Västergötland class submarine

HSwMS Södermanland
Class overview
Name: Västergötland class
Builders: Kockums
Operators:  Swedish Navy
 Republic of Singapore Navy
Preceded by: Näcken class
Succeeded by: Gotland class
Subclasses: Södermanland class
Archer class
Planned: 4
Completed: 4
Active: 4
General characteristics
Type:Submarine
Displacement:Surfaced: 1,070 t (1,050 long tons; 1,180 short tons)
Submerged: 1,150 t (1,130 long tons; 1,270 short tons)
Length:48.5 m (159 ft 1 in)
Beam:6.1 m (20 ft 0 in)
Draft:5.6 m (18 ft 4 in)
Propulsion:2 × Hedmora V12A/15
1 × Jeumont-Schneider electric motor
Speed:Surfaced: 11 kn (20 km/h; 13 mph)
Submerged: 20 kn (37 km/h; 23 mph)
Complement:18 officers
6 conscripts
Sensors and
processing systems:		FAS
Armament:6 × 533mm tubes
3 × 400-mm tubes
Mines

The Västergötland class of diesel-electric submarines was introduced in 1987 by the Swedish Navy. The original four ships of her class, Västergötland, Hälsingland, Södermanland, and Östergötland, were built between 1983 and 1988 by Kockums AB. The latter two have undergone comprehensive refits, including the insertion of a new hull section with an air-independent propulsion system equipped with Stirling engines. They have been recommissioned as the new Södermanland class.

The other two had been put in reserve until November 2005, when they were sold to the Republic of Singapore Navy as the Archer class. They are to be refitted to Södermanland class standards and receive additional climatisation for use in tropical waters.

Units

Ship name Laid down Launched Commissioned Service Refit Status
Västergötland 10 January 1983 19 July 1986 27 November 1987 1st Submarine flotilla Sold to Republic of Singapore Navy 2005 (deal finished 2008)

Recommissioned as Archer-class submarine

 Active
Helsingland 1 January 1984 31 August 1987 20 October 1988 Active
Södermanland 1985 12 April 1988 21 April 1989 Refitted 2003-2004 to Södermanland class Active
Östergötland 1986 9 December 1988 Active

See also