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Tank Heavy, TOG II
TOG2 Tank Bovington.jpg
TOG II* at Bovington tank museum
Type super-heavy tank
Place of origin United Kingdom
Production history
Designed 1940[1]
Manufacturer William Foster & Co.[1]
Produced 1941[1]
Number built 1 prototype
Weight 80 long tons (81.3 metric tons)[2]
Length 10.13 m (33 ft 3 in)[2]
Width 3.12 m (10 ft 3 in)[2]
Height 3.05 m (10 ft 0 in)[2]
Crew 6 (Commander, gunner, 2 loaders, driver, co-driver)

Armour 75 mm at the front of the turret 50 mm at the sides and 25mm at the rear of the tank
cemented armour on 0.5 inch mild steel
QF 17 pdr (76.2 mm) gun
7.92 mm BESA machine gun
Engine Paxman-Ricardo 12-cylinder diesel-electric
600 hp (450 kW)
Transmission 2 electric motors
Suspension unsprung (TOG II)
torsion bar (TOG II*)
50 mi (80 km)[2]
Speed 8.5 mph (13.7 km/h)[2]

The Tank, Heavy, TOG II was a prototype British tank design produced in the early part of the Second World War in case the battlefields of northern France turned into a morass of mud, trenches and craters as had happened during the First World War. When this did not happen the tank was not needed and the project terminated.

A development of the TOG 1 design, only a single prototype was built before the project was dropped.


The second design to come out of the Special Vehicle Development Committee (nicknamed "The Old Gang" as it was made up of people who had worked on the original British tanks of the First World War) the TOG 2 was similar to the TOG 1 and kept many of its features but mounted the turret developed for the Cruiser Mk VIII Challenger tank design with the QF 17-pounder (76.2 mm) gun. Instead of the track path arrangement of the TOG 1 which - like that of the First World War British tanks - ran up over the top of the hull and back down, the track path was lower on the return run and the doors were above the tracks. Ordered in 1940, built by Foster's of Lincoln, the prototype ran for the first time in March 1941.

Although equipped with the same electro-mechanical drive as the TOG 1, the TOG 2 used twin generators and no problems were reported. It was modified to include, among other things, a change from the unsprung tracks to a torsion bar suspension and went through successful trials in May 1943. No further development occurred, although a shorter version, the TOG 2 (R) was mooted. The TOG 2 can be seen at the Bovington Tank Museum.

See also[edit]


  1. ^ a b c White p68
  2. ^ a b c d e f Tank Museum accession record