Aboard is a crew of 300 and installed systems include the AN/SPY-1D(Y) multi-function radar suite, the AN/SPG-62 fire control radar, and the Sagem InfraRed Search and Track (IRST) system. Two sonar units are provided, the hull-mounted DSQS-21BZ-M and the towed SQR-220K array. The Electronics Warfare (EW) suite is the LIG Nex1 SLQ-200K series. ROKS Seoae Ryu Seong-ryong is equipped with the powerful American-developed "AEGIS" combat system offered by defense powerhouse Lockheed Martin.
Armament begins with the 5" (127mm) /L62 caliber Mk 45 Mod 4 turreted deck gun found on the forecastle. There is an 80-cell Mk 41 series Vertical Launch System (VLS) for SM-2 Block IIIB/IV Surface-to-Air Missiles (SAMs) as well as a 48-cell K-VLS housing K-ASROC "Red Shark" missiles or "Hyunmoo III" series land-attack cruise missiles. Beyond this are 2 x Triple torpedo tubes supporting the K745 "Blue Shark" torpedo family, 1 x Rolling Airframe Missile (RAM) Block 1 Close-In Weapon System (CIWS), and 1 x 30mm "Goalkeeper" CIWS.
The profile of the ship showcases a clean, sleek design appearance. The hull line runs unbroken from bow to stern. Aft of the deck gun is a VLS emplacement followed by the bridge superstructure. THe mastworks are partially exposed in the arrangement atop the bridge superstructure while the section leads to the low-profile, enclosed smoke funnels at midships. Directly amidships is a collection of missile launchers crossed over one another for optimal engagement angles. The aft smoke funnels are integrated as part of the aft superstructure component which then steps down to the hangar / helipad area of the stern. The helipad / hangar can support up to two navalized medium-lift helicopter types equipped for the Anti-Submarine Warfare (ASW) role.
As of this writing (2021), ROKS Seoae Ryu Seong-ryong maintains an active status in the RoKN fleet and would be called upon to answer any aggression from North Korea, China, or other belligerent regional player.
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