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The Republic of China Navy is the maritime branch of the Republic of China Armed Forces. The ROC Navy's primary mission is to defend ROC territories and the sea lanes that surround Taiwan against a blockade, attack, or possible invasion by the People's Liberation Army Navy of the People's Republic of China. Operations include maritime patrols in the Taiwan Strait and surrounding waters, as well as counter-strike and counter-invasion operations during wartime. The Republic of China Marine Corps functions as a branch of the Navy.

The ship prefix for ROCN combatants is ROCS (Republic of China Ship); an older usage is CNS (Chinese Navy Ship).

ROCN also avoids giving ships hull numbers that add up to or end at "4", as the Chinese pronunciation of the number 4 is close to the pronunciation of "death". This numbering scheme is more apparent on more newly acquired ships.

Note: The ROCN generally uses hull classification symbols similar to the U.S. system with some changes. The proper classification is provided when known.

Present fleet

Class	Type	Ships	Note
Destroyers (4)
Kee Lung-class	Destroyer	ROCS Kee Lung (DDG-1801) ROCS Su Ao (DDG-1802) ROCS Tso Ying (DDG-1803) ROCS Ma Kong (DDG-1805)	Decommissioned U.S. Navy Kidd-class destroyers transferred to Taiwan^[1]
Frigates (22)
Chi Yang-class	Frigate	ROCS Fong Yang (FFG-933) ROCS Fen Yang (FFG-934) ROCS Lan Yang (FFG-935) ROCS Hwai Yang (FFG-937) ROCS Ning Yang (FFG-938) ROCS Yi Yang (FFG-939)	Decommissioned U.S. Navy Knox-class frigates transferred to Taiwan and further upgraded.^[2]
Cheng Kung-class	Frigate	ROCS Cheng Kung (PFG-1101) ROCS Cheng Ho (PFG-1103) ROCS Chi Kuang (PFG-1105) ROCS Yueh Fei (PFG-1106) ROCS Tzu I (PFG-1107) ROCS Pan Chao (PFG-1108) ROCS Chang Chien (PFG-1109) ROCS Tian Dan (PFG-1110) ROCS Ming Chuan (PFG-1112) ROCS Feng Jia (PFG-1115)	Oliver Hazard Perry-class frigates that were built in Taiwan under license while the latest two ships were decommissioned by the U.S. Navy and transferred.^[3]
Kang Ding-class	Frigate	ROCS Kang Ding (PFG-1202) ROCS Si Ning (PFG-1203) ROCS Kun Ming (PFG-1205) ROCS Di Hua (PFG-1206) ROCS Wu Chang (PFG-1207) ROCS Chen De (PFG-1208)	Modified La Fayette-class frigate; purchased from France in the early 1990s^[4]
Corvettes (7)
Tuo Chiang-class	Corvette	ROCS Tuo Chiang (PGG-618) ROCS Ta Chiang (PGG-619) ROCS Fu Chiang (PGG-620) ROCS Hsu Chiang (PFG-621) ROCS Wu Chiang (PFG-623) ROCS An Chiang (PFG-625) ROCS Wan Chiang (PFG-626)	Up to 12 planned of which the ROCS Tuo Chiang (PGG-618) is a prototype.^[5] The ROCS Ta Chiang is an improved variant.^[6]
Patrol Vessels and Missile Ships (37)
Ching Chiang-class	Patrol Ships	ROCS Kao Chiang (高江艦) (PGG-609) ROCS Jin Chiang (金江艦) (PGG-610) ROCS Hsiang Chiang (湘江艦) (PGG-611) ROCS Po Chiang (鄱江艦) (PGG-614) ROCS Chang Chiang (昌江艦) (PGG-615) ROCS Chu Chiang (珠江艦) (PGG-617)	Locally designed and built by CSBC Corporation, Taiwan in Kaohsiung.
Kung Hua VI (Kwang-Hwa)-class	Missile Boats	FACG-60 (prototype), FACG-61~66, 68~75, 77~84, 86~93	Prototype and 30 built; Last batch delivered to ROCN in October 2011^[7]
Mine warfare (14)
Yung Feng-class	Costal Minehunter	ROCS Yung Feng (MHC-1301) ROCS Yung Chia (MHC-1302) ROCS Yung Nien (MHC-1303) ROCS Yung Shun (MHC-1305)	Built in Germany by Abeking & Rasmussen, Lemwer 1990–1991.^[8]
Yung Yang (Yeong Yang)-class^[9]	Minesweepers	ROCS Yung Yang (MSO-1306)	Former U.S. Aggressive-class minesweeper.
Yung Jin-class	Minehunter	ROCS Yung Jin (MHC-1310) ROCS Yung An (MHC-1311)	Former U.S. Osprey-class minehunters
Min Jiang-class	Costal minelayer	ROCS FMLB-1 ROCS FMLB-2 ROCS FMLB-3 ROCS FMLB-5	Built in Taiwan by Lung Teh Shipbuilding Co., 2020–2021.^[10]
Amphibious ships (4)
Hsu Hai-class	Dock Landing Ship	ROCS Hsu Hai (LSD-193)	Former U.S. Anchorage-class dock landing ship
Chung Hai-class	Tank Landing Ship	ROCS Chung Chien (LST-205) ROCS Chung Chie (LST-218) ROCS Chung Ming (LST-227) ROCS Chung Yeh (LST-231)	Former U.S. LST-542-class tank landing ships
Chung He-class	Tank Landing Ship	ROCS Chung Ho (LST-232)^[11] ROCS Chung Ping (LST-233)^[12]	Former U.S. Newport-class tank landing ships
Yushan-class	Amphibious transport dock	ROCS Yu Shan (LPD-1401)
Submarines (4)
Hai Shih-class	Attack Submarine	ROCS Hai Shih (SS-791) ROCS Hai Bao (SS-792)	World War II era submarines that were upgraded under GUPPY II program.^[13]^[14] Former U.S. Tench-class & Balao-class submarines.
Hai Lung (Sea Dragon)-class	Attack Submarine	ROCS Hai Lung (SS-793) ROCS Hai Hu (SS-794)	Purchased from the Netherlands in the mid-1980s.^[15] Former Zwaardvis-class submarines. A class of replacement submarines are being built under the Indigenous Defense Submarine program.
Support Vessels (5)
Wu Yi-class	Fast Combat Support Ship	ROCS Wu Yi (AOE-530)
Pan Shi-class	Fast Combat Support Ship	ROCS Pan Shi (AOE-532)
Kao Hsiang-class	Auxiliary General Communications Ship	ROCS Kao Hsiung (AGC-1)	formerly ROCS Chung Hsi (LST-219)^[16]
Da-Quan-class	Survey ship	ROCS Ta Kuan (AGS-1601)	Has been loaned out to National Science Council and other research agencies.

