HSwMS Neptun (Nep)

HSwMS Neptun (Nep) is the second of three Näcken-class submarines, built to operate in the Baltic. Neptun entered service in December 1980. The next year she was involved an international incident when the Soviet submarine U 137 ran aground outside Karlskrona.

For other ships with the same name, see HSwMS Neptun.
Neptun under tow in 2011
History
Sweden
Name: Neptun
Builder: Kockums, Malmö
Laid down: March 1974[1]
Launched: 13 August 1979[1]
Commissioned: 5 December 1980[1]
Decommissioned: 1998
Status: Museum ship
General characteristics [2]
Class and type: Näcken-class
Displacement:
  • 980 long tons (1,000 t) surfaced
  • 1,150 long tons (1,170 t) submerged
Length:
  • 49.5 m (162 ft 5 in) oa
  • 44.0 m (144 ft 4 in) waterline
Beam: 5.7 m (18 ft 8 in)
Draught: 18 m (59 ft 1 in)
Propulsion:
  • 1 × MTU 16V652 diesel engine
  • 2,100 bhp (1,600 kW)
  • 1 × Jeumont-Schneider Electric motor 1,540 hp (1,150 kW)
Speed:
  • 10 kn (19 km/h; 12 mph) surfaced[3]
  • 20 kn (37 km/h; 23 mph) submerged[3]
Complement: 19
Armament:
  • 6 × 533 mm torpedo tubes
  • 2 × 400 mm torpedo tubes

The Näcken class were among the first Swedish submarines to have onboard computers. Her task in the eventuality of war would have been to attack enemy shipping and surveillance duties.

Neptun was decommissioned in 1998 and laid up in Karlskrona. In 2008 she was donated to the Naval Museum Marinmuseum of Karlskrona, Sweden, where she is after restoration on display since 2014.[4]

Notes
  1. Moore 1985, p. 454.
  2. Gardiner and Chumbley 1995, p. 447.
  3. Baker 1998, p. 820.
  4. "Neptun – a real submarine!". Karlskrona Marinmuseum. Retrieved 7 March 2014.

References
  • Baker, A.D. (1998). The Naval Institute Guide to Combat Fleets of the World 1998–1999. Annapolis, Maryland, USA: Naval Institute Press. ISBN 1-55750-111-4.
  • Gardiner, Robert; Chumbley, Stephen, eds. (1995). Conway's All The World's Fighting Ships 1947–1995. Annapolis, Maryland, USA: Naval Institute Press. ISBN 1-55750-132-7.
  • Moore, John (1985). Jane's Fighting Ships 1985–86. London: Jane's Yearbooks. ISBN 0 7106-0814-4.
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