Hull (watercraft), Watertight buoyant body of a ship or boat.
A hull is the watertight body of a ship, boat, or flying boat. The hull may open at the top (such as a dinghy), or it may be fully or partially covered with a deck. Atop the deck may be a deckhouse and other superstructures, such as a funnel, derrick, or mast. The line where the hull meets the water surface is called the waterline.
There is a wide variety of hull types that are chosen for suitability for different usages, the hull shape being dependent upon the needs of the design.
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