2S31 Vena

   The 2S31 Vena (Vein) self-propelled mortar system was revealed in 1997. This vehicle is designed to support mechanized infantry formations. The 2S31 Vena has been offered for the export customers, however it received no orders to date.

   The 2S31 Vena is armed with a 120-mm rifled gun/mortar. It is a further development of the 2A51 gun, mounted on the 2S9 Nona-S. The 2S31 Vena has longer firing range comparing with the 2S3 Nona-S, despite using the same munitions. Maximum range of fire is 7.2 km with mortar mines and 13 km with gun shells. Various munitions can be used, including HEAT, HE-FRAG, smoke. Vena is compatible with all munitions, developed for the Soviet/Russian 120-mm combined gun/mortar systems. It can also fire any 120-mm mortar rounds. For precision attacks against armored targets the 2S31 uses Kitolov-2M precision guided munitions.

   Secondary armament consists of 7.62-mm remotely-controlled machine gun, mounted on top of the roof.

   Vena is fitted with advanced fire control system, which ensures a high first-round-hit probability. Fire control system includes reconnaissance, target acquisition, navigation and positioning systems.

   Armor of the 2S31 Vena provides protection against small arms fire and artillery shell splinters. Vehicle is fitted with NBC protection and automatic fire suppression systems.

   Vehicle has a crew of four, including commander, gunner, loader and driver.

   The 2S31 Vena is based on the much modified BMP-3 IFV chassis. Vehicle is powered by the UTD-29 diesel engine, developing 500 horsepower. The Vena is fully amphibious. On water it is propelled by two waterjets.