The Republic of China Navy (ROCN; ), also called the ROC Navy and colloquially the Taiwan Navy, is the maritime branch of the Republic of China Armed Forces (ROCAF). The service was formerly commonly just called the Chinese Navy during World War II and prior to the ROC's retreat from the mainland. While still sometimes used especially in domestic circles, it is now not as often used internationally due to the current ambiguous political status of Taiwan and to avoid confusion with the People's Liberation Army Navy of the People's Republic of China (PRC). Today, the ROC Navy's primary mission is to defend the remaining ROC's territories and the sea lanes under its jurisdiction against any possible blockades, attacks, or invasion. Operations include maritime patrols in the Taiwan Strait and surrounding waters, as well as readiness for counter-strike and counter-invasion operations during wartime. The Republic of China Marine Corps (ROCMC) also 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). Organization Republic of China Navy Command Headquarters The Navy CHQs () is subordinate to the General Staff, the Minister of Defense, and the ROC President. Internal units: Personnel, Combat Readiness & Training, Logistics, Planning, Combat Systems, General Affairs, Comptroller, Inspector General, Political Warfare. Naval Fleets Command () 124th Fleet: Zuoying District, Kaohsiung City 131st Fleet: Keelung City, Taiwan 146th Fleet: Magong City, Penghu County, Taiwan Amphibious Fleet (151st Fleet), Zuoying District, Kaohsiung City 168th Fleet: Suao, Yilan County, Taiwan 192nd Fleet (Navy Minesweeper Fleet): Zuoying District, Kaohsiung City 256th Submarine Squadron: Zuoying District, Kaohsiung City 261st Squadron Hai Chiao(Sea Dragon) PGMG Guided Missile Boat/Craft Group () 1st Hai Chiao Guided Missile Boat/Craft Squadron of 10 at Suao naval base 2nd Hai Chiao Guided Missile Boat/Craft Squadron of 10 Kuang Hua VI-class missile boat 3rd Hai Chiao Guided Missile Boat/Craft Squadron of 10 Hai Ou-class missile boat (Dvora class) 4th Hai Chiao Guided Missile Boat/Craft Squadron of 10 Hai Ou-class missile boat (Dvora class) 5th Hai Chiao Guided Missile Boat/Craft Squadron of 11 Kuang Hua VI-class missile boat Hai Feng Shore Based Anti-ship Missile Group (), operates 6 batteries of fixed/mobile HF-2 anti-ship missiles. 7th Hai Feng Shore Based Anti-ship Missile Squadron (), Haulien, Eastern Taiwan. Aviation Command (operates from Pingtung, Tsoying, and Hualien AB) Naval Aviation, at Pingtung, will receive 12 P-3C