An analysis of the bombing accuracy of 617 Squadron and 9 Squadron on Tallboy sorties. Lily catches Marshall in the dumpster trying to find a set of Tallboy O-rings. Tait's aircraft was the first to drop its Tallboy, which hit "Tirpitz". Another Tallboy probably hit "Tirpitz". As with the earlier Tallboy, the fins of the Grand Slam generated a stabilising spin. In 1944 it was the target of Tallboy and Azon bombing raids by Allied planes. The Tallboy had been successfully used by No. The T-10 was an American-made version of the Tallboy modified to use standard American components. The Tallboy bomb weighed and had been developed to destroy heavily armoured targets. Tallboy strikes caused a partial collapse of the cave, and the tunnels were blocked off. The RAF used Lancaster bombers to carry Tallboy bombs to penetrate the ship's heavy armour. It was destroyed by RAF bombing using Tallboy blockbuster bombs in July 1944.