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ILCA 4
The Laser 4.7 or ILCA 4 is a one-design dinghy class in the Laser series and is a one-design class of sailboat. All Lasers are built to the same specifications. The Laser is 4.06 m (13 ft 10 in) long, with a waterline length of 3.81 m (12 ft 6 in). The hull weight is 59 kg (130 lb). The boat is manufactured by ILCA and World Sailing approved builders. Lasers are cat-rigged, meaning they have only one sail. The 4.7 uses the same hull and top mast section as the Laser, but has a different, shorter bottom mast section as well as a smaller sail. The bottom mast section is pre-bent which effectively reduces the power of the rig, and the sail is only 4.7 square meters, as opposed to 7 for the Laser Standard or 5.7 for the Laser Radial. (ILCA 6) The smaller sail means that the 4.7 can be easily sailed by sailors weighing only 50–65 kg (110–145 lb), though this boat can still be sailed competitively at all levels under and over the ideal weights. Descrip ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
One-design
One-design racing is a racing method which may be adopted in sports using complex equipment, whereby all vehicles have identical or very similar designs or models, avoiding the need for a Handicapping, handicap system. Motorsport One-make racing series (also known as spec racing series) are racing series in which all competitors race with identical or very similar vehicles from the same manufacturer and suppliers. Typically, this means the same type of chassis, powertrain, tyres, brakes, and fuel are used by all drivers. The idea behind one-make car racing is that success will be based more on driver skill and Racing setup, car setup, instead of engineering skill and budget. One-make series are popular at an amateur level as they are affordable, due to the use of a common engine and chassis. Examples of one-make racing series from around the world included the Dodge Viper, Dodge Viper Challenge, Ferrari Challenge, Porsche Carrera Cup and Porsche Supercup, Supercup, Radical Europe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Laser (dinghy)
The Laser is a class of Single-handed sailing, single-handed, one-design dinghy sailing, sailing dinghies using a common hull design with three interchangeable rigs of different sail areas, appropriate to a given combination of wind strength and crew weight. Ian Bruce (sailor), Ian Bruce and Bruce Kirby (yachts), Bruce Kirby designed the Laser in 1970 with an emphasis on simplicity and performance. The Laser is a widely produced class of dinghies. As of 2018, there were more than 215,000 boats worldwide. It is an international class with sailors in 120 countries, and an Olympic class since 1996. Its wide acceptance is attributable to its robust construction, simple rig and ease of sailing that offer competitive racing due to tight class association controls which eliminate differences in hull, sails, and equipment. The International Laser Class Association (ILCA) defines the specifications and competition rules for the boat, which is officially referred to as the ILCA Dinghy, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Waterline Length
A vessel's length at the waterline (abbreviated to L.W.L) 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 is measured from a default load condition. Measurement 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 draft. Greater beam and draft ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cat-rigged
A catboat (alternate spelling: cat boat) is a sailboat with a single sail on a single mast (sailing), mast set well forward in the Bow (ship), bow of a very Glossary of nautical terms (A-L)#beam, beamy and (usually) shallow Draft (hull), draft hull. Typically they are gaff rigged, though Bermuda rig is also used. Most are fitted with a centreboard, although some have a keel. The hull can be long with a beam half as wide as the hull length at the waterline. The type is mainly found on that part of the Eastern seaboard of the USA from New Jersey to Massachusetts. Advantages of this sail plan include the economies derived from a rig with a limited number of component parts. It is quick to hoist sail and get underway. The cat rig sails well to windward, especially in calmer water. As a working boat, the forward mast placement gave ample room in the cockpit for fishing gear. Cruising versions can provide a large usable cabin space in a relatively short hull. Disadvantages of the rig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Laser Radial
