|Engine Power (hp)||550|
|Speed Limit (km/h)||40|
|Standard Shell Penetration (mm)||149 - 201|
|Standard Shell Damage||300 - 500|
|Rate of Fire (rounds/min)||3.9|
From the mid-1940s to the 1950s, Soviet engineers attempted to modernize the IS-2 tank. The IS-2U variant, developed in November 1944, was conceived to have a reinforced frontal hull with a plate configuration resembling that of the IS-3. In the mid-1950s the design project was passed to China and became the basis for further Chinese tank development.