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ROKS Seoae Ryu Seong-ryong (DDG-993)

Guided-Missile Destroyer Warship

South Korea | 2012

"Granted excellent performance and a broad range of weaponry, ROKS Seoae Ryu Seong-ryong DDG-993 remains a powerful South Korean warship."

Power & Performance
Those special qualities that separate one sea-going vessel design from another. Performance specifications presented assume optimal operating conditions for ROKS Seoae Ryu Seong-ryong (DDG-993).
COGAG (COmbined Gas-And-Gas): 4 x General Electric LM2500 gas turbines developing 100,000 horsepower driving 2 x Shafts astern.
31.5 kts
36.2 mph
Surface Speed
5,475 nm
6,300 miles | 10,139 km
The bow-to-stern, port-to-starboard physical qualities of ROKS Seoae Ryu Seong-ryong (DDG-993).
544.6 ft
165.99 meters
O/A Length
70.2 ft
21.40 meters
20.5 ft
6.25 meters
Available supported armament and special-mission equipment featured in the design of ROKS Seoae Ryu Seong-ryong (DDG-993).
1 x 5" (127mm) /L62 caliber Mk 45 Mod 4 turreted deck gun (forecastle).
1 x 80-cell Mk 41 Vertical Launch System (VLS) housing SM-2 Block IIIB/IV Surface-to-Air Missiles (SAMs).
1 x 48-cell K-VLS housing K-ASROC (Anti-Submarine ROCket) "Red Shark" missiles OR "Hyunmoo III" land-attack cruise missiles.
16 x SSM-700K "Haeseong" Anti-Ship Missiles (ASMs).
2 x Triple torpedo tubes supporting K745 "Blue Shark" torpedo family.
1 x Rolling Airframe Missile (RAM) Block 1 SAM launcher.
1 x 30mm "Goalkeeper" Close-In Weapon System (CIWS).
Air Arm
Available supported fixed-wing / rotary-wing aircraft featured in the design of ROKS Seoae Ryu Seong-ryong (DDG-993).
1 OR 2 x Medium-lift navy helicopter(s) launched/retrieved from stern helipad; supported through integrated hangar structure; typically AgustaWestland "Super Lynx" or Sikorksy SH-60 "Seahawk" types equipped for Anti-Submarine Warfare (ASW) sorties.
Ships-in-Class (3)
Notable series variants as part of the ROKS Seoae Ryu Seong-ryong (DDG-993) family line as relating to the Sejong the Great-class group.
ROKS Sejong the Great (DDG-991); ROKS Yulgok yi (DDG-992); ROKS Seoae Ryu Sungryong (DDG-993)
Authored By: Staff Writer | Last Edited: 08/11/2021 | Content ©www.MilitaryFactory.com | The following text is exclusive to this site; No A.I. was used in the generation of this content.

ROKS Seoae Ryu Seong-ryong (DDG-993) forms the third of three active (2021) guided-missile destroyers of the Sejong the Great-class. The class is expected to encompass six total ships built to the design standard and is led by ROKS Sejong the Great (DDG-991) herself. ROKS Seoae Ryu Seong-ryong was constructed by the specialists of Hyundai Heavy Industries (HHI) of South Korea and was launched on March 24th, 2011. She was formally commissioned into the inventory of the Republic of Korea Navy (RoKN) on August 30th, 2012.

Named after historical Korean figure Ryu Seong-ryong, she carries Pennant Number DDG-993.

The class exists as a multi-mission / multirole warship in the 7,650 ton range, displacement ballooning up to 10,600 tons under extreme full loads. ROKS Sejong the Great represents the first of the Batch I warships concluding with ROKS Seoae Ryu Seong-ryong before the shift to Batch II ships in the class. The type serves as one of the more important surface combatants available to the South Korean Navy in the frontline role, capable of deterring and engaging air, land, sea, and undersea targets with equal lethality. Sejong the Great-class ships are broadly comparable to the American Navy's Arleigh Burke-class if only dimensionally larger with qualities more akin to a cruiser than traditional modern destroyer.

The destroyers are fielded with two other classes, the "Destroyer Helicopter" minded Chungmugong Yi Sunshin-class (six ships) and the older Kwanggaeto the Great-class (three ships).

Like other modern ships in the South Korean fleet, ROKS Seoae Ryu Seong-ryong is the product of the Korean Destroyer eXperimental (KDX) initiative seeking to equip the Navy service with a broad range of destroyer types to accomplish enhanced roles at different displacements. This includes the 3,800-ton "KDX-1", the 5,500-ton "KDX-II", the 11,000-ton "KDX-III" (with Aegis), and finally the 5,500 to 7,500-ton "KDX-IIA" (also with Aegis). The core value is a complete modernization of fighting strength for the service which is regularly tested by neighboring North Korea and China in the region.

As completed, ROKS Seoae Ryu Seong-ryong sports a running length of 544.6 feet, a beam of 70.2 feet, and a draught of 20.5 feet. The propulsion scheme is of COmbined Gas-And-Gas (COGAG) arrangement involving a collection of 4 x General Electric LM2500 gas turbines developing 100,000 horsepower to drive 2 x Shafts astern. This allows the ship to reach speeds in excess of 30 knots while reaching out to a range of 5,500 nautical miles (6,300 miles).

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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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Global operator(s) of the ROKS Seoae Ryu Seong-ryong (DDG-993). Nations are displayed by flag, each linked to their respective national naval warfare listing.

Shipbuilder(s): Hyundai Heavy Industries (HHI) - South Korea
National flag of South Korea

[ South Korea ]
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Image of the ROKS Seoae Ryu Seong-ryong (DDG-993)
Image from the Republic of Korea Navy; Public Release.

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