Tiam is an Iranian main battle tank optimized from the Sabalan with a 105 mm gun. The tank was announced on April 13, 2016, and has a similarity to the Type 59 turret, with a Sabalan chassis, which is an Iranian modernized version of the M47M Patton. Iran stated that it possessed a brand new turret housing a smoothbore 105 mm cannon. Iran said it had a new fire control system, and new communication equipment, sideskirts and other improvements and cost less than half of the price of the Zulfiqar main battle tank.