Hai Lung-class submarine

ROCS Chien Lung (SS-793)
Class overview
Name:	Chien Lung
Operators:	Republic of China Navy
Completed:	2
Active:	2
General characteristics
Type:	Conventional attack submarine
Displacement:	2376 t (surfaced) 2660 t (submerged)
Length:	66.9 m (219 ft)
Beam:	8.4 m (28 ft)
Draught:	6.7 m (22 ft)
Propulsion:	3 × Bronswerk/Stork-Werkspoor RUB 215x12 diesels; 4050 hp
Speed:	20 kn (37 km/h; 23 mph) (submerged) 12 kn (22 km/h; 14 mph) (surfaced)
Test depth:	300 m
Complement:	67 (8 officers)
Sensors and processing systems:	type 1001 radar Sonar Elodone Octopus, type 20026 towed array, DUUX-5
Armament:	6 × 21" torpedo tubes 28 torpedoes/missiles AEG SUT (dual purpose - wire-guided, active/passive homing) UGM-84 Harpoon (planned)

The Chien Lung 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.

In 2005, it was reported that the Chien Lung-class submarines would be upgraded to be capable of launching the UGM-84 Harpoon anti-ship missile.

In 2008, the Pentagon notified the United States Congress of the sale to Taiwan of 32 UGM-84 Harpoon Block II missiles, along with two weapon control systems, other associated equipment and services.

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