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Britain
Carrier Churchill 3 inch Gun Mk I (A22D)
Ordnance classification - A22

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The Carrier Churchill 3 inch Gun Mk I (A22D) was designed in 1941, manufactured by Vauxhall Motors based on the existing fully tracked Churchill III and was in use from 1942 to 1943.

Carrier Churchill 3 inch Gun Mk I (A22D) scale illustration

General Details
Specifications
Operational Date(s)1942 - 1943
Ordnance classificationA22
Quantity Produced45
Weight40 tonne
Crew4
M.G's smalln/a
M.G's large(>10mm)n/a
Length7.51 mtr
Width3.28 mtr
Height2.80 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 Carrier Churchill 3 inch Gun Mk I (A22D) was designed in 1941, manufactured by Vauxhall Motors based on the existing fully tracked Churchill III and was in use from 1942 to 1943.

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 good providing a max speed of about 8 mph and a range of about 36 miles.

Its main armament consisted of an Ordnance Q.F. 3inch 20cwt AA which could penetrate 91 mm of flat plate at 800 metres

This version of the Churchill tank had the turret replaced by a box like superstructure which was 88mm thick and which held the obsolete QF 3 inch (76 mm) 20 cwt AA gun. This vehicle never saw action as other vehicles mounting the 17pdr with it superior anti tank capabilities became available.

Armour Details
Turret
Frontn/a
Siden/a
Rearn/a
Topn/a
Superstructure
Front88mm@(88mm)
Side95mm@(95mm)
Rear50mm@(50mm)
Top19mm@90°(19mm)
Hull
Front50mm@70°(146mm)
Side95mm@(95mm)
Rear50mm@(50mm)
Top19mm@90°(19mm)
Armour (x)mm @ (y)° (Effective mm @ 0°)
Effective Armour - Maximum 146 mm - Minimum 19 mm



Weapon Details
Flag
Ordnance Q.F. 3inch 20cwt AA Blank
Manufactured1914 - 1944
Calibre76.20mm
LengthL/45
 
Ammunition Details
Name/Id Calibre Weight MVelocity Explosive Content
AP(AP)
76.20mm 7.26Kg 610M/Sec
Range(Mtr)1002004008001200160020002400
Flight Time(Secs) 0.17 0.34 0.69 1.47 2.34 3.32 4.45 5.74
Penetration(mm@30°) 105 97 89 78 69 59 51 43
Penetration(mm@0°) 122 113 103 91 80 69 59 50
Hit Probability(%) 98 98 98 88 54 25 15 3

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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