Sejong the Great-class Guided Missile Destroyer

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.

Specifications

 * Type: Guided Missile Destroyer
 * Service Period: 2008-Present
 * Characteristics:
 * Length: 550 feet 11 inches (167.92 meters meters)
 * Beam: 70 feet 3 inches (21.41 meters)
 * Draft: 20 feet 6 inches (6.25 meters)
 * Displacement: 8,050 tons (Standard); 11,200 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) at 20 knots (37.04 km/h)
 * Speed: 30+ knots (55.56+ km/h)
 * Sensor Suite:
 * AN/SPY-1D(V) multi-function radar
 * AN/SPG-62 fire control radar x 3
 * DSQS-21BZ hull mounted Multifunction Sonar sonar
 * SQR-220K Black Dragon Towed Array Sonar
 * Sagem Infrared Search & Track (IRST) system
 * Countermeasures
 * LIG Nex1 SLQ-200(V)K Sonata electronic warfare suite
 * SLQ-261K TACM torpedo decoy
 * KDagaie Mk.2 Chaff/Flare Launcher x 4
 * Armament:
 * 1 x 5"/62-caliber Mk.45 Mod 4 lightweight naval gun
 * 128 x VLS cells (1 x 80-cell Mk.41, 1 x 48-cell KVLS) - fires RIM-156 SM-2ER Blk.IIIA/B, Red Shark K-ASROC, and Hyunmoo-3C LACMs)
 * 4 x 4-cannister SSM launchers (fires SSM-700K Haeseong anti-ship missiles)
 * 2 x 12.75" triple torpedo tubes (fires Blue Shark lightweight torpedoes)
 * 1 x 30mm/77-caliber Goalkeeper CIWS
 * 1 x 21-cell Mk.49 RAM Launcher
 * Aircraft Carried: 2 x Westland Super Lynx Mk.99/99A or Sikorsky SH-60 Seahawk maritime helicopters

Unit Run

 * 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