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Inf Tank Mk IV (Churchill 9 - IX)
Ordnance classification - A22

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The Inf Tank Mk IV was designed in 1943, manufactured by Vauxhall Motors based on the existing fully tracked Churchill and was in use from 1944 to 1945.

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Photo of Inf Tank Mk IV (Churchill  9 - IX)
Inf Tank Mk IV(Churchill  9 - IX) scale illustration

General Details
Operational Date(s)1944 - 1945
Ordnance classificationA22
Quantity Produced0
Weight38.5 tonne
M.G's small2
M.G's large(>10mm)n/a
Length7.51 mtr
Width3.28 mtr
Height2.49 mtr
Engine Details/Performance
Max Road Speed16 mph
Max Cross Country Speed8 mph
Range Road90 miles
Range Cross Country36 miles
Fuel TypePetrol
Fuel Capacity190 gal
Horse Power350 hp
Power/Weight9 hp/tonne
General Information
The Inf Tank Mk IV was designed in 1943, manufactured by Vauxhall Motors based on the existing fully tracked Churchill and was in use from 1944 to 1945.

The vehicle was powered by Bedford '350HP' petrol powerplant producing 350 HP which could drive the vehicle on roads at up to 16 mph with a range of about 90 miles before refuelling. Its cross country performance was adequate providing a max speed of about 8 mph and a range of about 36 miles.

It was armed with 2 light machine guns. The Churchill Infantry tank was designed as a tank that could cope with movement through heavily shelled areas, and provide adequate protection for the crew.

The vehicle was layed out in a similar way to the tanks from the First World War with the rear Bedford 350hp engine driving the tracks, to the front via small idlers to the fron main idler, then via 11small sprung road wheels. The first vehicles had many mechanical faults and hence many subsequent modifications.

The MkIX classified were reworked older vehicles usually MkIII with additional applique armour to bring them up to MkVII levels of armour, and armed with the 75mm gun.

Armour Details
Armour (x)mm @ (y)° (Effective mm @ 0°)
Effective Armour - Maximum 162 mm - Minimum 19 mm

Hit probability is based on a static 2 x 2.4 metre panel at 0 degrees(vertical) at the range specified.

The data that has been used to create these records has come from Wikipedia, The Lone Sentry, The Bundes Archive and numerous books and websites that have provided the detailed information that has not been available anywhere else. The information we use to calculate the penetration tables, flight times and the hit probability comes from the Gun Calibre, the Shell Mass(Kg) and the muzzle velocity, plus range reductions to allow for gravity and wind resistance. This calculation originally came from a pre-war Krupp calculation which has been modified, and seems to fit the actual test results.

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