The B class submarines B-2, B-3 and B-4 at quay in Norway |
|
| Class overview | |
|---|---|
| Builders: | Karljohansvern Naval shipyard |
| Operators: | Royal Norwegian Navy |
| Preceded by: | Norwegian A class submarine |
| Succeeded by: | U class submarine |
| In service: | 1923 – 1946 |
| In commission: | 1 February 1923 |
| Completed: | HNoMS B-1, HNoMS B-2 HNoMS B-3, HNoMS B-4 HNoMS B-5, HNoMS B-6 |
| Active: | 6 |
| Lost: | 1 |
| General characteristics | |
| Displacement: | 365 tons surfaced 545 tons submerged |
| Length: | 51 m |
| Beam: | 5.3 m |
| Draught: | 3.5 m |
| Propulsion: | 2 x Sulzer 900 shp diesel engines/2 x 700 shp electric engines |
| Speed: | maximum 15 knots (27.8 km/h) surfaced maximum 8.9 knots (16.5 km/h) dived |
| Range: | 2,900 nautical miles (5,370.8 km) at 9 knots (16.5 km/h) surfaced 150 nautical miles (277.8 km) submerged at 3 knots (5.5 km/h) |
| Complement: | 23(? officers and ? ratings) |
| Armament: | Four 45 cm (17.7 inch) torpedo tubes 1 × 76 mm gun |
The B class submarines were a class of six vessels of the US Holland type built on licence at Karljohansvern naval shipyard in Norway from 1922 to 1929 and deployed by the Royal Norwegian Navy.