Hai Lung-class submarine

ROCS Hai Lung (SS-793)
Class overview
Name	Chien Lung or Hai Lung
Builders	Wilton-Fijenoord
Operators	Republic of China Navy
Succeeded by	Hai Kun class
Built	1982–1986
In commission	1987–present
Planned	2
Completed	2
Active	2
General characteristics
Type	Diesel-electric attack submarine
Displacement	2376 t (surfaced) 2660 t (submerged)
Length	66.9 m (219 ft 6 in)
Beam	8.4 m (27 ft 7 in)
Draught	6.7 m (22 ft 0 in)
Propulsion	3 × Bronswerk/Stork-Werkspoor RUB 215x12 diesels; 4050 hp
Speed	20 knots (37 km/h; 23 mph) (submerged) 12 knots (22 km/h; 14 mph) (surfaced)
Test depth	300 m (980 ft)
Complement	67 (8 officers)
Sensors and processing systems	Type 1001 radar Sonar Elodone Octopus, Type 20026 towed array, DUUX-5 Elbit TIMNEX 4CH(V2) electronic support measures (ESM) system
Armament	6 × 21 in (533 mm) torpedo tubes 28 torpedoes/missiles AEG SUT 264 torpedo (dual purpose - wire-guided, active/passive homing) Mark 48 torpedo[1][2] UGM-84 Harpoon (2014)

The Chien Lung (Chinese: 劍龍) class of submarine, also known as the Hai Lung (Sea Dragon) class, was manufactured in the Netherlands for the Republic of China (Taiwan) and is currently in service with its navy. They are a modified version of the Dutch Navy's Zwaardvis class which itself is based on the US Barbel class. A new class of submarines being built by Taiwan's Indigenous Defense Submarine program, will eventually replace them.