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USS Orion (AC-11)
USS ''Orion'' (AC–11) was a collier of the United States Navy. The ship was laid down by the Maryland Steel Co., Sparrows Point, Maryland, on 6 October 1911, launched on 23 March 1912, and commissioned at Norfolk on 29 July 1912.
==Construction and design==
The ship's launch set a new world's record for rapid construction. The ship, and sister , were built on the patented Isherwood System of longitudinal framing with propulsion machinery in the stern. Cargo space was provided by six large, self trimming, coal holds for of coal and four deep tanks forward under the lower deck combined with tanks in the inner bottom under the holds for of oil cargo. The coal holds had two hatches each, except for the one hatch for the forward hold, and the contract requirement was for each hatch being able to handle per hour which was met in the official test by a figure of per hour. An advantage of the Isherwood framing was a weight saving that allowed ''Orion'' to carry the specified deadweight on a draft of instead of the contracted draft at that load of allowing for an increase of of coal at specified draft. Propulsion was by two triple expansion steam engines with cylinders of , and diameter and a stroke with steam from three double ended Scotch boilers driving two three bladed propellers with mean pitch with average trial speed of achieved.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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