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carley float
The Carley float (sometimes Carley raft) was a form of invertible liferaft designed by American inventor Horace Carley (1838-1918).〔(【引用サイトリンク】title=Horace Carley: Unknown Inventor )〕 Supplied mainly to warships, it saw widespread use in a number of navies during peacetime and both World Wars until superseded by more modern rigid or inflatable designs. Carley was awarded a patent in 1903 after establishing the Carley Life Float Company of Philadelphia.
==Description==
The Carley float was formed from a length of copper or steel tubing 12-20 inches (30–50 cm) in diameter bent into an oval ring.〔
〕 The ring was surrounded by a buoyant mass of kapok or cork, and then covered with a layer of canvas rendered waterproof via painting or doping.〔 - ''Life Raft''. Horace S. Carley. (Filed May 14, 1902; Issued July 21, 1903.)〕 The metal tube was divided into waterproof compartments with vertical baffles.〔 The raft was thus rigid, and could remain buoyant, floating equally well with either side uppermost, even if the waterproof outer was punctured. The floor of the raft was made from a wood or webbing grating. Boxes containing paddles, water, rations and survival equipment were lashed to the floor grating. Men could either sit around the rim of the raft, or, if in the water, cling to rope loops strung around its edge. The largest model could accommodate up to fifty men, half inside the raft, and the others in the water holding onto the ropes.
Some variants included a calcium flare that would automatically ignite on immersion in water. The flare could however expose a raft to hostile fire, as then-Lt. Stuart Bonham Carter found during the 1918 Zeebrugge Raid as he escaped the scuttled blockship HMS ''Intrepid''. Only the smoke of the burning vessel behind him prevented him from being targeted.
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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