Initially named Craig, the ship was launched on 21 March 1943 by sponsor Mrs. Q. Abercrombie-St. John at Tampa Shipbuilding Co., Inc., of Tampa, Florida. The spelling of the ship's name was changed to Crag on 3 August 1944. She was completed at the Charleston Navy Yard and commissioned on 1 August 1945.
Crag served with the Naval Mine Warfare Test Station, Solomons Island, Maryland, until 17 December 1945 when she sailed upriver to Washington, D.C., for leave and upkeep. On 4 January 1946 she sailed for the west coast arriving at San Pedro, California, 3 February. She remained there until 21 March when she sailed to Hong Kong, calling at Pearl Harbor, Eniwetok, and Guam on her outward bound passage. She swept mines in the East Hainan Straits until 16 June when she cleared Hong Kong, returning to San Francisco, California, 14 August.
Reassigned to the Atlantic Fleet, Crag sailed from San Francisco, California, 4 October 1946 and arrived at Charleston, South Carolina, 3 November for overhaul. From 9 February 1947 to 26 May she served at the U.S. Navy Mine Countermeasures Station at Panama City, Florida, and after overhaul, joined in exercises in Chesapeake Bay from 13 October to 28 November. On 2 December she sailed from Charleston and visited New Orleans, Louisiana, from 8 December to 20 December before reporting to Orange, Texas, 22 December. There Crag was placed out of commission in reserve 19 March 1948. She was sold to Mexico in 1962. Crag received one battle star for her post-World War II minesweeping. In 1962, Crag was sold to Mexico.
The former Crag was acquired by the Mexican Navy in October 1962 and renamed ARM DM-15. Her ultimate fate is not reported in secondary sources.