USS Alpaco was a cargo ship that served in the United States Navy from November to December 1918.

USS Alpaco in port in late 1918.
History
United States
NameUSS Alpaco
NamesakePrevious name retained
BuilderHodge Shipbuilding Company, Moss Point, Mississippi
Completed1918
Acquired18 November 1918
Commissioned18 November 1918
Decommissioned19 December 1918
Stricken20 January 1919
FateTransferred to United States Shipping Board 19 December 1918; scrapped by mid-1924
NotesUnder U.S. Shipping Board control as SS Alpaco 1918–1924
General characteristics
TypeCargo ship
Tonnage2,500 Gross register tons
Length268 ft 0 in (81.69 m)
Beam45 ft 2 in (13.77 m)
Draft23 ft 6 in (7.16 m) mean
PropulsionSteam engine
Speed10 knots
Complement57
ArmamentNone

SS Alpaco was built in 1918 as a wooden-hulled commercial cargo ship by the Hodge Shipbuilding Company at Moss Point, Mississippi, for the United States Shipping Board. Upon completion, she was transferred to the U.S. Navy, which took possession of her on 18 November 1918 and commissioned her the same day as USS Alpaco at the Navy Yard Dock in New Orleans, Louisiana. She was never given a naval registry identification number, but was assigned to the Naval Overseas Transportation Service and earmarked for coastwise service.

The Navy conducted sea trials of Alpaco on 3 December 1918 with representatives of Hodge Shipbuilding on board. She was unable to maintain maximum revolutions for her engines, and a fire broke out in a coal bunker that took a little over 45 minutes to extinguish, the firefighters having to rip off the galvanized sheet iron from the engine room bulkhead to enable them to use their hoses to better advantage. Alpaco had to be assisted back into her berth by the tug USS Underwriter.

Condemned as "unseaworthy" after this fiasco, Alpaco remained pierside at her berth until decommissioned there on 19 December 1918 and simultaneously returned to the U.S. Shipping Board. As SS Alpaco, she remained in the Shipping Board's hands until she was scrapped by mid-1924.

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