It was the second ship to be named Ostrich by the Navy, and was laid down 6 February 1941, by the Herreschoff Mfr.

After completion of fitting out, Ostrich departed Boston, Massachusetts, 29 July and sailed for Hampton Roads, Virginia, where she arrived 31 July and reported to Commandant, 5th Naval District for type training at Yorktown, Virginia.

She was then attached to an Inshore Patrol Squadron and remained in this capacity until late November, when in company with USS Courlan (AMc-44) and USS Develin (AMc-45), she sailed to New Orleans, Louisiana, arriving 5 December and reporting to Commandant 8th Naval District.

She was struck from the Naval Vessel Register 21 January 1946 and transferred to the Maritime Commission on 21 March 1947 for disposal.

This article incorporates text from the public domain Dictionary of American Naval Fighting Ships.