Neptun-class submarine

Class overview
Name:	Neptun-class
Builders:	Kockums
Operators:	Swedish Navy
Preceded by:	Sjölejonet class
Succeeded by:	Hajen class
Built:	1942-43
Building:	1943-1966
Planned:	3
Completed:	3
Retired:	3
General characteristics
Type:	Submarine
Displacement:	550 tonnes (surfaced) 730 tons (submerged)
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:	2 shaft diesel electric 2 MAN diesels 1,800 hp (1,300 kW) 2 electric motors 1,000 hp (750 kW)
Speed:	15 kn (28 km/h; 17 mph) surfaced 10 kn (19 km/h; 12 mph) submerged
Complement:	35
Armament:	5 x 533 mm (21 in) torpedo tubes 1 x 40 mm (1.6 in) AA gun 1 x 20 mm (0.79 in) AA gun 20 mines

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: HMSwS Neptun, HMSwS Najad and HMSwS Nacken. The class was decommissioned in 1966.

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