SU-100Y (Soviet Propelled-Gun)
The SU-100Y was a prototype heavy self-propelled gun developed by the Soviet Union in the late 1930s. This vehicle was based on the chassis of the experimental T-100 tank, originally designed during the Winter War against Finland. The SU-100Y was notable for its enormous size and large, angular structure, built to carry heavy armament capable of destroying enemy fortifications. Weighing over 60 tons, it was powered by an 890-horsepower GAM-34BT engine, allowing it to reach a speed of approximately 32 km/h on roads. The primary purpose of the SU-100Y was to serve as a heavy assault vehicle intended to destroy enemy bunkers, fortified positions, and static defenses. During the Winter War, the Red Army encountered significant difficulties in breaking through Finnish defensive lines, particularly the Mannerheim Line. Because of this, Soviet engineers sought to develop vehicles with large-caliber armament that could clear a path for troops and support attacks against heavily fortified...