie Shearing.
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• Opening credits: All characters and events in this film are fictitious. Any similarity to actual events or persons, living or dead, is purely coincidental.
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