The Laser Radial or ILCA 6 is a popular one-design class of small sailing dinghy, originally built by Laser Performance and World sailing approved manufactures. It is a singlehanded boat, meaning that it is sailed by one person. The Laser Radial is a variant of the Laser Standard, with shorter mast and reduced sail area, allowing light sailors to sail in heavy winds. It raced by women, U18 men and by male masters. The International Class is recognised by World Sailing. The class is referred to as the "Radial" due to the Radial technique used to create the sail with the panels stemming from the clew (far bottom corner) and reaching up the sail to the luff (the front edge). The boat is also often called the ILCA 6 due to Laser sailboats losing the rights to manufacturer it after selling them to the class association. Olympics The Laser Radial was chosen for singlehanded women discipline at the Summer Olympic starting with the 2008 Olympic Games in Qingdao, China and is still ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Byte (dinghy)
The Byte is a small one-design sailing dinghy sailed by one person. It was designed by Canadian Ian Bruce, who also commissioned and marketed the Laser. History The Byte began as an inexpensive version of the Europe dinghy that could target sailors weighing between . Design The Byte is long, wide and roughly . The hull is composed of glass reinforced polyester and foam sandwich. The Byte is designed for sailors weighing although most sailors weighing should have no problems sailing this boat on a recreational basis. The Byte sail size is only making it the ideal boat for those sailors who enjoy the independence and simplicity of a cat rigged boat, such as the Laser, but who are not strong or heavy enough to control a large sail. The rigging is similar to that of the Laser except one noticeable difference. The traveler is just below the main sheet block and not at the stern of the boat (similar to a Finn or Europe dinghy). This eradicates the chance of the main sheet gett ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Optimist Dinghy
The Optimist is a small, single-handed dinghy sailing, sailing dinghy intended for use by young people up to the age of 15. The Optimist is one of the two most popular sailing dinghies in the world, with over 150,000 boats officially registered with the class and many more built but never registered. It is sailed in over 120 countries and it is one of only two sailboats as an International Class by World Sailing exclusively for sailors under 16. Origin The Optimist was designed in 1947 either by American Clark Mills (boatbuilder and designer), Clark Mills or a Canadian sailor Gordon Reid a member of the Royal Canadian Yacht Club and the Clearwater Optimist Club at the request of the Clearwater Florida Optimist International, Optimist service club following a proposal by Major Clifford McKay to offer low-cost sailing for young people. The Optimist Club ran a soap box derby, but wanted more than a single-day event. Thus they were looking for a low-cost equivalent for sailing. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Topper (dinghy)
The Topper is an 11 foot (approx. 3.3m) sailing dinghy designed by Ian Proctor. The Topper was a one-design boat until 2023 when a new version was produced, and is sailed mostly around the British Isles. It was recognised as a World Sailing Class. The boat was previously constructed from polypropylene, and now is roto moulded, which is popular as a racing boat or for sail training. The class association (ITCA) organises racing events, which range from small travellers to major championships. The RYA run squads alongside the events; in these squads young sailors who are given specialist race coaching. It is sailed widely among junior sailors in the UK and Ireland and there is a growing fleet in China. Class history and design The Topper was designed by Ian Proctor in 1977 as a One-Design racing boat. The Topper was initially manufactured and developed by John Dunhill of J V Dunhill Boats Ltd and has been in continuous production for over four decades and over 49,000 examples ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Laser 4
A laser is a device that emits light through a process of optical amplification based on the stimulated emission of electromagnetic radiation. The word ''laser'' originated as an acronym for light amplification by stimulated emission of radiation. The first laser was built in 1960 by Theodore Maiman at Hughes Research Laboratories, based on theoretical work by Charles H. Townes and Arthur Leonard Schawlow and the optical amplifier patented by Gordon Gould. A laser differs from other sources of light in that it emits light that is coherence (physics), ''coherent''. Spatial coherence allows a laser to be focused to a tight spot, enabling uses such as optical communication, laser cutting, and Photolithography#Light sources, lithography. It also allows a laser beam to stay narrow over great distances (collimated light, collimation), used in laser pointers, lidar, and free-space optical communication. Lasers can also have high temporal coherence, which permits them to emit light ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
