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.