The Probert Encyclopaedia of Warfare

ARK

The Armoured Ramp Carrier (ARK) was a British bridging tank based on a Churchill Tank with the turret removed, and timbered trackways across the top. The ARK was driven into position and two folding ramps lowered providing a bridge for other vehicles. The ARK was unarmed, manned by a crew of four and powered by a Bedford twin-six petrol engine giving a top speed of 20 kmh.
Research ARK