Cruiser Mk I (A9) General Details Specifications Manufacture Date(s) 1938 Quantity Produced 125 Weight unknown Crew 6 M.G's small 3 M.G's large(>10mm) 0 Length 5.92 mtr Width 2.56 mtr Height 2.56 mtr Engine Details/Performance Max Road Speed 25 mph Max Cross Country Speed 15 mph Range Road 150 miles Range Cross Country 0 miles Fuel Type Petrol Fuel Capacity 86 gal Horse Power 150 hp Power/Weight unknown General Information The Cruiser tank MkI was designed by Vickers in 1936 to provide a fast cruiser type tank which could move fast with a small gun. The rear AEC 150hp enginedrove the track over 3 top idlers, around the front idler and back via 2 distinctive 3 wheel bogies. The turret had power traverse with a 2pdr A/T gun. The vehicle also had two auxillliary machine gun turrets housing Vickers machine guns. Armour Details Turret Front 14mm@20°(15mm) Side 12mm@20°(13mm) Rear 14mm@20°(15mm) Top 4mm@90°(4 mm) Superstructure Front 14mm@45°(20mm) Side 10mm@0°(10mm) Rear 10mm@0°(10mm) Top 5mm@90°(5 mm) Hull Front 14mm@30°(16mm) Side 10mm@0°(10mm) Rear 10mm@0°(10mm) Top 5mm@90°(5 mm) Armour (x)mm @ (y)° (Effective mm @ 0°) Effective Armour - Maximum 16 mm - Minimum 5 mm Weapon Details Ordnance Q.F. 2pdr History Used both as an Anti Tank gun and as a Tank gun the 2pdr was first used by the Belgians in 1939 with the majority of the British guns were captured by the Germans at Dunkirk and given their designation of 4.0 cm Pak 192(e) or 4.0 cm Pak 154(b). Manufactured 1936 - 1944 Calibre 40mm Length L/50 Rate of Fire 22rpm Rounds Carried  100   Ammunition Details Name/Id Calibre Weight MVelocity Quoted Penetration   AP(AP) 40mm 1.08Kg   792M/Sec 53mm@455m Range(Mtr) 100 200 400 800 1200 1600 2000 2400 Flight Time(Secs) 0.13 0.27 0.56 1.26 2.17 3.37 5.06 7.58 Penetration(mm) 58 56 53 47 41 35 29 23 Hit Probability(%) 98 98 98 93 60 25 6 2

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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