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Ultra Light Displacement Boat
An ultra light displacement boat (or ULDB) is a modern form of watercraft with limited displacement relative to the hull size (waterline length). ULDBs are competitive, even after 35 years with open ocean racing participation and podium finishes even today. The relative low cost to obtain, tough construction and readily easy modifications make an Olson or a Hobie an extremely competitive and fun boat. The boats do lack comfort, and are not designed for cruising; however, with multiple transpac races, and multiple Bermuda 1-2 entries, they are proving to be a stalwart competitor despite their older design. See also *Bill Lee (yacht designer) *George Olson (yacht designer) *Olson 30 *Hobie 33 *International Offshore Rule *Ron Moore (boat builder) *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 "sportsb ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Watercraft
Any vehicle used in or on water as well as underwater, including boats, ships, hovercraft and submarines, is a watercraft, also known as a water vessel or waterborne vessel. A watercraft usually has a propulsive capability (whether by sail, oar, paddle, or engine) and hence is distinct from a stationary device, such as a pontoon, that merely floats. Types Most watercraft may be described as either a ship or a boat. However, numerous items, including surfboards, underwater robots, seaplanes and torpedoes, may be considered neither ships nor boats. Although ships are typically larger than boats, the distinction between those two categories is not one of size per se. *Ships are typically large ocean-going vessels; whereas boats are smaller, and typically travel most often on inland or coastal waters. *A rule of thumb says "a boat can fit on a ship, but a ship can't fit on a boat", and a ship ''usually'' has sufficient size to carry its own boats, such as lifeboats, dingh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Displacement (ship)
The displacement or displacement tonnage of a ship is its weight. As the term indicates, it is measured indirectly, using Archimedes' principle, by first calculating the volume of water displaced by the ship, then converting that value into weight. Traditionally, various measurement rules have been in use, giving various measures in long tons. Today, tonnes are more commonly used. Ship displacement varies by a vessel's degree of load, from its empty weight as designed (known as "lightweight tonnage") to its maximum load. Numerous specific terms are used to describe varying levels of load and trim, detailed below. Ship displacement should not be confused with measurements of volume or capacity typically used for commercial vessels and measured by tonnage: net tonnage and gross tonnage. Calculation The process of determining a vessel's displacement begins with measuring its draft.George, 2005. p.5. This is accomplished by means of its "draft marks" (or "load lines"). A mer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hull (watercraft)
A hull is the watertight body of a ship, boat, or flying boat. The hull may open at the top (such as a dinghy), or it may be fully or partially covered with a deck. Atop the deck may be a deckhouse and other superstructures, such as a funnel, derrick, or mast. The line where the hull meets the water surface is called the waterline. General features There is a wide variety of hull types that are chosen for suitability for different usages, the hull shape being dependent upon the needs of the design. Shapes range from a nearly perfect box in the case of scow barges to a needle-sharp surface of revolution in the case of a racing multihull sailboat. The shape is chosen to strike a balance between cost, hydrostatic considerations (accommodation, load carrying, and stability), hydrodynamics (speed, power requirements, and motion and behavior in a seaway) and special considerations for the ship's role, such as the rounded bow of an icebreaker or the flat bottom of a landing craft. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Waterline Length
A vessel's length at the waterline (abbreviated to L.W.L)Note: originally Load Waterline Length is the length of a ship or boat at the level where it sits in the water (the ''waterline''). The LWL will be shorter than the length of the boat overall (''length overall'' or LOA) as most boats have bows and stern protrusions that make the LOA greater than the LWL. As a ship becomes more loaded, it will sit lower in the water and its ambient waterline length may change; but the registered L.W.L it is measured from a default load condition. This measure is significant in determining several of a vessel's properties, such as how much water it displaces, where the bow and stern waves occur, hull speed, amount of bottom-paint needed, etc. Traditionally, a stripe called the "boot top" is painted around the hull just above the waterline. In sailing boats, longer waterline length will usually enable a greater maximum speed, because it allows greater sail area, without increasing beam or d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Proa
Proas are various types of multi-hull outrigger sailboats of the Austronesian peoples. The terms were used for native Austronesian ships in European records during the Colonial era indiscriminately, and thus can confusingly refer to the double-ended single-outrigger boats of Oceania, the double-outrigger boats of Island Southeast Asia, and sometimes ships with no outriggers or sails at all. In its most common usage, the term ''proa'' refers to the Pacific proas which consist of two (usually) unequal-length parallel hulls. It is sailed so that one hull is kept to windward, and the other to leeward. It is double-ended, since it needs to " shunt" to reverse direction when tacking. It is most famously used for the ''sakman'' ships of the Chamorro people of the Northern Marianas, which were known as the "flying proas" for their remarkable speed. In Island Southeast Asia, the term ''proa'' may also sometimes be used, but the terms perahu, prau, prahu, paraw and prow are more ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
George Olson (yacht Designer)
George may refer to: People * George (given name) * George (surname) * George (singer), American-Canadian singer George Nozuka, known by the mononym George * George Washington, First President of the United States * George W. Bush, 43rd President of the United States * George H. W. Bush, 41st President of the United States * George V, King of Great Britain, Ireland, the British Dominions and Emperor of India from 1910-1936 * George VI, King of Great Britain, Ireland, the British Dominions and Emperor of India from 1936-1952 * Prince George of Wales * George Papagheorghe also known as Jorge / GEØRGE * George, stage name of Giorgio Moroder * George Harrison, an English musician and singer-songwriter Places South Africa * George, Western Cape ** George Airport United States * George, Iowa * George, Missouri * George, Washington * George County, Mississippi * George Air Force Base, a former U.S. Air Force base located in California Characters * George (Peppa Pig), a 2-year-old ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hobie 33
The Hobie 33 is an American trailerable sailboat that was designed by Hobie Alter and Phil Edwards as one-design racer and first built in 1982. It was the first monohull design for Alter and his company, after establishing their reputations for their lines of surfboards and catamaransSherwood, Richard M.: ''A Field Guide to Sailboats of North America, Second Edition'', pages 256-257. Houghton Mifflin Company, 1994. Production The design was built by Hobie Cat in the United States from 1982 until 1987, with 187 examples completed, but it is now out of production. Design The Hobie 33 is a recreational keelboat, built predominantly of a polyester and fiberglass sandwich, with wood trim. Very light for its size with a displacement of , it has a 7/8 fractional sloop rig with aluminum spars, a raked stem, a reverse transom, an internally mounted spade-type rudder controlled by a tiller and a fixed fin keel or lifting keel with a bulb weight. It displaces and carries of le ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 the b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 forces. They usually feature lifting keels (for easy trailerability) of a modern fin and bulb design and 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 the size range of 9m - 12m. Their noncomformity ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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