 She decommissioned there 17 May 1947, to join the Atlantic Reserve Fleet, and remained at Orange, even after being struck from the Naval Vessel Register and transferred to the Maritime Commission (MARCOM) in 1961.On 9 May 1961, she joined the National Defense Reserve Fleet at Beaumont, Texas, where she remained until 19 April 1976, when she was withdrawn by the Navy to have her equipment removed.On 28 September 1976, "Mindanao" entered the James River NDRF, Lee Hall, Virginia, until she was finally withdrawn 12 March 1980, to become part of Florida's artificial reef program.