|Engine Power (hp)||700|
|Speed Limit (km/h)||35|
|Standard Shell Penetration (mm)||191 - 259|
|Standard Shell Damage||315 - 525|
|Rate of Fire (rounds/min)||3.9|
A draft project, prepared during the development of the IS-6 heavy tank. The draft was completed by the end of 1944. Later, work on the IS-6 tank was stopped, and the development of the project was discontinued. The vehicle never entered service.