BT-42 is a Finnish self-propelled vehicle from the Other Light War. The production of these cars began in 1942, and after the river (1943) they began to appear on the line. Boyova's machine capacity could reach 15 tons. Driven by one 12-cylinder Mikulin M-17 engine with a torque of up to 500 hp. The main design consisted of a 114-mm howitzer. During the Winter War of 1939-1940, the Finnish army buried a number of Radian BT-7 tanks. On the basis of these transport methods, Finnish military potters decided to create a self-propelled power plant, thereby stimulating power consumption. Thus, the hull and many components of the BT-7 were saved, but a completely new frame was built to accommodate a 4.5-inch 114-mm howitzer, imported from Great Britain before 1939. Work on the new machine went very quickly and in 1943 the machine went into production. Vehicles of this type were mainly used during the battles against the Radian army in 1944 and for the defense of the town of Viborg in the same year.
