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Laser 4.7
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 bottom mast section as well as a smaller sail. The bottom mast section is already 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. 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 under and over the ideal weights.http://www.laser.org/ Description ... [...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. 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, due to a trademark dispute. Other ... [...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] |
Cat-rigged
A catboat (alternate spelling: cat boat) is a sailboat with a single sail on a single mast set well forward in the bow of a very beamy and (usually) shallow 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 12 to 40 feet 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 include the limited deck space around the mast, which can be prob ... [...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. 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. The International Class is recognised by World Sailing. Events Olympics The Laser Radial was chosen for singlehanded women discipline at the Summer Olympic starting with the 2008 summer games regatta in Qingdao, China. World championships Men's Laser Radial World Championship Women's Laser Radial World Championship Men's Youth Laser Radial World Championship Men's Youth Under 21 Laser Radial World Championship Men's Youth Under 17 Laser Radial World Championship Youth Sailing World Championships =Boys= =Girls= Women's Youth Laser Radial World Championship Women's Youth (Under 21) Laser Radial World Championship Women's Youth (Un ... [...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 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 by American Clark Mills at the request of the Clearwater Florida 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. He designed a simple pram that could be built from two 4' x 8' sheets of plywood, and donated the plan to the Optimists. The design was slightly modified and introduced to Europe by Axel Damg ... [...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" is an acronym for "light amplification by stimulated emission of radiation". The first laser was built in 1960 by Theodore H. Maiman at Hughes Research Laboratories, based on theoretical work by Charles Hard Townes and Arthur Leonard Schawlow. A laser differs from other sources of light in that it emits light which is ''coherent''. Spatial coherence allows a laser to be focused to a tight spot, enabling applications such as laser cutting and lithography. Spatial coherence also allows a laser beam to stay narrow over great distances (collimation), enabling applications such as laser pointers and lidar (light detection and ranging). Lasers can also have high temporal coherence, which allows them to emit light with a very narrow spectrum. Alternatively, temporal coherence can be used to produce ultrashort pulses of light wit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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