In World War II, the greatest threat to the British navy is the German battleship Tirpitz. While anchored in a Norwegian fjord, it is impossible to attack by conventional means, so a plan is hatched for a special commando unit to attack it, using midget submarines to plant underwater explosives.
John Gregson | Lieutenant Alec Duffy | |
Donald Sinden | Lieutenant Tom Corbett | |
James Robertson Justice | Admiral Ryder | |
Michael Medwin | Smart | |
Theodore Bikel | German Officer | |
James Kenney | Abercrombie |
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