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Britain's Infantry Mk IV, A22, Churchill IV
Infantry Mk IV, Churchill IV, A22:  Imperial War Museum |
Infantry Mk IV, Churchill IV, A22:  |
Infantry Mk IV, Churchill IV, A22.
Nearest tank is Churchill Mk IV NA and others are Churchill Mk VIIs: Imperial War Museum |
Infantry Mk IV, Churchill IV, A22: Churchill Mk IIIs and Churchill Mk IVs. Near the River Foglia in September 1944:  Imperial War Museum |
Design
Like Mk III but with cast turret. 84: 6 pdr. Early versions had Mk 5 6 pdr with counterweight on end.
Variants
- Churchill MK IV:
- Churchill Mk IV (NA75): With the experience gained in North Africa, and the fact that the 6 pdr. had no high explosive ammunition, it was decided to install the 75 mm gun and mantlets from wrecked Shermans.7,13 21st Tank Brigade, 1st Army in North Africa fitted 120 Mk IVs with these 75 mm guns.7
Usage
First saw action in Tunisia.13
Used in Sicily and Italy to 1945.
Churchill (A22) Mk IV |
|
|---|---|
| Crew | Commander, gunner, loader, driver, co-driver/hull gunner.3,9 51,3,4,7,9 |
| Physical Characteristics | |
| Weight | 87,306 lb3 39,000 kg, 39,626 kg12, 39,660 kg1 35.1 tons, 38.5 tons4, 39 tons1,9,12 |
| Length w/gun | 24' 5"1,3,4,7, 25' 2"9 7.442 m1 |
| Length w/o gun | 25' 2"9 7.44 m |
| Height | 3.25 m, 2.74 m1 8' 2"4,7,9, 9'1, 10' 8"3 |
| Width | 2.74 m, 3.45 m1 9'3, 10' 8"4,7,9, 11' 4"1 Without side air louvres: 9' 2"9 |
| Ground clearance | 0.51 m |
| Ground contact length | |
| Ground pressure | 13.1 psi |
| Turret ring diameter | |
| Armament | |
| Main | 57 mm OQF 6 pdr Mk III or V 6 pdr4,5 6 pdr Mk III or Mk V OQF12 57 mm OQF 6 pdr Mk III L/439 57 mm OQF 6 pdr Mk V L/50 (few vehicles)9 NA: 75 mm5 |
| Secondary | see notes |
| MG | 2: 7.92 mm Besa MGs1 2: 7.92 mm Besa MG, coaxial, hull9 0.303" Bren Light MG, AA9 2" Bomb thrower, turret roof9 |
| Side arms | Verey pistol9 Thompson machine carbine9 |
| Quantity | |
| Main | 849 |
| Secondary | |
| MG | 6,975 Besa: 9,4509 Bren: 6009 2" Bomb: 309 |
| Side arms | Verey: 209 Thompson: 4609 |
| Armor Thickness (mm) | 16 - 1024,5 163, 1023,7 |
| Hull Front, Upper | 88@20°9 102 101@4° |
| Hull Front, Lower | 38@70°9 89@25° |
| Hull Sides, Upper | 76@0°9 |
| Hull Sides, Lower | |
| Hull Rear | 50@0°9 64@0° |
| Hull Top | 16@90°9 19@90° |
| Hull Bottom | 16 19@90° 20@90°9 |
| Turret Front | 88@0°9 89@0° |
| Turret Sides | 76@0°9 89@0° |
| Turret Rear | 89@0° |
| Turret Top | |
| Engine (Make / Model) | Bedford Twin3 Bedford4,7 Bedford Twin-Six9 |
| Cooling | |
| Cylinders | 2x67 63, 129 |
| Net HP | 3503,4,7 350@2,200 rpm9 |
| Transmission | Merritt-Brown 4 speed, 4 forward, 1 reverse9 |
| Steering | |
| Starter | |
| Electrical system | |
| Ignition | |
| Fuel type | |
| Octane | |
| Capacity | 182.5 gallons9 864 liters |
| Fuel consumption - Road | |
| Fuel consumption - Cross country | |
| Power to Weight Ratio | 8.33 hp/ton9 |
| Performance | |
| Traverse | 360°3 360°, electric (24°/sec)9 |
| Max speed | 14.9 mph1, 15 mph7, 15.5 mph3,4,9 25 kph, 24 kph1 |
| Cross country speed | 8 mph3 13 kph |
| Road radius | 259 km, 140 km1 88 miles1, 90 miles3, 120 miles9 |
| Cross country radius | |
| Turning Radius | |
| Elevation Limits | -12.5° to +20°3,9 |
| Fording depth | 0.8 m 3' 4" unprepared3,9 |
| Trench crossing | 2.8 m 10'3,9 |
| Vertical Obstacle | 1.13 m 2' 6"3,9 |
| Climbing ability | |
| Suspension (Type) | Sprung bogies.3 Vertical coil springs9 |
| Wheels each side | 119 |
| Return rollers each side | |
| Tracks (Type) | |
| Length | |
| Width | 14"3,9 |
| Number of links | |
| Pitch | |
| Tire tread | |
| Tire diameter | 10"9 |
| Track centers/tread | 12' 6"3,9 |
Sources:
- The Encyclopedia of Tanks and Armored Fighting Vehicles - The Comprehensive Guide to Over 900 Armored Fighting Vehicles From 1915 to the Present Day, General Editor: Christopher F. Foss, 2002
- Panzer Truppen The Complete Guide to the Creation and Combat Employment of Germany's Tank Force 1943-1945, Thomas L. Jentz, 1996
- British and American Tanks of World War Two, The Complete Illustrated History of British, American, and Commonwealth Tanks 1933-1945, Peter Chamberlain and Chris Ellis, 1969
- Tanks of the World, 1915-1945, Peter Chamberlain, Chris Ellis, 1972
- The Encyclopedia of Weapons of World War II, Chris Bishop, 1998
- -
- Tanks of World War II, Duncan Crow, 1979
- Battle Winning Tanks, Aircraft & Warships of World War II, David Miller, 2000
- AFV 1: Churchill, B.I.T. Mk IV, B.T. White
- Tank Data, Aberdeen Proving Grounds Series, 1968?
- Tank Data 2, Aberdeen Proving Grounds Series, E. J. Hoffschmidt and W. H. Tantum IV, 1969
- The Illustrated Guide to Tanks of the World, George Forty, 2006
- AFV 1, Churchill, B.I.T. Mk IV, B.T. White
