The T-64 was a main battle tank fielded by the Soviet Army during the Cold War. It was in service between 1966 and 2002. The T-64 was armed with a 125mm D-81 smooth-bore gun, a 7.62mm coaxial machine gun, and a 12.7mm machine gun mounted on the turret. The armor of this Soviet tank consisted of steel plates and layers of special glass (ceramic) in between, which protected it from 14.7mm armor piercing ammunition and anti-tank grenade. The T-64 weighed 39 tons and was powered by 5DTF 5-cylinder diesel engine, that delivered 700 hp. It had a maximum speed of 38 miles per hour (61 km/h) and a range of 600 km. More than 13,000 T-64 tanks were built in different versions.