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Korea FFX (Ulsan) Frigate program
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ROKS Daejeon (FFG-823) was launched by Daewoo Shipbuilding & Marine Engineering (DSME) today (May 3).
The new warship Daejeon is the fifth of the country’s FFX Batch II frigates to replace the Navy’s 1,500-ton frigates and 1,000-ton patrol combat corvettes, according to the South Korean Navy.
The ceremony was held at its manufacturer Daewoo Shipbuilding & Marine Engineering Co.’s Okpo shipyard on the southern island of Geoje, with the attendance of Chief of Naval Operations Adm. Boo Suk-jong.
With 120 crew members aboard, the 122-meter frigate will carry various weapons, including ship-to-ship and surface-to-ground missiles, as well as a helicopter for naval operations.
The new frigate has improved capability to detect and attack submarines with a towed array sonar system and a long-range antisubmarine torpedo, according to the South Korean Navy.
The new warship will be delivered to the South Korean Navy by the end of the next year after a trial period.
ROKS Daejeon (FFG-823)
The new warship Daejeon is the fifth of the country’s FFX Batch II frigates. The Daegu-class frigate is a class of guided-missile frigates of the Republic of Korea Navy (ROKN). The Daegu-class is based on the preceding Incheon-class frigate and has otherwise been referred to as an Incheon-class batch II, or FFG-II. Eight Daegu-class ships are planned, with the final goal of 20-22 frigates (of all types) in the ROKN. The Daegu-class frigates are to be built by Daewoo Shipbuilding & Marine Engineering (DSME) and Hyundai Heavy Industries.| Displacement: | 2,800 t (empty), 3,592t (full load) |
| Length: | 122 m (400 ft) |
| Beam: | 14 m (46 ft) |
| Draft: | 4 m (13 ft) |
| Propulsion: | Combined diesel-electric or gas 1 × Rolls-Royce MT30 gas turbine 4 × MTU 12V 4000 M53B diesel engine 2 × Leonardo DRS electric motors |
| Speed: | 30 knots (56 km/h; 35 mph) (max)18 knots (33 km/h; 21 mph) (cruising) |
| Range: | 4,500 nautical miles (8,000 km) |
| Complement: | 140 |
| Sensors and processing systems: | SPS-550K air search 3D radar SPG-540K fire control radar SQS-240K hull-mounted sonar SQR-250K towed array sonar system SAQ-540K EOTS Hanwha Systems SAQ-600K IRSTs Naval Shield Integrated Combat Management System |
| Electronic warfare & decoys: | LIG Nex1 SLQ-200(V)K Sonata electronic warfare suite SLQ-261K torpedo acoustic counter measures MASS decoy launchers |
| Armament: | 1 × 5 inch (127 mm)/L62 caliber Mk 45 Mod 4 naval gun 1 × 20 mm Phalanx CIWS 2 × triple torpedo tubes for K745 Blue Shark torpedo 8 × SSM-700K Haeseong Anti-ship Missile 16-cell K-VLS for:Haegung K-SAAM quadpacked in 4 per cell Haeryong VL-Tactical Land Attack Missiles K-ASROC Red Shark |
| Aircraft carried: | Super Lynx or AW159 helicopter |
DSME launches 5th Daegu Class frigate ROKS Daejeon (FFG-823) - Naval Post- Naval News and Information
ROKS Daejeon (FFG-823) was launched by Daewoo Shipbuilding & Marine Engineering (DSME) today (May 3).
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SEOUL, Aug. 4 (Yonhap) -- South Korea decided to acquire a new frigate with improved anti-aircraft and survival capabilities through domestic research and development, the arms procurement agency said Wednesday.
The defense project promotion committee held a videoconference and approved the plan for the 3.5 trillion won (US$3.1 billion) Ulsan-class Batch IV project, according to the Defense Acquisition Program Administration.
"The project is expected to enhance the military's maritime operational capabilities, as well as contribute to securing up-to-date technologies and creating jobs," the agency said in a release.
The total budget for the program, which will run from 2023-2032, is subject to review and confirmation following a feasibility study. Hyundai Heavy Industries Co. is currently developing South Korea's new 3,500-ton frigates under the Ulsan-class Batch III project that began in 2016.
During Wednesday's meeting, the committee also decided to change the lead developer for the upgrade of light torpedoes from the state-run Agency for Defense Development to a local company. The change is expected to help the local defense industry enhance its capabilities to conduct various research projects, the agency said.
S. Korea to develop new frigate with domestic technologies | Yonhap News Agency
SEOUL, Aug. 4 (Yonhap) -- South Korea decided to acquire a new frigate with improved anti-...
