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 The B-class submarines B-2, B-3 and B-4 at quay in Norway
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| Class overview | |
|---|---|
| Builders | Karljohansvern Naval shipyard |
| Operators |  Royal Norwegian Navy |
| Preceded by | A class |
| Succeeded by | U class |
| In service | 1923 – 1946 |
| In commission | 1 February 1923 |
| Completed | 6 |
| Lost | 1 |
| Retired | 5 |
| General characteristics | |
| Type | Submarine |
| Displacement |
|
| Length | 51 m (167 ft) |
| Beam | 5.3 m (17 ft) |
| Draught | 3.5 m (11 ft) |
| Propulsion |
|
| Speed |
|
| Range |
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| Complement | 23 |
| Armament |
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The B-class submarines were a class of six vessels of the US L class built on licence at Karljohansvern naval shipyard in Horten, Norway from 1922 to 1929 and deployed by the Royal Norwegian Navy.