| Names | SM1 - 4 | 
| Builders | 
 | 
| Commissioned | 1939: SM1, 2 1940: SM3, 4 | 
| Losses | SM3 (5.10.1944) | 
| Transfers | none | 
| Discarding | 1951 - 1954: SM1, 2, 4 | 
| Displacement standard, t | 20 | 
| Displacement full, t | ? | 
| Length, m | 18.0 | 
| Breadth, m | 3.80 | 
| Draught, m | 1.70 | 
| No of shafts | 1 | 
| Machinery | 1 Wickström engine | 
| Power, h. p. | 80 | 
| Max speed, kts | 9 | 
| Fuel, t | petrol | 
| Endurance, nm(kts) | |
| Armament | 1 x 1 - 20/60 Madsen, mechanical minesweeping gear | 
| Complement | 
 | 
Project history: The Finnish-built minesweeping boats.
Modernizations: None.
Naval service: No significant events.

SM3
© Ivan Gogin, 2009-15