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This thread is dedicated to the FFX program, also called the Ulsan program of the Korean Navy. FFX program is a follow up program to the Ulsan-class FFs and Donghae/Pohang-Class PCCs and are replacing these aging ships in the Korean green water fleet.
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Via Korea Defense Blog
Republic of Korea Navy's first FFX Batch-III frigate ROKS Chungnam (FFG-828) was launched today by Hyundai Heavy Industries (HHI) on 10 April 2023
ROKS Chungnam, displacing at 3,600 tons (empty), is the lead ship of its class and is 129m long, 14.8m wide, and 38.9m tall. It is the first of six frigates that will be built as part of the FFX Batch-III program. Six Incheon-class frigates and eight Daegu-class frigates were built between 2010 and 2022 through the Batch-I and II programs.
ROKS Chungnam's sensors and various other subsystems, such as combat management system (CMS), tow-arrayed sonar system (TASS), and hull mounted sonar (HMS), are indigenously-developed. Most notably, the frigate is equipped with 360° multi function radar (MFR) and integrated sensor mast developed by Hanwha Systems.
Additionally, it is armed with K-VLS cells, K-SAAM Sea Bow surface-to-air missile, 5 inch gun, anti-ship missiles, land-attack cruise missiles, Red Shark K-ASROC, K745 Blue Shark torpedos, and CIWS-II.
ROKS Chungnam will undergo trials and be handed over to the ROKN in December 2024.
This is the second time ROKN has named its warship as ROKS Chungnam - it was originally used for Rudderow-class destroyer escort ROKS Chungnam (FF-953) acquired from the US in 1963.
Republic of Korea Navy's first FFX Batch-III frigate ROKS Chungnam (FFG-828) was launched today by Hyundai Heavy Industries (HHI) on 10 April 2023
ROKS Chungnam, displacing at 3,600 tons (empty), is the lead ship of its class and is 129m long, 14.8m wide, and 38.9m tall. It is the first of six frigates that will be built as part of the FFX Batch-III program. Six Incheon-class frigates and eight Daegu-class frigates were built between 2010 and 2022 through the Batch-I and II programs.
ROKS Chungnam's sensors and various other subsystems, such as combat management system (CMS), tow-arrayed sonar system (TASS), and hull mounted sonar (HMS), are indigenously-developed. Most notably, the frigate is equipped with 360° multi function radar (MFR) and integrated sensor mast developed by Hanwha Systems.
Additionally, it is armed with K-VLS cells, K-SAAM Sea Bow surface-to-air missile, 5 inch gun, anti-ship missiles, land-attack cruise missiles, Red Shark K-ASROC, K745 Blue Shark torpedos, and CIWS-II.
ROKS Chungnam will undergo trials and be handed over to the ROKN in December 2024.
This is the second time ROKN has named its warship as ROKS Chungnam - it was originally used for Rudderow-class destroyer escort ROKS Chungnam (FF-953) acquired from the US in 1963.
urban mine
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The FFX program refers to the ROK Navy's future frigate program, which began in the early 21st century.
Previously, the ROK Navy built PCC and FF to counter North Korea's high-speed spy vessels and semi-submersibles.
Notably, this high-speed spy ship had multiple engines, allowing it to outrun the ROK Navy's warships at 33 knots.
Therefore, it was inevitable that the PCC and FF would be fast and heavily armed, combining not only diesel engines but also gas turbine engines to effectively counter fast boats and spy ships. However, while this firepower is helpful in anti-surface warfare against maritime targets, it has no anti-submarine capabilities, and it has poor anti-aircraft capabilities.
The ROK Navy has recognized this situation and is replacing these older ships with larger displacement coastal defense frigates with improved anti-submarine, anti-aircraft, and anti-surface warfare capabilities.
The Incheon-class frigate's main gun is the 127mm/L62 Mk. 45 Mod 4 naval gun. This was chosen over a smaller 76mm for naval barrage support in amphibious landings and superiority in ship to ship firing. Point-defense armaments include a single 20 mm Phalanx CIWS and a RIM-116 Rolling Airframe Missile Block 1 21-round launcher. The anti-submarine warfare armaments consists of K745 LW Cheong Sahng-uh (Blue Shark) torpedoes. Anti-ship capability is provided by SSM-700K Haeseong (Sea Star) long-range anti-ship missiles, each with performance similar to the American Harpoon. Land-attack capability is provided by the recently developed Tactical Ship to Land attack missile, which is derived from the SSM-700K Haeseong; initially, the land attack missiles were planned to start arming batch 2 Incheon-class ships, but feasibility studies showed they could be retrofitted to batch 1 ships, which began in September 2016, enhancing their flexibility and deterrence capabilities with 150–200 km (93–124 mi) range tactical missiles.
Previously, the ROK Navy built PCC and FF to counter North Korea's high-speed spy vessels and semi-submersibles.
