Canada
Grizzly I

Tweet The Grizzly I based on the existing fully tracked Sherman and was in use from 1943. General Details Specifications Operational Date(s) 1943 Ordnance classification Quantity Produced 0 Weight unknown Crew 5 M.G's small 3 M.G's large(>10mm) n/a Length 6.18 mtr Width 2.66 mtr Height 3.02 mtr Engine Details/Performance Max Road Speed 24 mph Max Cross Country Speed 13 mph Range Road 120 miles Range Cross Country 48 miles Fuel Type Petrol Fuel Capacity 175 gal Horse Power 350 hp Power/Weight unknown General Information The Grizzly I based on the existing fully tracked Sherman and was in use from 1943. It was armed with 3 light machine guns. Its main armament consisted of a 75mm Gun M3 L/40 which could penetrate 92 mm of flat plate at 400 metres The Grizzly I Cruiser tank was the Canadian built version of the Sherman II M4A1, with modifications to include 2in smoke mortar and the No 19 wireless set. The vehicle transmission sprocket was at the front, the track passed under 6 road wheels on three bogies to the rear idler, then return via 3 return rollers. Armour Details Turret Front 75mm @ 0° (75mm) Side 50mm @ 0° (50mm) Rear 50mm @ 0° (50mm) Top 25mm @ 90° (25mm) Superstructure Front 50mm @ 45° (71mm) Side 50mm @ 0° (50mm) Rear 38mm @ 0° (38mm) Top 19mm @ 90° (19mm) Hull Front 40mm @ 45° (57mm) Side 40mm @ 0° (40mm) Rear 38mm @ 0° (38mm) Top 19mm @ 90° (19mm) Armour (x)mm @ (y)° (Effective mm @ 0°) Effective Armour - Maximum 75 mm - Minimum 19 mm Weapon Details 75mm Gun M3 L/40 Calibre 75mm Length L/40   Ammunition Details Name/Id Calibre Weight MVelocity Explosive Content AP (AP Armor Piercing) 75mm 6.32Kg 619M/Sec Quoted Penetration 70mm@500m Range(Mtr) 100 200 400 800 1200 1600 2000 2400 Flight Time(Secs) 0.16 0.33 0.68 1.45 2.31 3.29 4.41 5.7 Penetration(mm@30°) 95 88 79 70 61 52 45 38 Penetration(mm@0°) 110 102 92 81 71 61 52 44 Hit Probability(%) 98 98 98 88 54 25 15 3 HE M48 (HE High Explosive) 75mm 6.76Kg 625M/Sec 0.680Kg explosive Maximum Range 5000 Mtr Range(Mtr) 1000 2000 3000 4000 5000 6000 7000 8000 Flight Time(Secs) 1.85 4.36 8 13.72 24.01 48.06 168.4 Direct Fire Range(Mtr) 100 200 400 800 1200 1600 2000 2400 Flight Time(Secs) 0.16 0.33 0.68 1.43 2.29 3.25 4.36 5.65 Hit Probability(%) 98 98 98 88 57 25 15 3 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 16 mtr  Armour Penetration inc roof at 1 mtr 2 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 16 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 2 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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