On 15 May 1952, "Marsh" once again joined the battle line off the Korean coast. She patrolled the west coast, operating primarily in the Sochon-Do area, until the end of May. She then steamed to Okinawa for hunter-killer exercises, returning to Korea on 21 June. Taking up aircraft carrier screen duties, she operated with and in the Yellow Sea. In July, she again headed south, this time to serve with the Formosa Patrol, then on 22 August, returned to the battle line. She patrolled off the west Korean coast initially, but was moved to the east coast in late September to blockade. She participated periodically in the shelling of troop and transportation centers in the Songin and Wonsan areas. On 22 October, she sailed again to the Korean coast where she conducted patrols until steaming for Yokosuka and the United States on 14 November.