The USS Bagley (DD-185) was a Wickes-class destroyer launched on October 19, 1918, by the Newport News Shipbuilding and Dry Dock Company in Virginia. Designed as a relatively fast and maneuverable vessel, she served primarily in the immediate post-World War I period. She was commissioned on August 27, 1919, and reported to the Atlantic Fleet, where she participated in various maneuvers and training exercises across the Atlantic and Caribbean regions between August 1919 and July 1920. Constructed with the typical characteristics of the Wickes class, USS Bagley was intended for fleet escort duties, featuring a flush deck design, and armed with four 4-inch guns, torpedo tubes, and depth charge equipment, though specific armament details are not provided in the source. After her active service, she was placed in reserve on July 16, 1920, and out of commission by July 12, 1922, at Philadelphia. Between April 1932 and April 1934, she was loaned to the Coast Guard, serving in a patrol capacity during that period. The vessel's name was dropped in 1935, and she was designated DD-185. She was renamed USS Doran on December 22, 1939, in honor of John James Doran, and was recommissioned on June 17, 1940, joining the Atlantic Squadron. However, her active service in the U.S. Navy was brief; she was decommissioned at Halifax, Nova Scotia, on September 22, 1940, and transferred to the Royal Navy under the Destroyers for Bases Agreement. Renamed HMS St. Mary's (I-12), she arrived in Belfast, Northern Ireland, on October 8, 1940. As part of the 1st Minelaying Squadron, she participated in early minelaying operations in Denmark Strait and escorted convoys along the Atlantic coast. Throughout 1941, she was heavily involved in minelaying missions and shipping defense efforts, including a collision with the transport Royal Ulsterman in August. Her service continued with minelaying and convoy escort duties through 1942 and 1943. She was paid off in February 1944 in Tyne and remained there until her scrapping after the war, marking her contribution to Atlantic naval operations during World War II.

This description has been generated using GPT-4.1-NANO based on the Vessel's wikidata information and then modified by ShipIndex.org staff.