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.
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Verdict: Unknown
> Ralph Thomas (Director)
> Ernest Steward (Director of Photography)
> Robin Estridge (Screenplay)