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Class overview
Builders	Kockums
Operators	Swedish Navy,  Royal Danish Navy
Preceded by	Sjöormen
Succeeded by	Västergötland
Planned	3
Completed	3
Laid up	3
General characteristics
Displacement	list error: <br /> list (help) 980 tonnes (Surfaced) 1150 tonnes (Submerged)
Length	44 m
Beam	5.7 m
Draught	5.5 m
Propulsion	list error: <br /> list (help) 1 shaft 2 × MTU diesel 1 × Jeumont-Schneider electric motor
Speed	list error: <br /> list (help) 20 Knots Surfaced 25 knots Submerged
Complement	19 (5 officers)
Sensors and processing systems	FAS
Armament	list error: <br /> list (help) 6 × 533mm Tubes 2 × 400mm Tubes bow mounted

The Näcken class submarines, also known as the A14 type, were built for the Swedish Navy in the late 1970s. The boats were authorised in 1972 and the programme was completed in 1981. All boats were built by Kockums in Karskrona. The boats had a teardrop hull and diving depth was 150m. Between 1987 and 1988 the Nacken was converted to Air Independent Propulsion (AIP) using a closed cycle Stirling engine. This technology increased underwater endurance to 14 days and has been adopted in subsequent Swedish submarines.

Ships

References

1. http://www.marinmuseum.se/Aktuellt/Ubatshallen.aspx

• Conway's All the World's Fighting Ships 1947-1995
• Kockums page
• Danish Naval history page

• Näcken class submarines
• Submarine classes