"Maddox" returned to Korea 7 September and assumed coastal blockade and bombardment duties. She continued this assignment, which included a diversionary bombardment of Samchok coordinated with the Inchon landings on 15 September, until departing for the United States early in January 1951. Arriving at San Diego on 31 January 1951, she served as a training ship and underwent overhaul before departing 1 December 1951 for her second Korean duty. Through February 1952, she screened carriers off the east coast of Korea and provided shore bombardment support for the U.N. land forces. During March she operated with the Taiwan Patrol Force, returning to Korea in April. From 16 April through 17 May she participated in the siege of Wonsan, following which she resumed screening duties for fast carriers.