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Knight's Mechanical Encyclopedia (ed. Knight), F. (search)
ary to clean, paint, or repair the bottom of the dock, it is careened by the weight of water in the load chambers of one side, and the middle line is raised about five feet out of the water. The Royal Alfred, bearing the flag of the admiral on the station, and weighing 6,000 tons, was lifted by this dock, her keel resting on a central line of blocks arranged on the floor of the dock, the ship being shored up with timbers all round the top-sides. A similar dock was sent in sections to Carthagena, and lifted several vessels of from 3,800 to 5,600 tons, in one case (the Numancia ) supporting the vessel eighty days. Float′ing-har′bor. A breakwater of cages or booms, anchored and fastened together, and used as a protection to ships riding at anchor to leeward. Float′ing-light. 1. A light exhibited at the mast-head of a vessel moored on a spit or shoal where no adequate foundation exists for a permanent structure. The screw-pile, in affording a new means of founding struct<
Knight's Mechanical Encyclopedia (ed. Knight), S. (search)
ginia, who lived at the Temple Farm, near Yorktown, Va. He had been wounded at Blenheim, where he served with Marlborough. He was the first to cross the Blue Ridge and see the Shenandoah Valley. He was appointed commander of the expedition to Carthagena, but died at Annapolis, Md., June, 1740, as the troops were about to embark. He was buried in the mausoleum from which the Temple Farm derived its name. In this expedition the elder brother of George Washington served, and on his return namedhave been largely employed for constructions in the sea, especially for harbor dams, breakwaters, and quay walling. We may cite the moles of Dover and Alderney, in England, of Port Vendre, Cette, La Ciotat, Marseilles, and Cherbourg in France, Carthagena in Spain, Pola in the Adriatic, of Algiers and Port Said in Africa, and Cape Henlopen at the mouth of the Delaware. For the break water at Cherbourg artificial stone blocks of 712 cubic feet each were immersed The fortifications before Cope