Excelsior tank

Tank, Heavy Assault, A33 (Excelsior)
Type	Assault tank/infantry tank
Place of origin	United Kingdom
Production history
Manufacturer	English Electric
No. built	2
Specifications (Second pilot)
Mass	40 tons
Length	22 ft 8 in (6.91 m)
Width	11 ft 2 in (3.40 m)
Height	7 ft 11 in (2.41 m)
Crew	5 (Commander, gunner, loader, driver, co-driver)
Armour	20 to 114 mm (0.79 to 4.49 in)
Main armament	Ordnance QF 75 mm 64 rounds
Secondary armament	2 x 7.92 mm Besa machine gun
Engine	Rolls-Royce Meteor V12 petrol 620 bhp (460 kW)
Suspension	Improved Christie
Operational range	99 mi (160 km)
Maximum speed	24 mph (39 km/h) off-road: 12 mph (19 km/h)

The Tank, Heavy Assault, A33 (Excelsior) was a British experimental heavy tank based on the Cromwell (A27) design developed in the Second World War. It was developed when there were concerns as to performance of the Churchill tank.