The Centurion Tank was a British tank developed in 1943 which continued in production until 1962. It was originally armed with a 17-pounder main gun, then with a 20-pounder gun and finally with the 105 mm L7A2 gun. It carried a crew of 4, and was protected by armour plate 152 mm thick on the turret front, 76 to 118 mm thick on the hull front depending upon the model and 38 mm to 51 mm thick on the sides and rear. The Centurion tank had a top speed of 22 mph and a range of 190 km. In the 1960's the Centurion tank was replaced by the Chieftan Tank as Britain's Main Battle Tank