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Cal 40
The Cal 40 is an American sailboat that was designed by Bill Lapworth as an offshore racer and first built in 1963. The boat became an acclaimed racer and was also a commercial success. ''Sailboatdata'' terms it, "one of the most influential designs and successful racing boats ever". Production The design was commissioned by George Griffith, a successful racing sailor, who was a member of Los Angeles Yacht Club. It is said that Griffith sketched the design on the back of a napkin and showed it to Bill Lapworth who designed the boat. The design was offered to a number of builders, who declined to build it. Griffith agreed to back the building of the first ten boats constructed, which convinced Jack Jensen to start production. The design was built by Jensen Marine in the United States, from 1963 until 1971, with 108 boats completed, but it is now out of production. Design The Cal 40 is a racing keelboat, built predominantly of fiberglass, with wood trim. It has a masthead ...
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Bill Lapworth
Charles William Lapworth (12 December 1919 – 3 April 2006) was an 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 surveyor work. ...
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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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1960s Sailboat Type Designs
Year 196 ( CXCVI) was a leap year starting on Thursday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Dexter and Messalla (or, less frequently, year 949 ''Ab urbe condita''). The denomination 196 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 * Emperor Septimius Severus attempts to assassinate Clodius Albinus but fails, causing Albinus to retaliate militarily. * Emperor Septimius Severus captures and sacks Byzantium; the city is rebuilt and regains its previous prosperity. * In order to assure the support of the Roman legion in Germany on his march to Rome, Clodius Albinus is declared Augustus by his army while crossing Gaul. * Hadrian's wall in Britain is partially destroyed. China * First year of the '' Jian'an era of the Chinese Han Dynasty. * Emperor Xian of ...
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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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Transpacific Yacht Race
The Transpacific Yacht Race (Transpac) is a biennial offshore yacht race held in odd-numbered years starting off the Pt. Fermin buoy in San Pedro, California and ending off Diamond Head in Hawaii, a distance of around . In even-numbered years the Pacific Cup race starts out of San Francisco and is run by the Pacific Cup Yacht Club. Started in 1906 by Clarence W. Macfarlane and hosted by Los Angeles Yacht Club, it is one of yachting's premier offshore races and attracts entrants from all over the world. The race is organized by the Transpacific Yacht Club. The race is famous for fast downwind sailing under spinnaker in the trade winds. Notable records *Fully Crewed Multihull Elapsed time: ''Mighty Merloe'' (ORMA 60 trimaran), 2017 of 4 days, 6 hours, 32 minutes, 30 seconds. *Fully Crewed Monohull Elapsed time: ''Comanche'', 2017 of 5 days, 1 hours, 55 minutes, 26 seconds. *Double Handed: ''Pegasus 50'', 2009, sailed by Philippe Kahn and Mark Christensen, set a new record of 7 ...
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Newport Bermuda Race
The Newport Bermuda Race, commonly known as the ''Bermuda Race'', is a biennial, 635 nautical miles (1175 km) sailing yacht race from Newport, Rhode Island to the British island of Bermuda. According to its website, the Race is the oldest regularly scheduled ocean race, and one of two regularly scheduled races "held almost entirely out of sight of land." Indian Harbor Yacht Club has recorded more entries in the Newport Bermuda Race than any other yacht club in the world. In a typical race, the fleet enters the Atlantic and the Gulf Stream, with rough water, giving the race its nickname, "The Thrash to the Onion Patch." Once through the rough Gulf Stream, the sailors press on to the finish off St. David's Lighthouse, then winding channel to Hamilton, Bermuda to the Royal Bermuda Yacht Club. Along with Sydney to Hobart Yacht Race and the Fastnet Race, it is considered one of the classic big offshore races with each distance approximately . To quote Gary Jobson, "It’s a ...
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Southern Ocean Racing Conference
Southern may refer to: Businesses * China Southern Airlines, airline based in Guangzhou, China * Southern Airways, defunct US airline * Southern Air, air cargo transportation company based in Norwalk, Connecticut, US * Southern Airways Express, Memphis-based passenger air transportation company, serving eight cities in the US * Southern Company, US electricity corporation * Southern Music (now Peermusic), US record label * Southern Railway (other), various railways * Southern Records, independent British record label * Southern Studios, recording studio in London, England * Southern Television, defunct UK television company * Southern (Govia Thameslink Railway), brand used for some train services in Southern England Media * ''Southern Daily'' or ''Nanfang Daily'', the official Communist Party newspaper based in Guangdong, China * ''Southern Weekly'', a newspaper in Guangzhou, China * Heart Sussex, a radio station in Sussex, England, previously known as "Southern FM" * 88. ...
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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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Spinnaker
A spinnaker is a sail designed specifically for sailing off the wind on courses between a reach (wind at 90° to the course) to downwind (course in the same direction as the wind). Spinnakers are constructed of lightweight fabric, usually nylon, and are often brightly colored. They may be designed to perform best as either a reaching or a running spinnaker, by the shaping of the panels and seams. They are attached at only three points and said to be ''flown''. Nomenclature Informal names for a spinnaker are ''kite'' or ''chute'' (owing to their resemblance to a parachute in both construction and appearance). Boats may have more than one spinnaker, differentiated by a letter to indicate symmetric (S) or asymmetric (A) and a number to indicate size (with higher numbers indicating smaller size), e.g. ''A1'' would be a large asymmetric sail and ''S3'' would be a smaller symmetric sail. Operation A spinnaker is used for sailing with the direction of the wind. Symmetrical ...
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Head (watercraft)
The head (pl. heads) is a ship's toilet. The name derives from sailing ships in which the toilet area for the regular sailors was placed at the head or bow of the ship. Design In sailing ships, the toilet was placed in the bow somewhat above the water line with vents or slots cut near the floor level allowing normal wave action to wash out the facility. Only the captain had a private toilet near his quarters, at the stern of the ship in the quarter gallery. The plans of 18th-century naval ships do not reveal the construction of toilet facilities when the ships were first built. The Journal of Aaron Thomas aboard HMS ''Lapwing'' in the Caribbean Sea in the 1790s records that a canvas tube was attached, presumably by the ship's sailmaker, to a superstructure beside the bowsprit near the figurehead, ending just above the normal waterline. In many modern boats, the heads look similar to seated flush toilets but use a system of valves and pumps that brings sea water into the to ...
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Companionway
In the architecture of a ship, a companion or companionway is a raised and windowed hatchway in the ship's deck, with a ladder leading below and the hooded entrance-hatch to the main cabins. A companionway may be secured by doors or, commonly in sailboats, ''hatch boards'' which fit in grooves in the companionway frame. This allows the lowest board to be left in place during inclement weather to minimize water infiltration. The term may be more broadly used to describe any ladder between decks. File:Hatchboards.JPG, Set of hatch boards in companionway hatch. File:Hatchboards2.JPG, Set of hatch boards with top board removed. See also Glossary of nautical terms This glossary of nautical terms is an alphabetical listing of terms and expressions connected with ships, shipping, seamanship and navigation on water (mostly though not necessarily on the sea). Some remain current, while many date from the 17th t ... References {{sailing ship elements Rooms Water transport Nauti ...
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