Bulgarian Tundzha self-propelled mortar system during an exercise in 2016.
Source: US Marine Corps -
© Public domain
The Tundzha is a self-propelled mortar of Bulgarian origin. It was developed as an alternative to towed heavy mortars with better mobility in the field and the ability to quickly relocate after firing.
The Tundzha combines the MT-LB tracked vehicle with a 120mm PM-43 or 2B11 mortar. The mortar is fitted in a special cradle with a large buffer on either side of the tube in order to reduce the recoil to a level that is bearable for the suspension of the MT-LB. Two large roof hatches are fitted. These allow for the mortar to be fired from the vehicle and to be lowered inside when not in use.
The Tundzha is fitted with a rearward facing muzzle loaded 120mm PM-43 mortar. This World War 2 era mortar has a maximum range of 5.7 km. A total of 58 shells are carried. Some sources indicate a total of 68 shells. The improved Tundzha-Sani carries the 120mm 2B11 mortar, with an increased range of 7.1 km.
The steel armor protects the crew of shell splinters and small arms fire. In the firing position the large roof hatches are open. When operating the mortar the crew is partially exposed.
The MT-LB chassis is known for its good cross country mobility. The tracked chassis has a very low ground pressure and low center of gravity. It is likely that the amphibious capability of the MT-LB chassis has been retained.
The Tundzha and Tundzha-Sani are in service with Bulgaria.
The Tundzha-Sani is armed with the longer range 2B11 Sani mortar.
The Tundzha is based on the chassis of the MT-LB tracked armored personnel carrier / prime mover.
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