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 & type: |
Sjöormen-class submarine |
| Displacement: |
- 1,130 t (1,112 long tons) surfaced
- 1,210 t (1,191 long tons) submerged
|
| 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: |
- 2 × Hedemora Diesel generators
- 1 × electric motor
- 1 shaft
|
| Speed: |
20 knots (23 mph; 37 km/h) |
| Complement: |
25 officers and enlisted |
| Armament: |
|
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 an 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)