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Republic of Singapore Navy
Challenger class Submarine
 
 
challenger class submarine singapore navy rss conqueror chieftain centurion kockums swedish royal
 
 
Units:
 
 RSS Challenger (?)
RSS Conqueror (2001)
RSS Chieftain (2002)
 RSS Centurion (2004)
  
 
Specifications:
Builder: Kockums AB, Malmö, Sweden
Length: 50 meters (164 feet 1 inches)
Beam: 6,1 meters (20 ft)
Draft: 5,1 meters (16 ft 9 in)
Displacement: 1125 tons (surfaced) / 1400 tons (submerged)
Speed: 15 knots (28 km/h) surfaced / 20 knots (37 km/h) submerged
Range:
Complement: 23

Propulsion:
2 x Pielstick diesel engines
1 x ASEA electric motor
1 shaft, 1 propeller
Armament:
4 x 21-inches (533 mm) torpedo tubes
 2 x 16-inches (400 mm) torpedo tubes
 
The Challenger class is one of the submarine classes of the Singapore Navy. They are extensively modernized versions of ex-Sjöormen class submarines.

In 1995, the RSN acquired a Challenger class (formerly known as Sjöormen class) submarine from the Swedish Navy and another three in 1997, making them Singapore's first underwater platforms. It is believed that the Challenger class were purchased to develop the required submarine operations expertise before selecting a modern class of submarines to replace them, since all the boats are over 40 years old.


Swedish Royal Navy service:
HMS Sjöbjörnen: launched - January 9, 1968 / commissioned - July 31, 1968
HMS Sjölejonet: launched - July 29, 1967 / commissioned - December 16, 1968
HMS Sjöormen: launched - January 25, 1967 / commissioned - July 31, 1968
HMS Sjöhunden: launched - March 21, 1968 / commissioned - June 25, 1969

Singapore Navy service:
RSS Challenger (ex HMS Sjöbjörnen): launched - September 26, 1997 / commissioned - ?
RSS Conqueror (ex HMS Sjölejonet): launched - May 28, 1999 / commissioned - July 22, 2001
RSS Centurion (ex HMS Sjöormen): launched - May 28, 1999 / commissioned - June 26, 2004
RSS Chieftain (ex HMS Sjöhunden): launched - May 22, 2001 / commissioned - August 24, 2002

source: wikipedia

 

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