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ULDB
An Ultra Light Displacement Boat (or ULDB) is a term used to refer to a modern form of sailboat watercraft with limited displacement relative to the hull size (waterline length). Principally manufactured from the mid 1970s through mid 1980s, these boats generally sit higher in the water allowing them to move faster in nearly all water types other than directly crashing into larger waves, upwind, where the momentum of the water slows the boat down due to their lighter weights. They are typically racer-cruiser and/or "trailer sailer" boats that are excellent for towing, due to their light weight. They typically have cabins, but are designed for racing, excellent low-wind characteristics, large sail plans, and to have decent weight of crew-members to control heeling of the boat under medium winds, and higher. While some have keel-stepped masts and are raced in oceans, ocean bays, or offshore, such as the Olson 30, most have deck-stepped masts and are typically more common inland and ...
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Bill Lee (yacht Designer)
Bill Lee is the designer of noted ocean racing yachts, and one of the founders of the Santa Cruz school of boatbuilding. Known to many as ''the Wizard, Lee's'' designs achieved notoriety in the 1970s, with ''Chutzpah'' and ''Merlin'' having won the Transpacific Yacht Race from Los Angeles to Honolulu many times. ''Merlin'' set and held the course record between 1977 and 1997, making the 1977 crossing in only 8 days, 11 hours and 1 minute. Life Early life Originally from Idaho, Bill's family moved to Pasadena, California when bill was eight years old. When Bill was fifteen years old, his family moved again to Orange County's Newport Beach where he first began to sail in El Toro dinghies at age 15. Newport Beach provided many opportunities for Bill to interact with yachts, from the Sea Scouts to competitive ocean yachts. Bill Lee graduated from Cal Poly at San Luis Obispo in 1965 with a degree in mechanical engineering. His first job as an engineer was in Southern California in t ...
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Ron Moore (boat Builder)
Ron Moore is largely credited, along with George Olson and Bill Lee, to have given rise to the modern ULDB, or ultralight displacement boat. This yacht type revolutionized sailing as the modern world knows it, especially in downwind races as are common on California's West Coast. The prototype for the Moore 24 ''Grendel'' was built by George Olson is his backyard in 1968. She measured 24' long and weighed just over 2000 lbs., less than half of what similar length sailboats in the marketplace displaced. The next development was ''Summertime'' which with various tweaks which became known as the Ultimate Wednesday Night Boat and proved itself repeatedly on the racecourse. The subsequent molds were taken from Summertime, and the production Moore 24 was born. Mr. Moore's famous boatyard was known as "the Reef" off of Soquel Ave. in Santa Cruz. Through a long and storied career in boatbuilding, Ron and his wife Martha ran a boatyard that embodied the California Lifestyle, comp ...
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International Offshore Rule
The International Offshore Rule (IOR) was a measurement rule for racing sailboats. The IOR evolved from the Cruising Club of America (CCA) rule for racer/cruisers and the Royal Ocean Racing Club (RORC) rule. Rule context - past and present rating systems The IOR was superseded (in the early 1990s) by the International Measurement System (IMS) and CHS (since renamed IRC). While some IOR yachts race at club level under IRC in more or less their original form, others had major surgery to make them competitive within the new rules. Rule components The IOR concentrated on hull shape with length, beam, freeboard and girth measurements, foretriangle, mast and boom measurements, and stability with an inclination test. Additionally, the IOR identified features which were dangerous, or it couldn't fairly rate, and penalized or prohibited them. The measurements and penalties were used to compute the handicap number, called an ''IOR rating'', in feet. The higher the rating, the faster th ...
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Olson 30
The Olson 30 is a sailboat designed by George Olson of Santa Cruz, CA around 1978. Olson was a surfer and surfboard shaper who decided to design a 30' ultra light displacement boat while on a delivery from Honolulu to Santa Cruz on ''Merlin'', a 68' Bill Lee designed and built ultralight sailboat which had competed in the biennial Transpac race in 1977. During this delivery, Olson came up with the idea while sailing with Denis Bassano and Don Snyder, who lent their initials to the prototype's name, ''SOB 30''. The resulting boat was christened ''Pacific High'', and it was launched in 1978. As a result of what Olson learned about the sailing characteristics of ''Pacific High'', he constructed a plug for a production boat. The draft was reduced somewhat, the freeboard was increased, and the teak decks of the prototype were replaced with fiberglass and rolled-on non-skid. Olson and partners Lyn Neale and Alan Wirtanen started Pacific Boats in an industrial area of Live Oak, CA, a ...
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Sailboat
A sailboat or sailing boat is a boat propelled partly or entirely by sails and is smaller than a sailing ship. Distinctions in what constitutes a sailing boat and ship vary by region and maritime culture. Types Although sailboat terminology has varied across history, many terms have specific meanings in the context of modern yachting. A great number of sailboat-types may be distinguished by size, hull configuration, keel type, purpose, number and configuration of masts, and sail plan. Popular monohull designs include: Cutter The cutter is similar to a sloop with a single mast and mainsail, but generally carries the mast further aft to allow for two foresails, a jib and staysail, to be attached to the head stay and inner forestay, respectively. Once a common racing configuration, today it gives versatility to cruising boats, especially in allowing a small staysail to be flown from the inner stay in high winds. Catboat A catboat has a single mast mounted far forw ...
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Merit 25
The Merit 25 is an American trailerable sailboat that was designed by Paul Yates as a Midget Ocean Racing Club (MORC) racer and first built in 1978.Sherwood, Richard M.: ''A Field Guide to Sailboats of North America, Second Edition'', pages 164-165. Houghton Mifflin Company, 1994. Henkel, Steve: ''The Sailor's Book of Small Cruising Sailboats'', page 297. International Marine/McGraw-Hill, 2010. Production The design was built by Merit Marine in the United States. The company built 780 examples of the design, starting in 1978, but it is now out of production. Design The Merit 25 is a recreational keelboat, built predominantly of fiberglass, with teak wood trim. It has a fractional sloop rig, a raked stem, a slightly reverse transom, an internally mounted spade-type 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. The fresh water tank has a capacity of . The boat is normally fitted ...
