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CS 36 Merlin
The CS 36 Merlin is a Canadian sailboat, that was designed by Tony Castro and first built in 1986. The design is out of production. Production The boat was built by CS Yachts in Canada, who completed 100 examples between 1986 and 1990. The CS 36 Merlin was produced for almost a year side-by-side with the CS 36, which then became known as the ''CS 36 Traditional''. After the production overlap the Merlin replaced the CS 36 in company's line. About 20 of the 100 Merlins built were supplied to charter operators for their fleets. Design The CS 36 Merlin is a small recreational keelboat, built predominantly of vacuum bag moulded fibreglass or Kevlar with a balsa wood core above the waterline. It has a masthead sloop rig, 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 wing keel. The boat is fitted with a Swedish Volvo Penta diesel engine of as standard ...
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Tony Castro
Tony Castro (full name Antonio Maria de Lancastre de Mello e Castro), Conde das Antas, Conde da Lousa, Visconde de Pernes, born 1952, is a yacht designer, known for numerous winning designs. Born in Lisbon, Portugal, he has been designing sailing and motor yachts since about 1980, with more than 10,000 boats launched, ranging from custom boats and one-design production models to superyachts. His design firm is based in Hamble-le-Rice, England. Career As a Chartered Engineer, his first job came about when it was discovered that Denis Doyle's yacht ''Moonduster'' was floating above her 'marks', having been built less heavily than had been intended her designer, Germán Frers. Castro advised that lead be attached to the underside of the coachroof and had a hole drilled in the keel to reduce her stability, which gave the vessel an exceptionally good handicap for a boat of her size. ''Moonduster'' held the Round Ireland monohull record from Wicklow to Wicklow for nearly 15 years until ...
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Kevlar
Kevlar (para-aramid) is a strong, heat-resistant synthetic fiber, related to other aramids such as Nomex and Technora. Developed by Stephanie Kwolek at DuPont in 1965, the high-strength material was first used commercially in the early 1970s as a replacement for steel in racing tires. It is typically spun into ropes or fabric sheets that can be used as such, or as an ingredient in composite material components. Kevlar has many applications, ranging from bicycle tires and racing sails to bulletproof vests, all due to its high tensile strength-to-weight ratio; by this measure it is five times stronger than steel. It is also used to make modern marching drumheads that withstand high impact; and for mooring lines and other underwater applications. A similar fiber called Twaron with the same chemical structure was developed by Akzo in the 1970s; commercial production started in 1986, and Twaron is now manufactured by Teijin. History Poly-paraphenylene terephthalamide (K2 ...
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Sailing Yachts
A sailing yacht (US ship prefixes SY or S/Y), is a leisure craft that uses sails as its primary means of propulsion. A yacht may be a sail or power vessel used for pleasure, cruising, or racing. There is no standard definition, so the term applies here to sailing vessels that have a cabin with amenities that accommodate overnight use. To be termed a "yacht", as opposed to a "boat", such a vessel is likely to be at least in length and have been judged to have good aesthetic qualities. Sailboat, Sailboats that do not accommodate overnight use or are smaller than are not universally called yachts. Sailing yachts in excess of are generally considered to be Superyacht, superyachts. Sailing yachts are actively used in sport and are among categories recognized by the governing body of sailing sports, World Sailing. Etymology The term ''yacht'' originates from the Dutch language, Dutch word ''jacht'' (pl. ''jachten'', which means "hunt"), and originally referred to light, fast saili ...
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1980s Sailboat Type Designs
__NOTOC__ Year 198 (CXCVIII) was a common year starting on Sunday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Sergius and Gallus (or, less frequently, year 951 ''Ab urbe condita''). The denomination 198 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years. Events By place Roman Empire *January 28 **Publius Septimius Geta, son of Septimius Severus, receives the title of Caesar. **Caracalla, son of Septimius Severus Lucius Septimius Severus (; 11 April 145 – 4 February 211) was Roman emperor from 193 to 211. He was born in Leptis Magna (present-day Al-Khums, Libya) in the Roman province of Africa (Roman province), Africa. As a young man he advanced thro ..., is given the title of Augustus (title), Augustus. China *Winter – Battle of Xiapi: The allied armies led by Cao Cao and Liu Bei ...
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Keelboats
A keelboat is a riverine cargo-capable working boat, or a small- to mid-sized recreational sailing yacht. The boats in the first category have shallow structural keels, and are nearly flat-bottomed and often used leeboards if forced in open water, while modern recreational keelboats have prominent fixed fin keels, and considerable draft. The two terms may draw from cognate words with different final meaning. A keep boat, keelboat, or keel-boat is a type of usually long, narrow cigar-shaped riverboat, or unsheltered water barge which is sometimes also called a poleboat—that is built about a slight keel and is designed as a boat built for the navigation of rivers, shallow lakes, and sometimes canals that were commonly used in America including use in great numbers by settlers making their way west in the century-plus of wide-open western American frontiers. They were also used extensively for transporting cargo to market, and for exploration and trading expeditions, for wa ...
