Comparing: SU-101 vs. T28 Prototype

In 1944 the Construction Bureau of the Ural Heavy Machinery Plant developed the SU-101 with the D-10S gun and the SU-102 with the D-25S gun. Both vehicles were designated as Uralmash-1. Prototypes were manufactured in April 1945. The vehicles never entered mass production nor saw service.

Early prototype of a heavy tank designed for breaking through fortifications of the German Siegfried Line. Existed only in blueprints, prepared under the program for developing heavy vehicles that was initiated in September 1943.