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.[4]At 8,500 tons standard displacement and 11,000 tons full load, the KDX-III Sejong the Great destroyers are the largest destroyers in the South Korean Navy and larger than most destroyers in the navies of other countries.[5] They are 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.[6] KDX-III are currently the largest ships to carry the Aegis combat system[7] Wikipedia (the first screenshot is inside of the sukhoi su-57 Felon)