ABOVE US THE WAVES - John Mills (1955 British war film)

The Royal Navy (RN) is concerned about attacks on convoys by German submarines while having to keep "half the fleet" guarding against the German battleship Tirpitz. Tirpitz is 60 miles from the sea inside a Norwegian fjord, and attempts by the Royal Air Force (RAF) to sink her have failed. Commander Fraser (Mills) is determined to prove that attack by human torpedoes is practical, despite scepticism from RN higher echelons.

Fraser assembles and trains a force of British commando frogmen officers and ratings to use the Mk I Human Torpedo manned torpedoes (Chariots) at their Scottish base. After being refused permission to attack Tirpitz, due to the RN policy of avoiding unproven weaponry, the team manage to attach dummy limpet mines to the admiral's own ship.
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