| 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.