The 57 mm Gun Motor Carriage T48 was a self propelled artillery vehicle , 962 of which were used by the americans between 1942 and 1945. The vehicle was manned by a crew of 5 and was 2.18 metres wide, 6.46 metres long, 2.15 metres high and weighed 8.48 tonnes. Powered by a 147hp petrol engine the 57 mm Gun Motor Carriage T48 was capable of a road speed of 45mph and a cross country speed of 35mph. Based on the sp gun chassis, the vehicle was armed with a 57mm Antitank Gun M1 with a muzzle velocity of 900m/sec which was capable of penetrating 75mm of armour at 800metres

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