The Semovente da 75/18 su scafo di carro M42 was a Self Propelled Anti Tank vehicle designed in 1941, manufactured by Fiat-Ansaldo, it was based on the fully tracked M14/41 chassis and was in use from 1942 to 1945. General Details (SP Anti Tank) Specifications Operational Date(s) 1942 - 1945 Quantity Produced 200 Weight 13 tonne Crew 3 M.G's small n/a M.G's large(>10mm) n/a Length 3.85 mtr Width 1.89 mtr Height 1.77 mtr Engine Details/Performance Max Road Speed 20 mph Max Cross Country Speed 11 mph Range Road 120 miles Range Cross Country 48 miles Fuel Type Diesel Fuel Capacity unknown Horse Power 145 hp Power/Weight 11 hp/tonne General Information The Semovente da 75/18 su scafo di carro M42 was a Self Propelled Anti Tank vehicle designed in 1941, manufactured by Fiat-Ansaldo, it was based on the fully tracked M14/41 chassis and was in use from 1942 to 1945. The vehicle was powered by FIAT-SPA 'SPA 15 T M41 V8' diesel powerplant producing 145 HP which could drive the vehicle on roads at up to 20 mph with a range of about 120 miles before refuelling. Its cross country performance was good providing a max speed of about 11 mph and a range of about 48 miles. Its main armament consisted of an Cannone contracarro da 75/18 M35 which could penetrate 41.5 mm of flat plate at 800 metres. Armour Details Turret Front n/a Side n/a Rear n/a Top n/a Superstructure Front 30mm @ 15° (31mm) Side 15mm @ 15° (16mm) Rear 15mm @ 15° (16mm) Top 6mm @ 85° (6mm) Hull Front 30mm @ 15° (31mm) Side 15mm @ 15° (16mm) Rear 15mm @ 15° (16mm) Top 6mm @ 85° (6mm) Armour (x)mm @ (y)° (Effective mm @ 0°) Effective Armour - Maximum 31 mm - Minimum 6 mm Weapon Details Cannone contracarro da 75/18 M35 Calibre 75mm Ammunition Details Name/Id Calibre Weight MVelocity Explosive Content AP (AP Armor Piercing) 75mm 6.35Kg 435M/Sec Range(Mtr) 100 200 400 800 1200 1600 2000 2400 Flight Time(Secs) 0.23 0.48 0.99 2.11 3.36 4.73 6.22 7.81 Penetration(mm@30°) 51 49 44 35 29 23 19 15 Penetration(mm@0°) 60 57 51 42 34 27 22 18 Hit Probability(%) 93 93 87 52 23 8 3 3 About Penetration Figures All penetration figures in this database are calculated to a common standard based on German WWII testing criteria (complete penetration with functioning fuze). This allows direct comparison between all nations' guns. Original national test figures would be higher for some nations due to different criteria: German: 1.00? (baseline - strictest) British: 1.02? (slightly looser) American: 1.05? (50% mass through plate) Soviet: 1.10? (75% mass through plate) For example, a Soviet gun showing 159mm here would be published as ~175mm in Soviet documents, and a German gun showing 120mm would be published as 120mm in German documents. The 159mm figure is directly comparable to the German 120mm - the Soviet gun really was more powerful. National Testing Standards German: 1.00? - Complete penetration, fuze functions (strictest) British: 1.02? - Complete penetration American: 1.05? - 50% of shell mass through plate Soviet: 1.10? - 75% of shell mass through plate All database figures are normalized to German standard for direct comparison. Multiply by the factor above to see original national test figures.

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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