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Sejong the Great-class Guided Missile Destroyer

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during the 2008 Busan International Fleet Review.
The Sejong the Great-class guided missile destroyers (Sejongdaewang-Ham or Hangul: 세종대왕급 구축함), also known as KD-III, are guided missile destroyers of the Republic of Korea Navy. The lead ship was launched 25 May 2007, sponsored by Kwon Yang-sook, the First Lady of the Republic of Korea at the time and was commissioned in December 2008. The second ship was commissioned in August 2010. The third ship was commissioned in August 2012. The ROKN has committed itself to having six Sejong the Great-class destroyers.


  • Type: Guided Missile Destroyer
  • Service Period: 2008-Present
  • Characteristics:
    • Length: 544 feet 4 inches (165.91 meters)
    • Beam: 70 feet 2.5 inches (21.4 meters)
    • Draft: 20 feet 6.064 inches (6.25 meters)
    • Displacement: 8,500 tons standard displacement, 11,000 tons full load
  • Crew: 300-400
  • Propulsion: 4 General Electric LM2500 COGAG; two shafts, 100,000 total shaft horsepower (75 MW)
  • Range: 5,500 nautical miles (10,186 kilometers)
  • Speed: 30+ knots (55.56+ km/h)
  • Sensor Suite:
    • AN/SPY-1D(V) multi-function radar
    • AN/SPG-62 fire control radar
    • DSQS-21BZ hull mounted sonar
    • MTeQ towed array sonar system
    • Sagem Infrared Search & Track (IRST) system
  • Countermeasures
    • LIG Nex1 SLQ-200K Sonata electronic warfare suite
  • Armament:
    • 1 x 5"/62-caliber Mk.45 Mod 4 lightweight naval gun
    • 1 x 80-cell Mk.41 VLS (fires RIM-156 SM-2 Block IIIB/IV)
    • 1 x 48-cell Mk.41 VLS (fires 32 x Hyunmoo III land attack cruise missiles and 16 x K-ASROC Red Shark ASW Missiles)
    • 1 x 21-cell Mk.49 RAM Launcher
    • 1 x 30mm Goalkeeper CIWS
    • 6 x K745 LW Blue Shark torpedoes
  • Aircraft Carried: 2 x Westland Super Lynx Mk.99/99A or Sikorsky SH-60 Seahawk maritime helicopters

Unit Run[edit]

  • ROKS Sejong the Great (DDG-991)
  • ROKS Yulgok Yi I (DDG-992)
  • ROKS Seoae Yu Seong-ryong (DDG-993)
  • ROKS Myeongjong (DDG-994) - under construction
  • ROKS Yi Bok-nam (DDG-995) - under construction
  • ROKS Choi Hong Hi (DDG-996) - under construction
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