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	USS Alcedo
History
United States
Name	USS Alcedo
Builder	D. and W. Henderson and Company, Glasgow
Launched	24 June 1895
Acquired	by purchase, 1 June 1917
Commissioned	28 July 1917
Stricken	17 December 1917
Fate	Sunk 5 November 1917
General characteristics
Type	Yacht
Displacement	981 long tons (997 t)
Length	275 ft (84 m)
Beam	31 ft (9.4 m)
Draft	16 ft 4 in (4.98 m)
Speed	12 kn (14 mph; 22 km/h)
Complement	94 officers and enlisted
Armament	4 × 3 in (76 mm) guns, 2 × machine guns

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. and W. Henderson and Company. She was purchased by the Navy on 1 June 1917 from Mr. George W. C. Drexel of Philadelphia, Pennsylvania, and commissioned at New York City on 28 July 1917.

Service history

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 troop transport steamer SS Antilles, which had been sunk by a submerged German U-boat. Twelve days later, she saved another 85 survivors from SS Finland.

On the afternoon of 4 November, Alcedo departed Quiberon Bay, France with Aphrodite Noma, and Kanawha II as the escort for a convoy composed of SS Florence Luckenbach, SS Artemis, and SS Newport News bound for Brest. At about 01:45 the following morning, while the convoy was steaming some 75 mi (121 km) west of Belle He, an Alcedo crewman reported sighting a surfaced U-boat. Almost instantaneously with the sounding of the alarm, the German submarine UC-71 fired a single torpedo in a surface attack. (Some Alcedo records suggest that the U-boat submerged first, but the official German account confirms a surface attack.) Alcedo attempted to change course to evade the torpedo, but she answered her helm sluggishly. The torpedo struck the yacht on the port side well forward, and Alcedo began to settle fast. Soon after the hit, the ship's commanding officer ordered her abandoned, and she went down in eight minutes. The yacht lost one officer, Lieutenant, junior grade John Melvin, and 20 sailors in the action to both wounds and drowning. The remainder of her crew took to the boats in two separate groups. After a long time rowing, one group — which included the commanding officer — was picked up by a French torpedo boat. The other was towed to safety by French fishermen.