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List Of Sailing Boat Types
The following is a partial list of sailboat types and sailing classes, including keelboats, dinghies and multihull ( catamarans and trimarans). Olympic classes World Sailing Classes Historically known as the IYRU (International Yacht Racing Union), the organization evolved into the ISAF (International Sailing Federation) in 1996, and as of December 2015 is now World Sailing. Dinghies Keelboats & yachts Multihulls Boards Radio-controlled Former World Sailing-classes Dinghies Keelboats & yachts Multihulls Boards Other classes and sailboat types Dinghies Keelboats & yachts Multihulls See also * Classic dinghy classes * List of boat types * List of historical ship types * List of keelboat classes designed before 1970 * Olympic sailing classes * Small-craft sailing * Clansman 30 Notes References {{DEFAULTSORT:Sailing boat types Types * Boat types A boat is a watercraft of a large range of types and sizes, but general ...
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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. Thi ...
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Performance Handicap Racing Fleet
Performance Handicap Racing Fleet (PHRF) is a handicapping system used for yacht racing in North America. It allows dissimilar classes of sailboats to be raced against each other. The aim is to cancel out the inherent advantages and disadvantages of each class of boats, so that results reflect crew skill rather than equipment superiority. PHRF is used mainly for larger sailboats (i.e., 7 meters and above). For dinghy racing, the Portsmouth yardstick handicapping system is more likely to be used. The handicap number assigned to a class of yachts is based on the yacht's speed relative to a theoretical yacht with a rating of 0. A yacht's handicap, or rating, is the number of seconds per mile traveled that the yacht in question should be behind the theoretical yacht. Most boats have a positive PHRF rating, but some very fast boats have a negative PHRF rating. If Boat A has a PHRF rating of 15 and Boat B has a rating of 30 and they compete on a 1 mile course, Boat A should finish a ...
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Turbocharged
In an internal combustion engine, a turbocharger (often called a turbo) is a forced induction device that is powered by the flow of exhaust gases. It uses this energy to compress the intake gas, forcing more air into the engine in order to produce more power for a given engine displacement, displacement.
The current categorisation is that a turbocharger is powered by the kinetic energy of the exhaust gasses, whereas a supercharger is mechanically powered (usually by a belt from the engine's crankshaft). However, up until the mid-20th century, a turbocharger was called a "turbosupercharger" and was considered a type of supercharger.


History

Prior to the invention of the turbocharger, forced induction was only possible using mechanically-powered superchargers. Use of superchargers began in 1878, when sev ...
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Transom (nautical)
A transom is the vertical reinforcement which strengthens the stern of a boat. This flat termination of the stern is typically above the waterline. The term was used as far back as Middle English in the 1300s, having come from Latin ''transversus'' (transverse) via Old French ''traversain'' (set crosswise). The stern of a boat is typically vertical. It can be raked such that there is an overhang above the water, as at the bow. A reverse transom is angled from the waterline forwards. Transoms can be used to support a rudder, outboard motor, or as a swimming and access platform. Gallery File:The Bermuda cedar (Juniperus bermudiana) transom of Spirit of Bermuda, 2016.jpg, The Bermuda cedar transom of the Spirit of Bermuda File:Sea Scooter transom.jpg, Flat transom on a dinghy with mount points for a rudder. File:Coble on shore at Boulmer (2) - geograph.org.uk - 1381157.jpg, Raked transom with rudder mount points. File:CS 30 Sailboat Kelsea 0297.jpg, Reverse transom with rudder m ...
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Wing Keel
The winged keel is a sailboat keel layout first fitted on the 12-metre class yacht ''Australia II'', 1983 America's Cup winner. Design This layout was adopted by Ben Lexcen, designer of ''Australia II''. Although Ben Lexcen "had tried the winged keel idea before",Bruce Stannard, ''Ben lexcen, the man, the keel and the cup'', Faber and Faber, 1984, there is conjecture that it was computed and designed by a Dutch aerodynamicist at the Wageningen towing tank (Netherlands Ship Model Bassin). Wings The lateral wings of Australia II are of moderate aspect ratio, forming a nearly horizontal foil, the "wing", at the bottom to provide additional effective span, in the same way as the winglets on an aircraft. Each wing acts as a winglet, effectively increasing the keel aspect ratio therefore reducing the lift-induced drag. Because the yacht is heeled over when sailing upwind, the leeward foil attains more draft, which reduces the loss of efficiency that always occurs under heel. The win ...
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Keel
The keel is the bottom-most longitudinal structural element on a vessel. On some sailboats, it may have a hydrodynamic and counterbalancing purpose, as well. As the laying down of the keel is the initial step in the construction of a ship, in British and American shipbuilding traditions the construction is dated from this event. Etymology The word "keel" comes from Old English , Old Norse , = "ship" or "keel". It has the distinction of being regarded by some scholars as the first word in the English language recorded in writing, having been recorded by Gildas in his 6th century Latin work ''De Excidio et Conquestu Britanniae'', under the spelling ''cyulae'' (he was referring to the three ships that the Saxons first arrived in). is the Latin word for "keel" and is the origin of the term careen (to clean a keel and the hull in general, often by rolling the ship on its side). An example of this use is Careening Cove, a suburb of Sydney, Australia, where careening was carried out ...
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