| Name | SB-921 | | Category | Special service ships - Seagoing tugs | | IMO | 8406640 | | Call sign | RMKK | | Flag | Russian Federation | | Year of built | 1985 | | Place of built | Finland | | Length, m | 69.20 | | Width, m | 15.40 | | Draught, m | 5.10 | | Deadweight, t | 810 | | Gross tonnage | 2,050 |
| | Home port | Kaliningrad | | Shipbuilder | Rauma Repola Uusikaupunki | | Main engine type | 2 x Diesel 6ChN40/46 | | Main engine power, h.p. | 7,000 | | Speed, kts | 16.0 | | Owner | Russian Government | | Operator | Russian Navy, Baltic Fleet | | Status | In Service |
|