Comparing: Heavy Tank No. VI vs. T-150

In 1943, the Japanese ambassador to Germany attended Henschel's field trials of the Tiger. After that, the company was ordered to transfer all tank documentation to Japan. One disassembled Tiger was sent to Bordeaux on October 14, 1943, to be delivered to Japan by submarine. However, the vehicle was never delivered, and the Japanese were never able to establish their own production of Tigers. This enterprise cost 645,000 Reichsmarks to Japan, while the original cost was 300,000 Reichsmarks.

The T-150 was a further development of the KV-1. The vehicle weighed as much as 50 tons. The T-150 underwent trials in the first half of 1941. A prototype fought in the battles for Leningrad, and became a basis for a modification of the KV-1 with reinforced armor.