As of 2022, 7 remain in service in the ROKN, and 7 were transferred to other navies.
According to Naval News, the Indonesian Navy will receive a retired corvette from South Korea. The Indonesian side requested the transfer of three corvettes during Admiral Yudo Margono’s visit to Korea in April last year, however, the transfer of only one corvette was confirmed, and two more are still under consideration.
The exact class of ship that will be transferred to Indonesia has not yet been revealed, however Naval News believes it will likely be a Pohang-class corvette. The Pohang-class PCC is the low-end complement of the high-low mix domestic naval construction plan of the Republic of Korea Navy under the 1st Yulgok Project (1974-1986) for the Republic of Korea Armed Forces. The ship is designed for patrolling maritime borders, including the Northern Limit Line, protecting the littoral zone, and combating the North Korean vessels.
The Korean Navy has been decommissioning the Pohang class since 2009. Most recently, in 2021, two corvettes were donated to Colombia and Peru. As of 2022, 7 remain in service in the ROKN, and 7 were transferred to other navies. The three corvettes that have been decommissioned in 2021 are ROKS Wonju (PCC-769), ROKS Seongnam (PCC-775), and ROKS Jecheon (PCC-776), all of which are Flight-IV vessels.
According to Korean media, the decommissioning of the Pohang-class corvettes, although they are still in good technical condition, is only to equip other more modern warships, helping to improve the combat capacity of the Navy. The Pohang-class will be gradually replaced by newer Incheon- and Daegu-class frigates. As for the Chamsuri-class patrol boats, they will have to give way to the Yun Youngha-class patrol vessels.
Compared to Flight III, the Pohang-class ships of Flight IV are more modern. In terms of overall structure, Flight IV is not much different from Flight III, which has a full load displacement of about 1,200 tons. The Flight IV series is equipped with a Combined diesel or gas propulsion system consisting of a GE LM2500 gas turbine engine and two MTU 12V 956 TB82 diesel engines, allowing a maximum speed of 32 knots (59 km/h), range of 4,000 nmi (7,400 km) at a cruising speed of 15 knots (28 km/h) with a crew of 95 (10 officers).
The superiority of Flight IV over Flight III lies in the avionics: includes the Marconi ST1802 fire control radar and the Radamec 2400 electro-optical targeting system, replacing the older Signal WM28 and Signaal LIOD types. The “heart” of the ship was the WSA-423 automated combat management system, a joint product of Samsung Aerospace Industries (later Hanwha Systems) and Britain’s Ferranti. This system is currently the backbone of the modern combat system in the Korean Navy, dubbed “Navy Shield”.
In terms of firepower, the biggest difference is that Flight IV is equipped with four Harpoon anti-ship missiles. Although it is possible that upon delivery, the original Harpoon missile launchers on Flight IV will be removed, but their fuselage structure has enough favorable factors for partners to upgrade on request.