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Sportsboat
The term sportsboat first appeared in the late 1980s and early 1990s to describe trailer sailers that were optimised for high performance at the expense of accommodation and ballast. The very definition of the term "sportsboat" is evolving. There is an absence of an accepted definition of the term. They tend to be characterised by historically large sail areas for a given length (especially under downwind sails), light weight construction and a heavy reliance on crew weight to counterbalance Heeling (sailing), heeling forces. They usually feature lifting keels (for easy trailerability) of a modern fin and Bulb keel, bulb design and Planing (sailing), planing hull designs. Most sportsboats are self-righting as opposed to skiffs. As similar design philosophies spread into larger classes the length of most sportsboats has come to be considered as between 5.5m and 8m (18'-26'). Boats of a similar design but of larger size have come to be known as sports yachts and are generally in t ...
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George Olson (yacht Designer)
George may refer to: Names * George (given name) * George (surname) People * George (singer), American-Canadian singer George Nozuka, known by the mononym George * George Papagheorghe, also known as Jorge / GEØRGE * George, stage name of Giorgio Moroder * George, son of Andrew I of Hungary Places South Africa * George, South Africa, a city ** George Airport United States * George, Iowa, a city * George, Missouri, a ghost town * George, Washington, a city * George County, Mississippi * George Air Force Base, a former U.S. Air Force base located in California Computing * George (algebraic compiler) also known as 'Laning and Zierler system', an algebraic compiler by Laning and Zierler in 1952 * GEORGE (computer), early computer built by Argonne National Laboratory in 1957 * GEORGE (operating system), a range of operating systems (George 1–4) for the ICT 1900 range of computers in the 1960s * GEORGE (programming language), an autocode system invented by Charles Leonard Hambli ...
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Capri 25
The Capri 25 is an American trailerable sailboat that was designed by Frank Butler as a one design racer and first built in 1980.Sherwood, Richard M.: ''A Field Guide to Sailboats of North America, Second Edition'', pages 160-161. Houghton Mifflin Company, 1994. Henkel, Steve: ''The Sailor's Book of Small Cruising Sailboats'', page 331. International Marine/McGraw-Hill, 2010. The design is sometimes confused with the Catalina 25, an unrelated 1978 design from the same manufacturer. Production The design was built by Catalina Yachts in the United States between 1980 and 1986, but it is now out of production. Design The Capri 25 is a recreational keelboat, built predominantly of fiberglass. It has a masthead sloop rig, a spooned raked stem, a vertical transom, an internally mounted spade-type rudder controlled by a tiller and a fixed fin keel. It displaces and carries of lead ballast. The boat has a draft of with the standard keel fitted. The boat is normally fitted wit ...
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Santana 23
The Santana 23 is a lightweight, 23-foot 4-inch sailboat that was designed by W. Shad Turner and manufactured by W. D. Schock Corp as a "high performance Sailing (sport), racer" and Trailer sailer, trailerable Cruising (maritime), cruiser. It was first built in 1978 and remained in production through 1987, with a total of 194 units produced,Henkel, Steve: ''The Sailor's Book of Small Cruising Sailboats'', page 248. International Marine/McGraw-Hill, 2010. though the hull was brought back in 1993 as the Santana 2023. It was produced through 1984 as the Santana 23 "D" (for "daggerboard") model, commonly called the Santana 23D, with a retractable, vertical, daggerboard, daggerboard keel similar to Dinghy_sailing, racing dinghys, with a remaining 50 produced through 1987 with a traditional keel, called the Santana 23K. The hull was also used to inspire the Wavelength 24 also by Schrock, and supposedly "many other models." Design The 23 was initially designed as a recreational dagger ...
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Wavelength 24
The Wavelength 24 is an American trailerable sailboat that was designed by Paul Lindenberg as a Midget Ocean Racing Club (MORC) racer and first built in 1982.Henkel, Steve: ''The Sailor's Book of Small Cruising Sailboats'', page 249. International Marine/McGraw-Hill, 2010. Production The design was built by W. D. Schock Corp in the United States, with initial production running from 1982 to 1990, with 87 boats delivered. Production was restarted in 2005, but by 2021 it was out of production once again. Design The Wavelength 24 is a recreational keelboat, built predominantly of fiberglass, with wood trim. It has a masthead sloop rig, a raked stem, a walk-through reverse transom, an internally mounted spade-type rudder controlled by a tiller and a fixed fin keel. It displaces and carries of lead ballast. The reintroduced 2005 version incorporated some design changes including an optional wing keel, as well as hammock style bunks with storage underneath. The boat has a dr ...
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Watercraft
A watercraft or waterborne vessel is any vehicle designed for travel across or through water bodies, such as a boat, ship, hovercraft, submersible or submarine. Types Historically, watercraft have been divided into two main categories. *Rafts, which gain their buoyancy from the fastening together of components that are each buoyant in their own right. Generally, a raft is a "flow through" structure, whose users would have difficulty keeping dry as it passes through waves. Consequently, apart from short journeys (such as a river crossing), their use is confined to warmer regions (roughly 40° N to 40° S). Outside this area, use of rafts at sea is impracticable due to the risks of exposure to the crew. *Boats and ships, which float by having the submergeable part of their structure exclude water with a waterproof surface, so creating a space that contains air, as well as cargo, passengers, crew, etc. In total, this structure weighs less than the water that would occupy the sa ...
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