According to the notice published by the Defense Security Cooperation Agency (DSCA), the Republic of Korea has requested to buy two (2) MK 15 MOD 25 Phalanx Close-In Weapons System (CIWS) Block 1B Baseline 2 (IB2) systems; and four thousand (4,000) rounds, 20MM cartridge API linked. Also included are spare parts; other support equipment; ammunition; books and other publications; software; training; engineering technical assistance and other technical assistance; and other related elements of program and logistical support. The estimated total cost is $39 million.
The proposed sale will improve the Republic of Korea’s capability to meet current and future threats. Korea will use the systems aboard its first KDX III Batch II Class ship to provide it with effective means of detecting and defending itself against incoming airborne threats. The Republic of Korea will have no difficulty absorbing this equipment into its armed forces.
About Phalanx CIWS
According to Raytheon, the Phalanx weapon system is a rapid-fire, computer-controlled, radar-guided gun that can defeat anti-ship missiles and other close-in threats on land and at sea. At sea, navies use Phalanx to defeat anti-ship missiles and close-in threats that have pierced other lines of defense. On land, the U.S. Army uses the weapon system to detect and counter rocket, artillery and mortar systems.
The Block 1B version adds control stations that allow operators to visually track and identify targets before engagement. With an added forward-looking infrared sensor, the 1B variant can be used at sea against helicopters and high-speed surface craft and on land to help identify and confirm incoming threats. The Phalanx weapon system is installed on all U.S. Navy surface combatant ship classes and on those of 24 allied nations.
About ROK Navy’s KDX III Batch II Destroyer
Hyundai Heavy Industries (HHI) announced on October 10 2019 it has signed a US$565 million contract with the South Korean Defense Acquisition Program Administration (DAPA) for the first of three Gwanggaeto-III Batch II (KDX-III Batch II) destroyers for the ROK Navy.
Under the deal, HHI will deliver the first of three Aegis destroyers by November 2024. In May 2019, South Korea approved plans to construct the second batch of three destroyers with a budget of around US$3.3 billion.
The KDX-III Batch II program calls for the construction of three Aegis destroyers, one to be delivered every two years. The three existing 7,600-ton KDX-III Batch I Aegis destroyers of the ROK Navy are based on the DDG 51 Arleigh Burke-class of the US Navy.
KDX III Batch II weapon systems
Based on the existing Sejong the Great-class the new AEGIS destroyers will feature several improvements including improved combat systems that can detect and track targets at greater distances and anti-ballistic missile capability with Raytheon’s SM-3 Block IB interceptors.
The KDX-III Batch II will be fitted with SM-2 Block IIIB as well and, possibly, the new SM-6 “multi-mission missile” capable of long-range Fleet Air Defense, Sea-Based Terminal defense, and Anti-Surface Warfare. The decision to procure SM-6 has not been made yet and will depend on budget.
According to our South Korean sources, the KDX III Batch II ships will feature a total of 88 vertical launch system (VLS) cells:
- 64x Mk41 VLS for US-made missiles
- 16x K-VLS
- 24x K-VLS II
K-VLS will be used to deploy K-SAAM (Korean Surface to Air Anti Missile), replacing the replace RIM-116 Rolling Airframe Missile (RAM). It features inertial mid-course guidance and a dual microwave and infrared homing seeker for terminal guidance. K-VLS will also deploy Hong Sang Eo (Red Shark) rocket-based torpedo (K-ASROC) and Haeryong Tactical Surface Launch Missile (TSLM) land attack cruise missile.
K-VLS II are larger cells currently being developed by Hanwha to launch the future long-range surface-to-air missile (150 Km range) Cheongung 3 (also known as L SAM). Naval News learned from a source at LIG Nex1, that the naval L SAM (which is still in conceptual phase) will only have minor modifications compared to the land-based variant. L SAM is intended to replace SM-2 in the ROK Navy.
Compared to the Batch I, which sports 16 SSM-700K Haeseong (C-Star) anti ship missiles, the Batch II ships will “only” have 8 of them.
While early renderings of KDX III Batch II ships showed them fitted with a RAM missile launcher, the destroyers will actually get the Phalanx CIWS as their last line of defense, alongside soft kill decoys (Rheinmetall MASS decoy launchers).
KDX III Batch II sensors and CMS
Lockheed Martin is in charge of delivering the AN/SPY-1D(V) multi-function radar as well as the AEGIS combat system for the KDX III Batch II ship. Talking to Naval News during MADEX 2019, Lockheed Martin representatives explained that the destroyers would get the Aegis Baseline 9.C2 derivative with software variant “KII” and BMD baseline 5, which allows the use of SM-3 Block IB. As of October 2019, the radar arrays for the first KDX III Batch II were already in production. The radar arrays and combat system will be tested in New Jersey in 2021 before delivery to South Korea.
Talking to Naval News at MADEX 2019, the KDX III program manager at HHI said the 1st steel cutting is set to take place in 2021 and delivery of the first in class ship is expected for 2024. HHI also provided us with the following details:
KDX III Batch II Characteristics:
- Light displacement: 8,300 tons
- Full load displacement: > 10,000 tons
- Length: 170 meters
- Breadth: 21 meters
- Speed: 30 knots
- Crew: 300 sailors