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Canada
Inf Tank Mk IV (Churchill 5 - V)
Ordnance classification - A22

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The Inf Tank Mk IV was designed in 1942, manufactured by Vauxhall Motors based on the existing fully tracked Churchill and was in use from 1943 to 1945.

Flag of World War 2 Canada
Photo of Inf Tank Mk IV (Churchill  5 - V)
Inf Tank Mk IV(Churchill  5 - V) scale illustration

General Details
Specifications
Operational Date(s)1943 - 1945
Ordnance classification A22
Quantity Produced241
Weight40 tonne
Crew5
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/Weight8 hp/tonne
General Information
The Inf Tank Mk IV was designed in 1942, manufactured by Vauxhall Motors based on the existing fully tracked Churchill and was in use from 1943 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. Its main armament consisted of an Ordnance Q.F. 95mm Howitzer which could penetrate 75 mm of flat plate at 100 metres

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 MkV was the close support version with a 95mm howitzer replacing the 6pdr.

Armour Details
Turret
Front88mm@(88mm)
Side76mm@(76mm)
Rear89mm@(89mm)
Top16mm@90°(16mm)
Superstructure
Front88mm@20°(94mm)
Side76mm@(76mm)
Rear64mm@(64mm)
Top16mm@90°(16mm)
Hull
Front38mm@70°(111mm)
Side76mm@(76mm)
Rear64mm@(64mm)
Top16mm@90°(16mm)
Armour (x)mm @ (y)° (Effective mm @ 0°)
Effective Armour - Maximum 111 mm - Minimum 16 mm



Weapon Details
Flag
Ordnance Q.F. 95mm Howitzer
(Field Gun)
Blank
Manufacturedunknown - 1945
Calibre95mm
 
Ammunition Details
Name/Id Calibre Weight MVelocity Explosive Content
95mm APHE
(APHE Armor Piercing High Explosive)
95mm 6.72Kg 502M/Sec
Range(Mtr)1002004008001200160020002400
Flight Time(Secs) 0.2 0.41 0.83 1.74 2.74 3.83 5.05 6.4
Penetration(mm@30°) 64 60 56 51 45 41 37 32
Penetration(mm@0°) 75 70 65 59 53 48 43 38
Hit Probability(%) 98 98 98 77 39 22 6 3



95mm HE
(HE High Explosive)
95mm 11.34Kg 320M/Sec ≈1.701Kg explosive
Range(Mtr)1002004008001200160020002400
Flight Time(Secs) 0.32 0.64 1.3 2.73 4.29 6.01 7.92 10.04
Direct Fire
Range(Mtr)1002004008001200160020002400
Flight Time(Secs) 0.32 0.64 1.3 2.73 4.29 6.01 7.92 10.04
Hit Probability(%) 98 98 93 39 15 3 2 0
Blast/Fragmentation Effects
Burst radius Infantry in open 99% kill4 mtr Burst radius Infantry in open 66% kill8 mtr
Burst radius Infantry in open 33% kill22 mtr  Armour Penetration inc roof at 1 mtr5 mm
An explosion within 4 mtr of infantry in the open will cause 99% casualties - lethal.
An explosion within 8 mtr of infantry in the open will cause > 66% casualties and could damage some AFV's.
An explosion within 22 mtr of infantry in the open will cause 33% casualties.
The blast effect of this shell exploding within 1 mtr of an armoured vehicle will penetrate 5 mm of the tank armour including the roof.

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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