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Cal 3-27
The Cal 3-27 is an American sailboat, that was designed by William Lapworth and first built in 1983. The Cal 3-27 is a development of the Cal 2-27, which was in turn a development of the Cal 27. The Cal 3-27 was also marketed as the Cal 27 Mk III and then later just as the Cal 27. Production The boat was built by Cal Yachts/ Jensen Marine in the United States between 1983 and 1985, but it is now out of production. Design The Cal 3-27 is a small recreational keelboat, built predominantly of fiberglass, with wood trim. It has a masthead sloop rig, an inboard motor, an internally-mounted spade-type rudder and a fixed fin keel. It displaces and carries of ballast. The boat has a draft of with the standard keel and with the optional shoal draft keel. A tall mast was also an option with a main sail luff ("P" parameter) higher. The boat has a hull speed of . See also *List of sailing boat types Related development *Cal 27 * Cal 2-27 Similar sailboats *Aloha 27 The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
William Lapworth
Charles William Lapworth (12 December 1919 – 3 April 2006) was an Americans, American naval architect who designed a large number of sailboats, many of them for Cal Yachts. He was active as a designer from the early 1950s until the 1980s. Described as "one of the foremost West Coast naval architects in the post-World War II period", he has been nominated to the US National Sailing Hall of Fame. Early life Born on 12 December 1919 in Detroit, Michigan. He went to the University of Michigan, completing a degree in marine engineering and naval architecture. He went on to serve in the US Navy in World War II as an officer in the bureau of ships at Quincy, Massachusetts. He later served at naval repair base at San Diego. Professional life After the war Lapworth moved to California and became partners in a yacht design business with Merle Davis in Los Angeles. In less than a year Davis had died, leaving Lapworth to run the business alone. He earned some income by doing marine surve ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hull Speed
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 will appear to be climbing up the back of its bow wave. From a technical perspective, at hull speed the bow and stern waves interfere constructively, creating relatively large waves, and thus a relatively large value of wave drag. Ship drag for a displacement hull increases smoothly with speed as hull speed is approached and exceeded, often with no noticeable inflection at hull speed. The concept of hull speed is not used in modern naval architecture, where considerations of speed/length ratio or Froude number are considered more helpful. Background As a ship moves in the water, it creates standing waves that oppose its movement. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hullmaster 27
The Hullmaster 27, also called the HM-27, is a Canadian sailboat, that was designed by Edward S. Brewer and Robert Walstrom and first built in 1974. The design is out of production. Production The boat was built in Canada by Hullmaster Boats as the Hullmaster 27 and DS Yachts as the HM-27, with 40 examples completed. Design The Hullmaster 27 is a small recreational keelboat, built predominantly of fiberglass, with wood trim. It has a masthead sloop rig, a skeg-mounted rudder and a fixed fin keel. It displaces and carries of ballast. The boat has a draft of with the standard keel. The boat has a PHRF racing average handicap of 225 with a high of 222 and low of 231. It has a hull speed of . See also *List of sailing boat types Similar sailboats *Aloha 27 *Cal 27 * Cal 2-27 *Cal 3-27 The Cal 3-27 is an American sailboat, that was designed by William Lapworth and first built in 1983. The Cal 3-27 is a development of the Cal 2-27, which was in turn a development o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hotfoot 27
The Hotfoot 27 is a Canadian sailboat that was designed by Doug Hemphill as racer-cruiser and first built in 1981.Sherwood, Richard M.: ''A Field Guide to Sailboats of North America, Second Edition'', pages 186-187. Houghton Mifflin Company, 1994. Production The design was built by Hotfoot Boats in Canada, but the company is no longer in business and the boat design is now out of production. Design The Hotfoot 27 is a recreational keelboat, built predominantly of fibreglass, with wood trim. It has a fractional sloop rig, a raked stem, a vertical transom, a transom-hung rudder controlled by a tiller and a fixed fin keel. It displaces and carries of ballast. The boat has a draft of with the standard keel fitted. The fresh water tank has a capacity of . The boat is normally fitted with a small outboard motor for docking and maneuvering. The motor is mounted in the starboard lazarette and can be swung up when not in use and the hull opening covered with a hatch. The boat' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Halman Horizon
The Halman Horizon, also referred to as the Halman 27, is a Canadian sailboat that was designed by Michael Volmer as a cruiser and first built in 1982. Production The design was built by Halman Manufacturing in Beamsville, Ontario, Canada, but it is now out of production. A total of 42 examples were completed, with production commencing in 1982. The designer, Michael Volmer, was also CEO of the company. Design The Horizon is a recreational keelboat, built predominantly of fibreglass, with wood trim. The majority were built with a masthead sloop rig, although some were built with a cutter rig. It features a spooned raked stem, a very rounded and bulbous Transom (nautical), transom, a skeg-mounted rudder, with a portion protruding around the transom, controlled by a Ship's wheel, wheel and a fixed fin keel. It displaces and carries of ballast. The boat has a draft of with the standard fin keel. It was factory-fitted with a Sweden, Swedish Volvo diesel engine of . The fuel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
