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HSwMS Sjölejonet (Sle)

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HSwMS Sjölejonet being launched on 29 June 1967
History
Sweden
NameSjölejonet
NamesakeSjölejonet
Ordered1965
BuilderKarlskrona
Launched29 June 1967
Commissioned16 December 1968
Decommissioned1997
Motto
  • In omnia paratus
  • (Ready for anything)
Nickname(s)Sle
FateSold to Singapore in 1997
Singapore
NameConqueror
NamesakeConqueror
Acquired28 May 1999
Commissioned26 June 2004
HomeportChangi
StatusActive
General characteristics
Class and type
Displacement
  • 1,130 t (1,112 long tons) surfaced
  • 1,210 t (1,191 long tons) submerged
Length50.5 m (165 ft 8 in)
Beam6.1 m (20 ft 0 in)
Draught5.8 m (19 ft 0 in)
Propulsion
  • 2 × Hedemora Diesel generators
  • 1 × electric motor
  • 1 shaft
Speed20 knots (37 km/h; 23 mph)
Complement25 officers and enlisted
Armament
  • 4 × 533 mm (21 in) torpedo tubes
  • 2 × 400 mm (16 in) torpedo tubes

HSwMS Sjölejonet (Sle), (Sw. meaning sea lion), was the second ship of the Swedish submarine class Sjöormen, project name A11.[1]

Development

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The planning of the class included a number of different AIP solutions including nuclear propulsion. However, the ships where finally completed with for the time extremely large batteries. The ship was a single-hulled submarine, with hull shape influenced by the American experimental submarine USS Albacore. The hull was covered with rubber tiles to reduce the acoustic signature (anechoic tiles), at this time a pioneer technology. The Sjöormen class also pioneered the use of an x-shaped (as opposed to cross-shaped) rudder as a standard (as opposed to experimental) feature.[2]

Service in Sweden

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The submarine served in the Swedish Navy for almost 30 years and was then sold to Singapore in 1997 together with its four sister ships.

Service in Singapore

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HSwMS Sjöbjörnen was renamed RSS Conqueror and Singapore reacquired the boat on 28 May 1999. She was commissioned into the Republic of Singapore Navy on 26 June 2004 after a major refit and remains in active service as of December 2022.

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References

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  1. ^ "HMS Sjöbjörnen (Sbj)", Wikipedia (in Swedish), 2019-09-18, retrieved 2020-07-29
  2. ^ "CHALLENGER CLASS SUBMARINE". Ministry of Defense Singapore. Retrieved 29 July 2020.