ROKS Sejong the Great (DDG-991)

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]

ROKS Sejong the Great was launched on 25 May 2007 by Hyundai Heavy Industries. She was commissioned into the ROK Navy on 22 December 2008.

• ROKS Sejong the Great Gallery
• 
  ROKS Sejong the Great arriving in Pearl Harbor during RIMPAC 2010.
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  ROKS Sejong the Great during RIMPAC 2010.
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  ROKS Sejong the Great alongside USS Chosin during RIMPAC 2010.
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  ROKS Sejong the Great during RIMPAC 2010.
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  ROKS Sejong the Great alongside USS McClusky and HMCS Algonquin during RIMPAC 2010.