In June 2016, two Oliver Hazard Perry-class frigates of the US Navy, ex-USS Taylor (FFG-50) and USS Gary (FFG-51), were handed over to the Government of Taiwan for the Republic of China Navy. The transfer cost was an estimated US$177 million. Following a reactivation period at Detyens Shipyard in Charleston SC, the ships sailed for Taiwan in March 2017 and arrived at their new home port in June 2017. The transfer of the ships includes the AN/SQR-19 Multi-Function Towed Array. Taiwan had previously been blocked from acquiring the AN/SQR-19, and the transfer of the system points to an anti-submarine focus in line with the Knox-class frigates they will likely replace.

A new class of eight (8) conventional attack submarines is planned. In November 2020, President Tsai Ing-wen officially opened the submarine construction facility in Kaohsiung, and it is reported (as of November 2021) that the lead submarine is under construction. The Taiwanese military's Indigenous Defense Submarine program anticipates having the first 2,500-ton domestically produced Hai Kun-class submarine entering service in 2025.

Decommissioned ships

Long Chiang-class patrol boats

US designed; based on PSMM MK.5

ROCS Long Chiang (PG-601) – built by Tacoma Boatbuilding Company
ROCS Sui Chiang (PG-602) – built by China Shipbuilding Corporation

Hai Ou-class missile boat (Dvora-class)

FABG-1~59 (no 4, 13, 22, 31, 40); all were decommissioned by 2013; two were gifted to Paraguay in 1994 and 4 were gifted to Gambia in 2009; replaced by Kung Hua VI project missile boats

PCL-class offshore patrol craft

9 locally designed and built. 143 tons fully load. All decommissioned in 2011.

SX-404-class submarine

Decommissioned in 1973.^[17]

ROCS Hai Jiao (海蛟)
ROCS Hai Lung (海龍)

Ex United States Navy ships

Chi Yang-class frigate (Knox-class)

ROCS Chi Yang FFG-932 (ex USN FF-1073) retired 2015
ROCS Hai Yang FFG-936 (ex USN FF-1083) retired 2015

Chao Yang-class destroyer (Gearing-class) World War II era DDs later upgraded to DDGs in three batches, Wu Chin I, II and III. All ships in this class were retired by 2005. [1]

Wu Chin I Batch: (Retired in 1980s-1990s)

Wu Chin II Batch: (Retired in late 1990s)