Neptun-class submarine
| Class overview | |
|---|---|
| Name | Neptun-class | 
| Builders | Kockums | 
| Operators | Swedish Navy | 
| Preceded by | Sjölejonet class | 
| Succeeded by | Hajen class | 
| Built | 1942-43 | 
| Planned | 3 | 
| Completed | 3 | 
| Retired | 3 | 
| General characteristics | |
| Type | Submarine | 
| Displacement | 
 | 
| Length | 62.6 m (205 ft 5 in) | 
| Beam | 6.4 m (21 ft 0 in) | 
| Draught | 3.4 m (11 ft 2 in) | 
| Propulsion | 
 | 
| Speed | 
 | 
| Complement | 35 | 
| Armament | 
 | 
The Neptun-class submarine was a Swedish submarine class built by Kockums. The first submarine was launched in 1942 and a total of three submarines were built: HSwMS Neptun, HSwMS Najad and HSwMS Nacken. The class was decommissioned in 1966.