HSwMS Sjöormen (Sor)
| History | |
|---|---|
 Sweden | |
| Name: | Sjöormen |
| Builder: | Kockums |
| Laid down: | 1966 |
| Launched: | 25 January 1967 |
| Commissioned: | 31 July 1968 |
| Decommissioned: | 1997 |
| Fate: | Sold to Singapore in 1997 |
 Singapore | |
| Name: | RSS Centurion |
| Acquired: | 28 May 1999 |
| Commissioned: | 26 June 2004 |
| Status: | Active |
| General characteristics | |
| Class and type: | Sjöormen-class submarine |
| Displacement: |
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| Length: | 50.5 m (165 ft 8 in) |
| Beam: | 6.1 m (20 ft 0 in) |
| Draught: | 5.8 m (19 ft 0 in) |
| Propulsion: |
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| Speed: | 20 knots (23 mph; 37 km/h) |
| Complement: | 25 officers and enlisted |
| Armament: |
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HSwMS Sjöormen, Sw. meaning sea serpent, was the lead ship in the Swedish submarine class Sjöormen, project name A11. The planning of the ships 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 hull submarine, with hull shape influenced by the American experimental submarine USS Albacore (AGSS-569). The hulls was covered with rubber tiles to reduce the acoustic signature (Anechoic tiles), at this time a pioneer technology. The Sjöormen-class was also the first in the world to use a cross-rudder. The submarine served in the Swedish navy for almost 30 years and was then after upgrades sold to Singapore in 1997 together with its four sister ships.
References
{"Från Hajen till Södermanland", Granholm, 2003 (Swedish submarines during 100 years)
| Swedish Navy |
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|---|---|
| Republic of Singapore Navy Challenger class | |
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