From: Dictionary of American Naval Fighting Ships, Vol. II p 184
Coral
A stony mass formed from the skeletons of various sea animals, the basic formation of many tropical islands, reefs, and atolls.
Coral (PY--15) was built in 1913 by Pusey and Jones Co., Wilmington, Del.; acquired by the Navy 25 November 1940; and commissioned 27 February 1941, Lieutenant Commander W. H. Meyer in command.
Coral made two Naval Reserve cruises from Philadelphia during June 1941, then sailed 30 August for Newport and inshore patrol duty until 8 October. After training at Guantanamo Bay, she served at Key West with Service Squadron 9 until decommissioned 12 August 1943. Recommissioned 27 August to escort a convoy t.o Norfolk, she arrived 6 September, and was again decommissioned 10 September 1943. Coral was sold 15 July 1947.