"Forel"
| Displacement: |
|
| Length: | 13.1 metres (43 ft) |
| Beam: | 2.1 metres (6.9 ft) |
| Draft: | 2.1 metres (6.9 ft) |
| Propulsion: | 1 electric motor, 1 shaft (60 shp) |
| Speed: | 5.5 knots (10.2 km/h; 6.3 mph) |
| Range: | 25 nm at 4 knots submerged |
| Test depth: | 30 metres (98 ft) |
| Complement: | 4 |
| Armament: | 2 x 18-inch (457 mm) external torpedo tubes (bow) |
3척 생산.
정찰용으로 사용예정.
