Comparing: O-Ho vs. KV-5

The O-Ho was a further development of the idea of a superheavy tank with improved armor protection. The vehicle had a good set of guns that allowed for all-angle fire. The project was discontinued due to the war ending. No finished prototypes were built and the vehicle never saw action.

Development began in June 1941 at the Leningrad Kirov Plant and was completed by August, but plans were interrupted due to the complicated situation on the front. The KV-5 was to utilize some components of the KV-1. A new turret was designed, incorporating the 107-mm ZIS-6 gun. Two roadwheels and a single support roller were to be added on each side. A new 1,200 h.p. diesel engine was being developed for the vehicle, however it was not completed in time and was replaced with two V-2K engines.