Is-23 Heavy Tank

A heavy tank developed by the Soviet Union after World War II, intended as a successor to the IS-3, but never reached production.

Is-24 Heavy Tank

A heavy tank developed by the Soviet Union after World War II, intended as a successor to the IS-3, but never reached production.

Is-25 Heavy Tank

A heavy tank developed by the Soviet Union after World War II, intended as a successor to the IS-3, but never reached production.

Is-9 Heavy Tank

A heavy tank developed by the Soviet Union after World War II, intended as a successor to the IS-3, but never reached production.

Is-26 Heavy Tank

A heavy tank developed by the Soviet Union after World War II, intended as a successor to the IS-3, but never reached production.

Is-11 Heavy Tank

A heavy tank developed by the Soviet Union after World War II, intended as a successor to the IS-3, but never reached production.

Is-27 Heavy Tank

A heavy tank developed by the Soviet Union after World War II, intended as a successor to the IS-3, but never reached production.

Is-12 Heavy Tank

A heavy tank developed by the Soviet Union after World War II, intended as a successor to the IS-3, but never reached production.

Is-28 Heavy Tank

A heavy tank developed by the Soviet Union after World War II, intended as a successor to the IS-3, but never reached production.

Is-13 Heavy Tank

A heavy tank developed by the Soviet Union after World War II, intended as a successor to the IS-3, but never reached production.