The British Navy faces a formidable challenge in World War II when the German battleship Tirpitz, anchored in a Norwegian fjord, proves virtually impervious to attack. In response, the Navy assembles a top-secret commando unit to launch a daring operation, utilizing small submarines to deploy underwater explosives beneath the ship.

Above Us the Waves
During World War II, a group of British commandos undertake a hazardous operation to destroy the German battleship Tirpitz, a powerful presence in the North Atlantic.