KDX-IIA is an Aegis Combat System armed variant of the KDX-II, Chungmugong Yi Sun-shin-class destroyer of the Republic of Korea Navy (ROKN). As of 2011 ROKN planned to build at least 6 ships of this class with a proposed displacement of 5500 ~ 7500 tons over the 2019 to 2026 time frame. It is the final part of the Korean Destroyer eXperimental pro...