Britain Inf Tank Mk II C.S. (Matilda IV C.S.)

Tweet The Inf Tank Mk II C.S. was designed in 1937 based on the existing fully tracked Matilda and was in use from 1940 to 1943. General Details Specifications Operational Date(s) 1940 - 1943 Quantity Produced 0 Weight 26.5 tonne Crew 4 M.G's small 1 M.G's large(>10mm) n/a Length 5.69 mtr Width 2.62 mtr Height 2.46 mtr Engine Details/Performance Max Road Speed 15 mph Max Cross Country Speed 8 mph Range Road 101 miles Range Cross Country 62 miles Fuel Type Diesel Fuel Capacity 56 gal Horse Power 190 hp Power/Weight 7 hp/tonne General Information The Inf Tank Mk II C.S. was designed in 1937 based on the existing fully tracked Matilda and was in use from 1940 to 1943. The vehicle was powered by Leyland 'Diesel 190HP' diesel powerplant producing 190 HP which could drive the vehicle on roads at up to 15 mph with a range of about 101 miles before refuelling. Its cross country performance was adequate providing a max speed of about 8 mph and a range of about 62 miles. It was armed with 1 light machine gun. Its main armament consisted of an Ordnance Q.F. 3inch Howitzer which could penetrate 113 mm of flat plate at 100 metres The Matilda IV CS was a complete new design to replace the Matilda I Infantry tank, which had been superceeded by advances in tank designs. The turret was of a shaped design which held the 3 inch howitzer. This version had a few minor improvements over the Matilda III CS. Armour Details Turret Front 75mm @ 11° (76mm) Side 75mm @ 0° (75mm) Rear 75mm @ 0° (75mm) Top 20mm @ 90° (20mm) Superstructure Front 48mm @ 67° (123mm) Side 70mm @ 30° (81mm) Rear 55mm @ 25° (61mm) Top 20mm @ 90° (20mm) Hull Front 78mm @ 10° (79mm) Side 65mm @ 0° (65mm) Rear 55mm @ 25° (61mm) Top 20mm @ 90° (20mm) Armour (x)mm @ (y)° (Effective mm @ 0°) Effective Armour - Maximum 123 mm - Minimum 20 mm Weapon Details Ordnance Q.F. 3inch Howitzer (Field Gun) Manufactured unknown - 1945 Calibre 76.20mm Ammunition Details Name/Id Calibre Weight MVelocity Explosive Content 3 inch howitzer AP (HE High Explosive) 76.20mm 6.3Kg 650M/Sec 0.600Kg explosive Range(Mtr) 1000 2000 3000 4000 5000 6000 7000 8000 Flight Time(Secs) 1.77 4.17 7.61 12.96 22.39 43.45 132.43 Direct Fire Range(Mtr) 100 200 400 800 1200 1600 2000 2400 Flight Time(Secs) 0.16 0.32 0.65 1.38 2.19 3.12 4.17 5.39 Hit Probability(%) 98 98 98 90 60 25 15 6 Blast/Fragmentation Effects Burst radius Infantry in open 99% kill 3 mtr Burst radius Infantry in open 66% kill 6 mtr Burst radius Infantry in open 33% kill 15 mtr  Armour Penetration inc roof at 1 mtr 1 mm An explosion within 3 mtr of infantry in the open will cause 99% casualties - lethal. An explosion within 6 mtr of infantry in the open will cause > 66% casualties and could damage some AFV's. An explosion within 15 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 1 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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