High Quality Content by WIKIPEDIA articles! USS Alcedo (SP-166) was a yacht in the United States Navy. She was the first American vessel lost in World War I. Alcedo was built in 1895 at Glasgow, Scotland, by D. & W. Henderson & Company, Ltd. She was purchased by the Navy on 1 June 1917 from Mr. George W. C. Drexel of Philadelphia, Pennsylvania, and commissioned at New York on 28 July 1917, Lieutenant Commander William T. Conn, Jr., in command. Assigned to the Patrol Force, Alcedo departed Newport, Rhode Island on 5 August 1917. Steaming via Newfoundland and the Azores, the yacht arrived at Brest, France on the 30th. During her brief Navy career, the yacht conducted anti-submarine patrols and convoy-escort missions along the French coast. On two occasions, she rescued crew members of torpedoed merchantmen. On 17 October, the little warship picked up 118 men from the steamer SS Antilles. Twelve days later, she saved another 85 survivors from SS Finland.