Comparing: SU-100Y vs. AT 8

Developed on the basis of the T-100 heavy tank. The vehicle was intended to neutralize enemy pillboxes and destroy enemy vehicles. The only prototype was manufactured in March 1940. The vehicle never entered mass production.

The vehicle was conceived as a breakthrough tank. The design project evolved from the AT-7 project, and both projects were submitted at the same time. No prototypes were built because the A39 Tortoise was preferred.