Italy
Carro Armato M13/40 Medium Tank

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The Carro Armato M13/40 Medium Tank based on the existing fully tracked M13/40 and was in use from 1940.

General Details Specifications Operational Date(s) 1940 Quantity Produced 1960 Weight 14 tonne Crew 4 M.G's small 2 M.G's large(>10mm) n/a Length 4.98 mtr Width 2.26 mtr Height 2.40 mtr Engine Details/Performance Max Road Speed 21 mph Max Cross Country Speed 11 mph Range Road 1200 miles Range Cross Country 480 miles Fuel Type Diesel Fuel Capacity unknown Horse Power 125 hp Power/Weight 8 hp/tonne General Information The Carro Armato M13/40 Medium Tank based on the existing fully tracked M13/40 and was in use from 1940. The vehicle was powered by FIAT-SPA 'SPA 8 T M40' diesel powerplant producing 125 HP which could drive the vehicle on roads at up to 21 mph with a range of about 1200 miles before refuelling. Its cross country performance was good providing a max speed of about 11 mph and a range of about 480 miles. It was armed with 2 light machine guns. Its main armament consisted of an Cannone contracarro da 47/35 M35 L/40 which could penetrate 67 mm of flat plate at 400 metres The Carro Armato M13/40 was a new tank based on the M11/39 but larger. Armour Details Turret Front 37mm @ 16° (38mm) Side 25mm @ 22° (27mm) Rear 25mm @ 22° (27mm) Top 14mm @ 85° (14mm) Superstructure Front 30mm @ 11° (31mm) Side 25mm @ 9° (25mm) Rear 25mm @ 0° (25mm) Top 14mm @ 90° (14mm) Hull Front 30mm @ 45° (42mm) Side 25mm @ 0° (25mm) Rear 25mm @ 20° (27mm) Top 6mm @ 90° (6mm) Armour (x)mm @ (y)° (Effective mm @ 0°) Effective Armour - Maximum 42 mm - Minimum 6 mm

Weapon Details Cannone contracarro da 47/35 M35 L/40 (Machine Gun) History This was the Austrian 4.7cm Bohler L/39 manufactured under licence, and was used in all theatres till Italy surrendered, this version was modified to use a longer barrel and cartridge and was primarily a tank gun. Manufactured 1935 - 1943 Calibre 47mm Length L/40   Ammunition Details Name/Id Calibre Weight MVelocity Explosive Content 47 x 328 mm R L/40 (AP Armor Piercing) 47mm 1.6Kg 820M/Sec Quoted Penetration 70mm @ 100mtr/30° ( ≈ 80mm/0°) Range(Mtr) 100 200 400 800 1200 1600 2000 2400 Flight Time(Secs) 0.12 0.25 0.53 1.18 1.97 2.96 4.25 5.98 Penetration(mm@30°) 71 65 58 48 39 32 25 19 Penetration(mm@0°) 83 76 67 56 46 37 29 22 Hit Probability(%) 98 98 98 96 69 29 15 3 Bohler HE (HE High Explosive) 47mm 2.37Kg 250M/Sec ≈0.356Kg explosive Maximum Range 7000 Mtr Range(Mtr) 100 200 400 800 1200 1600 2000 2400 Flight Time(Secs) 0.41 0.84 1.75 3.86 6.45 9.72 13.94 19.68 Direct Fire Range(Mtr) 100 200 400 800 1200 1600 2000 2400 Flight Time(Secs) 0.41 0.84 1.75 3.86 6.45 9.72 13.94 19.68 Hit Probability(%) 98 98 77 22 3 1 0 0 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. Bohler HEAT (HEAT High Explosive Anti-Tank) 47mm 2.37Kg 250M/Sec Quoted Penetration 55mm @ 0mtr/0° Range(Mtr) 100 200 400 800 1200 1600 2000 2400 Flight Time(Secs) 0.41 0.84 1.75 3.86 6.45 9.72 Penetration(mm@30°) 55 55 55 55 55 55 Penetration(mm@0°) 55 55 55 55 55 55 Hit Probability(%) 98 98 77 22 3 1

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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Page Last Updated: 2021-08-07 08:47:18