ROKS Yulgok Yi I (DDG-992)

ROKS Yulgok Yi I (DDG-992) is the second ship of the Sejong the Great-class destroyers that was built for the Republic of Korea Navy. She was designed around the Aegis Combat System and was named after philosopher and scholar of the Joseon Dynasty, Yulgok Yi I.[1]

ROKS Yulgok Yi I on 22 December 2015
South Korea
Name
  • Yulgok Yi I
  • (율곡이이/栗谷李珥)
NamesakeYulgok Yi I
BuilderDSME
Launched14 November 2008
Commissioned31 August 2010
IdentificationPennant number: DDG-992
StatusActive
General characteristics
Class and typeSejong the Great-class destroyer
Displacement
  • 8,500 tons standard displacement
  • 11,000 tons full load
Length166 m (544 ft 7 in)
Beam21.4 m (70 ft 3 in)
Draft6.25 m (20 ft 6 in)
Propulsion
Speedexceeds 30 knots (56 km/h; 35 mph)
Range5,500 nautical miles (10,200 km; 6,300 mi)
Endurance30 days
Complement300 crew
Sensors and
processing systems
  • AN/SPY-1D(V) multi-function radar
  • AN/SPG-62 fire control radar
  • DSQS-21BZ-M hull mounted sonar
  • SQR-220K towed array sonar system
  • Sagem Infrared Search & Track (IRST) system
Electronic warfare
& decoys		LIG Nex1 SLQ-200K Sonata electronic warfare suite
Armament
Aircraft carried2 × Super Lynx or SH-60 Seahawk
Aviation facilitiesHangar and helipad

Background

The ship features the Aegis Combat System (Baseline 7 Phase 1) combined with AN/SPY-1D multi-function radar antennae.[1]

The Sejong the Great class is the third phase of the South Korean navy's Korean Destroyer eXperimental (KDX) program, a substantial shipbuilding program, which is geared toward enhancing ROKN's ability to successfully defend the maritime areas around South Korea from various modes of threats as well as becoming a blue-water navy.[2]

At 8,500 tons standard displacement and 11,000 tons full load, the KDX-III Sejong the Great destroyers are by far the largest destroyers in the South Korean Navy, and indeed are larger than most destroyers in the navies of other countries.[3] and built slightly bulkier and heavier than Arleigh Burke-class destroyers or Atago-class destroyers to accommodate 32 more missiles. As such, some analysts believe that this class of ships is more appropriately termed a class of cruisers rather than destroyers.[4] KDX-III are currently the largest ships to carry the Aegis combat system.[5]

Construction and career

ROKS Yulgok Yi I was launched on 14 November 2008 by Daewoo Shipbuilding & Marine Engineering. She was commissioned into Republic of Korea Navy service on 31 August 2010.

RIMPAC Exercise

Republic of Korea Navy has actively participated in the recent iterations of the Rim of the Pacific Exercise or RIMPAC, which is held biennially from Honolulu, Hawaii. The exercises seeks to enhance interoperability among Pacific Rim armed forces, as a means of promoting stability in the region to the benefit of all participating nations. ROKS Yulgok Yi I has participated in the exercises on 2012 and 2018.[6]

  • ROKS Yulgok Yi I Gallery
  • USS Blue Ridge and ROKS Yulgok Yi I sail in formation in the Sea of Japan on March 6, 2012.
    USS Blue Ridge and ROKS Yulgok Yi I sail in formation in the Sea of Japan on March 6, 2012.
  • ROKS Yulgok Yi I launching a SM-2 anti-aircraft missile during RIMPAC 2012.
    ROKS Yulgok Yi I launching a SM-2 anti-aircraft missile during RIMPAC 2012.
  • ROKS Yulgok Yi I firing her main gun on 6 February 2013.
    ROKS Yulgok Yi I firing her main gun on 6 February 2013.
  • A band plays aboard ROKS Yulgok Yi I during the 70th Anniversary of founding Republic of Korea Navy on 10 November 2015.
    A band plays aboard ROKS Yulgok Yi I during the 70th Anniversary of founding Republic of Korea Navy on 10 November 2015.
  • ROKS Yulgok Yi I during the National Fleet Review on 17 October 2015.
    ROKS Yulgok Yi I during the National Fleet Review on 17 October 2015.
  • ROKS Yulgok Yi I during the National Fleet Review on 17 October 2015.
    ROKS Yulgok Yi I during the National Fleet Review on 17 October 2015.
  • ROKS Yulgok Yi I during the National Fleet Review on 17 October 2015.
    ROKS Yulgok Yi I during the National Fleet Review on 17 October 2015.
  • From front to back, USS Momsen, ROKS Seoae Ryu Seong-ryong, USS Decatur, ROKS Yulgok Yi I and ROKS Kwang Myung on 22 May 2016.
    From front to back, USS Momsen, ROKS Seoae Ryu Seong-ryong, USS Decatur, ROKS Yulgok Yi I and ROKS Kwang Myung on 22 May 2016.
  • From front to back, USS Momsen, ROKS Seoae Ryu Seong-ryong, USS Decatur, ROKS Yulgok Yi I and ROKS Kwang Myung on 22 May 2016.
    From front to back, USS Momsen, ROKS Seoae Ryu Seong-ryong, USS Decatur, ROKS Yulgok Yi I and ROKS Kwang Myung on 22 May 2016.

References
  1. "Sejong the Great Class / KDX-III Class Destroyer". Naval Technology. Retrieved 2020-08-07.
  2. "Sejong the Great Sejongdaewang KDX-III Class AEGIS Destroyer Republic of Korea ROK Navy 세종대왕급 구축함 Yulgok Yi I Seoae Yu Seong-ryong Hyundai Heavy Industries HHI DSME 대한민국 해군 datasheet pictures photos video specifications". www.navyrecognition.com. Retrieved 2020-08-07.
  3. "Koreas KDX-III AEGIS Destroyers". Archived from the original on 2009-12-11. Retrieved 2010-03-08.
  4. "Sejong the Great Class Guided Missile Destroyer." http://www.military-today.com/navy/sejong_the_great_class.htm
  5. "Aegis Weapon System Verified During Korean Navy Ship TrialsDefenceTalk.com - at DefenceTalk". www.defencetalk.com. Archived from the original on 2010-12-05. Retrieved 2010-10-21.
  6. "RIMPAC 2012: participating vessels by country". Naval Technology. 2012-06-17. Retrieved 2020-08-07.
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