The Northern Fleet has one active mini-submarine of this class in service called AS-12.
| Length: | 40 m | Displacement: | 600/1 100 tons |
|---|---|---|---|
| Beam: | 6 m | Maximum Depth: | 1 000 m |
| Draught: | 5.1 m | Crew: | 20 |
| Speed: | 30 knots | ||
One pressurised water reactor, model unknown. Power capacity from the turbines is 10 000 hp.
The Project 10831 submarine was built in Severodvinsk.