Challenger-class submarine

RSS Chieftain
Class overview
BuildersKockums
Operators Republic of Singapore Navy
Succeeded byArcher class
Completed4
Active2
Retired2
General characteristics
TypeDiesel-electric Attack submarine
Displacement
  • Surfaced: 1,125 t (1,107 long tons; 1,240 short tons)
  • Submerged: 1,400 t (1,400 long tons; 1,500 short tons)
Length50 m (164 ft 1 in)
Beam6.1 m (20 ft 0 in)
Draught5.1 m (16 ft 9 in)
Propulsion
Speed
  • Surfaced: 15 kn (28 km/h; 17 mph)
  • Submerged: 20 kn (37 km/h; 23 mph)
Complement23
Sensors and
processing systems		FAS
Armament
  • 4 × 533 mm (21 in) torpedo tubes
  • 2 × 400 mm (16 in) torpedo tubes

The Challenger class is one of the submarine classes of the Republic of Singapore Navy (RSN). They are extensively modernised versions of the former Sjöormen-class submarines. Challenger and Centurion were retired in 2015,[1] while Conqueror and Chieftain are still in active service as of 2022.

  1. ^ "Republic of Singapore Navy Launches New Submarine Training Centre". Archived from the original on 2016-04-26. Retrieved 2015-03-12.