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The Crab weighed 32 tons [7] - around two tons more than a normal Sherman. Sherman Crab under test. The flail has been lowered to work in a dip in the ground. Great attention was paid to marking the cleared path through the mine field. Crabs carried a pair of bins filled with powdered chalk that slowly trickled out to mark the edges of the safe ...
The Sherman Crab was a mine flail tank designed to clear a safe path through a mine-field by deliberately detonating mines in front of the vehicle; the design was first used during the North African Campaign in 1942.
Crab: A modified Sherman tank equipped with a mine flail, a rotating cylinder of weighted chains that exploded mines in the path of the tank. DD tank (from "Duplex Drive"): An amphibious version of the Sherman created by fitting M4A1 and M4A4 with a large watertight canvas housing. This increased displacement and so the tank was able to float ...
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Crab: A modified Sherman tank equipped with a mine flail, a rotating cylinder of weighted chains that exploded mines in the path of the tank. Armored bulldozer: A conventional Caterpillar D7 bulldozer fitted with armour to protect the driver and the engine. Their job was to clear the invasion beaches of obstacles and to make roads accessible by ...
In addition, the assault teams included a number of Sherman 'Crabs' from 30th Armoured Brigade - these were Sherman tanks, with a full-width, heavy duty, rotary chain flail mounted in front, which destroyed any mines in its path, thus clearing the lanes up the beach.
The British also used the Sherman hull for two other Sherman variants known as the Crab, a mine flailing tank, and the DD Sherman, the 'DD' (Duplex Drive) The DD was an amphibious tank. A flotation screen gave buoyancy and two propellers powered by the tank's engine gave propulsion in the water.
Sherman Crabs (a mine-clearing tank), cleared the way through the minefields while the AVREs battered the bunkers with their guns. The effect of such fire was devastating on the German defenders. When the commandos entered the entrenchment and opened fire, it was clear that the station could no longer be defended.