Dry dock
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A dry dock is used for the construction, maintenance, and repair of ships, boats, and other watercraft. There are several basic types of dry docks: Graving or Basin Docks, Floating Dry Docks, Marine R
U.S. Navy submarine USS Greeneville in a graving dock
A US Navy littoral combat ship in a floating drydock, NASSCO 2012
A US Navy frigate on a marine railway drydock
Floating Dock. Woodcut from Venice (1560)
Careening
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Careening is a method of gaining access to the hull of a sailing vessel without the use of a dry dock. It is used for cleaning or repairing the hull. Before ship's hulls were protected from marine gro
Dry dock
…protected from the elements and avoid the damage caused by undue exposure. Before the 15th century, when the hull below the waterline needed attention, careening was practised: at high tide the vessel was floated over a beach of hard sand and allowed to rest on one side when the tide receded. An account of 1434…
An Old Whaler Hove Down For Repairs, Near New Bedford, a wood engraving drawn by F. S. Cozzens and published in Harper's Weekly, December 1882
HMS Formidable careened in Malta Dockyard, 31 January 1843
A diagram of careening, from the Lärobok i sjömanskap (Textbook of Seamanship) by Wilhelm Linder, 1896