2S31 Vena

2S31 Vena
2S31 Vena
Type	Self-propelled mortar
Place of origin	Russia
Service history
In service	2014–present
Production history
Designer	Motovilikha Plants
Designed	1980–2007
Manufacturer	Motovilikha Plants
Produced	1996
Specifications
Mass	19.1 t (18.8 long tons; 21.1 short tons)
Length	7 m (23 ft)
Width	3 m (9.8 ft)
Height	3 m (9.8 ft)
Crew	4
Elevation	-4° to +80°
Traverse	360°
Rate of fire	8-10 rounds per minute
Maximum firing range	7.2–13 km (4.5–8.1 mi)
Main; armament	2A80 120 mm mortar
Secondary; armament	7.62 mm PKTM machine gun
Engine	Diesel UTD-29; 340 kW (460 hp)
Power/weight	19.4 kW (26.0 hp) per ton
Suspension	Individual torsion bar
Operational; range	600 km (370 mi)
Maximum speed	70 km/h (43 mph)

The 2S31 Vena (Russian: "2С31 Вена") is a Russian amphibious self-propelled 120 mm mortar system. "2S31" is its GRAU designation.

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The 2S31 consists of a 120mm 2A80 rifled gun-mortar mounted on the chassis of the BMP-3 infantry combat vehicle.^[1] It was developed by Joint Stock Venture "Plants of Motovilikha" (Russian: ОАО "Мотовилихинские заводы"). The 2S31's turret is equipped with digital automated fire control system, navigation system, and optical/electronic reconnaissance and target acquisition system. Its 2A80 gun-mortar is capable of launching a high-explosive mortar projectile with a maximum range of 18,000 m (20,000 yd).^[1] The vehicle is protected by a welded aluminium hull to protect against small arms fire and shrapnel.^[2] It can also fire armour-piercing projectiles that can penetrate up to 650 mm (26 in) of steel plate at ranges of up to 1 km (0.62 mi). A separate sighting system is used when engaging in direct fire mode.^[3]

Reportedly first combat use of Vena was during Second Nagorno-Karabakh War.^[4]

In September 2023, Vena appeared in Vesti program during the report about Russian troops fighting near Bakhmut, confirming its use during Russian invasion of Ukraine.^[5]