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A motorboat with an outboard motor. A motorboat or powerboat is a boat that is exclusively powered by an engine; faster examples may be called "speedboats".. Some motorboats are fitted with inboard engines, others have an outboard motor installed on the rear, containing the internal combustion engine, the gearbox and the propeller in one portable unit.
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Hull speed or displacement speed is the speed at which the wavelength of a vessel's bow wave is equal to the waterline length of the vessel. As boat speed increases from rest, the wavelength of the bow wave increases, and usually its crest-to-trough dimension (height) increases as well. When hull speed is exceeded, a vessel in displacement mode ...
A hydroplane (or hydro, or thunderboat) is a fast motorboat, where the hull shape is such that at speed, the weight of the boat is supported by planing forces, rather than simple buoyancy. A key aspect of hydroplanes is that they use the water they are on for lift rather than buoyancy, as well as for propulsion and steering : when travelling at ...
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2. (With oars) to push against the water with the oar in the opposite direction than normally used for moving the boat forward. This is used to slow the speed of the boat, or to move astern when manoeuvring. [3] back and fill A method of keeping a square-rigged vessel under control while drifting with the tide along a narrow channel.
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Center console (boat) Centreboard; Chain; Chain girth; Chainplate; Chains (nautical) Channel (geography) Charlie Noble (chimney) Chief engineer; Chief mate; Chine (boating) Circle of death (boating) Cold ironing; Companionway; Compartment (ship) Conn (nautical) Consort (nautical) Constant bearing, decreasing range; Cuddy (cabin) Cunningham ...