T-100 Tank
The T-100 was a Soviet twin-turreted heavy tank prototype, designed in 1938–39 as a possible replacement for the T-35. The T-100 was designed by N. Barykov’s OKMO design team at S.M. Kirov Factory No. 185 in Leningrad. The T-100 was originally conceived with three turrets and was eventually built with two. It was in competition with a similar design – the SMK – but neither were adopted and instead a single turret version on the SMK was ordered as the KV-1. All three prototypes were tested at the same time in the Battle of Summa.