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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 velocity prediction program (VPP) is a computer program which solves for the performance of a sailing yacht in various wind conditions by balancing hull and sail forces. VPPs are used by yacht designers, boat builders, model testers, sailors, sailmakers, also America's Cup teams, to predict the performance of a sailboat before it has been built or prior to major modifications.
The Hunter 27-3 and Hunter 27X are a family of American sailboats that were both designed by Glenn Henderson and both first built in 2006. [1] [2] [3]The Hunter 27-3 was originally marketed by the manufacturer as the Hunter 27, but is now usually referred to as the 27-3 to differentiate it from the unrelated 1974 Hunter 27, 1989 Hunter 27-2 and later designs bearing the same name.
The Hunter 30T is an American sailboat that was first built in 1991. [1] [2]The Hunter 30T is a development of the 1988 Hunter 30-2 design. [1] [2]The design was originally marketed by the manufacturer as the Hunter 30, but is now usually referred to as the Hunter 30T to differentiate it from the unrelated 1973 Hunter 30 design and the 30-2, which was also marketed as the Hunter 30.
The boat has a draft of 7.42 ft (2.26 m) with the standard keel fitted. The boat is fitted with a Universal M-25 diesel engine of 30 hp (22 kW). The fuel tank holds 40 U.S. gallons (150 L; 33 imp gal) and the fresh water tank has a capacity of 40 U.S. gallons (150 L; 33 imp gal). The boat has hull speed of 7.44 kn (13.78 km/h).
The boat has a draft of 5.42 ft (1.65 m) with the standard keel. The boat is fitted with a fresh water tank with a capacity of 15 U.S. gallons (57 L; 12 imp gal). [1] [3] The boat has a PHRF racing average handicap of 126 with a high of 132 and low of 120. It has a hull speed of 6.95 kn (12.87 km/h). [2] [3]
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The boat has a draft of 6.83 ft (2.08 m) with the standard keel. [1] [3] The boat is fitted with a Japanese Yanmar 3GM diesel engine of 27 hp (20 kW) for docking and maneuvering. The fuel tank holds 20 U.S. gallons (76 L; 17 imp gal) and the fresh water tank has a capacity of 35 U.S. gallons (130 L; 29 imp gal).