Notably, this high-speed spy ship had multiple engines, allowing it to outrun the ROK Navy's warships at 33 knots.
Therefore, it was inevitable that the PCC and FF would be fast and heavily armed, combining not only diesel engines but also gas turbine engines to effectively counter fast boats and spy ships. However, while this firepower is helpful in anti-surface warfare against maritime targets, it has no anti-submarine capabilities, and it has poor anti-aircraft capabilities.
The ROK Navy has recognized this situation and is replacing these older ships with larger displacement coastal defense frigates with improved anti-submarine, anti-aircraft, and anti-surface warfare capabilities.
FFX Batch-I (Incheon-class frigate) - 6
The Incheon-class frigate's main gun is the 127mm/L62 Mk. 45 Mod 4 naval gun. This was chosen over a smaller 76mm for naval barrage support in amphibious landings and superiority in ship to ship firing. Point-defense armaments include a single 20 mm Phalanx CIWS and a RIM-116 Rolling Airframe Missile Block 1 21-round launcher. The anti-submarine warfare armaments consists of K745 LW Cheong Sahng-uh (Blue Shark) torpedoes. Anti-ship capability is provided by SSM-700K Haeseong (Sea Star) long-range anti-ship missiles, each with performance similar to the American Harpoon. Land-attack capability is provided by the recently developed Tactical Ship to Land attack missile, which is derived from the SSM-700K Haeseong; initially, the land attack missiles were planned to start arming batch 2 Incheon-class ships, but feasibility studies showed they could be retrofitted to batch 1 ships, which began in September 2016, enhancing their flexibility and deterrence capabilities with 150–200 km (93–124 mi) range tactical missiles.
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urban mine
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FFX Batch-II (Daegu-class frigate) - 8
The Daegu-class is an improved variant of the Incheon-class frigate. Modifications to the Incheon-class include a TB-250K towed array sonar system and a 16-cell Korean Vertical Launching System (K-VLS) that is able to deploy the K-SAAM, Hong Sang Eo anti-submarine missile, and Haeryong tactical land attack cruise missiles.
The most notable improvement of the Daegu class over the Incheon class is that they improved their ASW capabilities. While the Incheon class is equipped with the low-cost SLQ-260K system, the Daegu class is equipped with the SQR-250K TASS, which is capable of full-scale anti-submarine operations.
The hull design is generally based on the one of the Incheon-class. However, as a part of weapon system modifications, the superstructure has been significantly changed. The hangar and a hellicopter deck on stern has been enlarged to support the operation of a 10-ton helicopter.
The Daegu-class is the first Korean warship to be equipped with a combined diesel-electric or gas (CODLOG) propulsion system. The propulsion system of the ROKN ships have a gas turbine direct drive and four high speed diesel generators driving two Leonardo DRS permanent magnet electric motors. The Rolls Royce MT30 turbine engine replaces the twin gas turbine layout of the Incheon-class frigates.
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urban mine
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As the Batch-I to Batch-II program progresses, there are also export warship programs based on this ship.
The Jose Rizal-class Frigate is HHI's export warship based on the Batch-I Incheon-class. The first ship was delivered in 2019 and the second, Antonio Luna, is currently in service with the Philippine Navy. They were built on a shoestring budget, so future upgrades are planned. They will be equipped with VLS, CIWS, TASS, and more, with space left for them.
HHI has also received an order for a 3,200-ton class Corvette for the Philippines.
This time, it is expected to be delivered with VLS and anti-ship missiles.
The Bhumibol Adulyadej-class frigate was ordered by the Royal Thai Navy and is currently considered the most advanced ship in the country. It was built and launched by DSME and delivered to the Royal Thai Navy in 2018. Unlike its predecessor, the Jose Rizal-class, the Bhumibol Adulyadej is equipped with advanced specifications, including ESSM and Sea Giraffe 4A AESA radar.
The Jose Rizal-class Frigate is HHI's export warship based on the Batch-I Incheon-class. The first ship was delivered in 2019 and the second, Antonio Luna, is currently in service with the Philippine Navy. They were built on a shoestring budget, so future upgrades are planned. They will be equipped with VLS, CIWS, TASS, and more, with space left for them.
HHI has also received an order for a 3,200-ton class Corvette for the Philippines.
This time, it is expected to be delivered with VLS and anti-ship missiles.
The Bhumibol Adulyadej-class frigate was ordered by the Royal Thai Navy and is currently considered the most advanced ship in the country. It was built and launched by DSME and delivered to the Royal Thai Navy in 2018. Unlike its predecessor, the Jose Rizal-class, the Bhumibol Adulyadej is equipped with advanced specifications, including ESSM and Sea Giraffe 4A AESA radar.
