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Naples Sabot
The Naples Sabot is an sailing dinghy. The Naples Sabot was designed by Roy McCullough and R.A. Violette and the first two were built in Violette's garage during WW II, although official designs were not made available until 1946. The Naples Sabot is based on the Balboa Dinghy and on Charles MacGregor's Sabot as published in Rudder magazine, April 1939. It takes its name from Naples in Long Beach, California, where it was developed. Design The Naples Sabot differs from the MacGregor in its use of a leeboard instead of a daggerboard or centerboard. The leeboard gives the boat additional versatility, making it easy to use as a rowboat and thus permitting it to be used as a tender or for fishing. Along with the leeboard the boat gained a small fixed keel, which assists when rowing or towing the dinghy. Traditionally the hull of the Naples Sabot was built from plywood Plywood is a material manufactured from thin layers or "plies" of wood veneer that are glued together wit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Monohull
right A monohull is a type of boat having only one hull, unlike multihulled boats which can have two or more individual hulls connected to one another. Fundamental concept Among the earliest hulls were simple logs, but these were generally unstable and tended to roll over easily. Hollowing out the logs into a dugout canoe doesn't help much unless the hollow section penetrates below the log's center of buoyancy, then a load carried low in the cavity actually stabilizes the craft. Adding weight or ballast to the bottom of the hull or as low as possible within the hull adds stability. Naval architects place the center of gravity substantially below the center of buoyancy; in most cases this can only be achieved by adding weight or ballast. The use of stones and other weights as ballast can be traced back to the Romans, Phoenicians and Vikings. Modern ships carry tons of ballast in order to maintain their stability; even heavily laden cargo ships use ballast to optimize the distr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Holdfast Trainer
The Holdfast Trainer is a South Australian sailing dinghy designed in 1948 for junior sailors under the required age of 16. Based on the Sabot, the class features a hard-chine wooden or fiberglass hull with a flat (or "pram") bow and a daggerboard. Unlike the Sabot, the Holdfast Trainer has both a main and a jib in order to facilitate a two-person crew and to teach jib handling. To make space for the jib, the mast was stepped further back and a bowsprit was added. Modern versions include waterproof bulkheads to provide additional flotation. The boat has been sailed for many years by 8 to 15 year olds at South Australian sailing clubs, with the first state championships being held in 1958 and still continuing on today. One of those clubs, the Port Lincoln Yacht Club, has continuously sailed the dinghy for over 50 years, and held their 50th Anniversary celebrations for the class in 2010 at the recent states and metropolitan championships. South Australian Premier Steven Marshall ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
El Toro (dinghy)
The El Toro is an American pram sailboat that was designed by Charles McGregor as a sail training dinghy and yacht tender, first built in 1939. It is now often sailed as a singlehanded one-design racer. The boat is a development of McGregor's Sabot design, the plans for which were published in ''The Rudder'' magazine in 1939. The design has been widely adapted and other derivations include the Naples Sabot, US Sabot, Wind'ard Sabot and the Australian Holdfast Trainer. Production The design was built by Moore Sailboats and W. D. Schock Corp in the United States, but it is now out of production. More than 11.000 boats were produced. Design The El Toro is a recreational sailing dinghy, with the early versions build of plywood and later ones of fiberglass, with wood trim. Spars may be made from wood, aluminum or carbon fiber. It has a cat rig, a squared stem, a nearly plumb transom, a transom-hung rudder controlled by a tiller and a retractable daggerboard. Ready ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carbon Fiber
Carbon fiber-reinforced polymers (American English), carbon-fibre-reinforced polymers (Commonwealth English), carbon-fiber-reinforced plastics, carbon-fiber reinforced-thermoplastic (CFRP, CRP, CFRTP), also known as carbon fiber, carbon composite, or just carbon, are extremely strong and light fiber-reinforced plastics that contain carbon fibers. CFRPs can be expensive to produce, but are commonly used wherever high strength-to-weight ratio and stiffness (rigidity) are required, such as aerospace, superstructures of ships, automotive, civil engineering, sports equipment, and an increasing number of consumer and technical applications. The binding polymer is often a thermoset resin such as epoxy, but other thermoset or thermoplastic polymers, such as polyester, vinyl ester, or nylon, are sometimes used. The properties of the final CFRP product can be affected by the type of additives introduced to the binding matrix (resin). The most common additive is silica, but other ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aluminum
Aluminium (aluminum in American and Canadian English) is a chemical element with the symbol Al and atomic number 13. Aluminium has a density lower than those of other common metals, at approximately one third that of steel. It has a great affinity towards oxygen, and forms a protective layer of oxide on the surface when exposed to air. Aluminium visually resembles silver, both in its color and in its great ability to reflect light. It is soft, non-magnetic and ductile. It has one stable isotope, 27Al; this isotope is very common, making aluminium the twelfth most common element in the Universe. The radioactivity of 26Al is used in radiodating. Chemically, aluminium is a post-transition metal in the boron group; as is common for the group, aluminium forms compounds primarily in the +3 oxidation state. The aluminium cation Al3+ is small and highly charged; as such, it is polarizing, and bonds aluminium forms tend towards covalency. The strong affinity tow ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nylon
Nylon is a generic designation for a family of synthetic polymers composed of polyamides ( repeating units linked by amide links).The polyamides may be aliphatic or semi-aromatic. Nylon is a silk-like thermoplastic, generally made from petroleum, that can be melt-processed into fibers, films, or shapes. Nylon polymers can be mixed with a wide variety of additives to achieve many property variations. Nylon polymers have found significant commercial applications in fabric and fibers (apparel, flooring and rubber reinforcement), in shapes (molded parts for cars, electrical equipment, etc.), and in films (mostly for food packaging). History DuPont and the invention of nylon Researchers at DuPont began developing cellulose based fibers, culminating in the synthetic fiber rayon. DuPont's experience with rayon was an important precursor to its development and marketing of nylon. DuPont's invention of nylon spanned an eleven-year period, ranging from the initial researc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dacron
Polyethylene terephthalate (or poly(ethylene terephthalate), PET, PETE, or the obsolete PETP or PET-P), is the most common thermoplastic polymer resin of the polyester family and is used in fibres for clothing, containers for liquids and foods, and thermoforming for manufacturing, and in combination with glass fibre for engineering resins. In 2016, annual production of PET was 56 million tons. The biggest application is in fibres (in excess of 60%), with bottle production accounting for about 30% of global demand. In the context of textile applications, PET is referred to by its common name, polyester, whereas the acronym ''PET'' is generally used in relation to packaging. Polyester makes up about 18% of world polymer production and is the fourth-most-produced polymer after polyethylene (PE), polypropylene (PP) and polyvinyl chloride (PVC). PET consists of repeating (C10H8O4) units. PET is commonly recycled, and has the digit 1 (♳) as its resin identification code (RIC). ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mainsail
A mainsail is a sail rigged on the main mast of a sailing vessel. * On a square rigged vessel, it is the lowest and largest sail on the main mast. * On a fore-and-aft rigged vessel, it is the sail rigged aft of the main mast. The sail's foot is normally attached to a boom. (In extremely heavy weather, the mainsail may be lowered, and a much smaller trysail hoisted in its place). Historical fore-and-aft rigs used a four-sided gaff rigged mainsail, sometimes setting a gaff topsail above it. Whereas once the mainsail was typically the largest sail, today the mainsail may be smaller than the jib or genoa; Prout catamarans typically have a mainmast stepped further aft than in a standard sloop, so that the mainsail is much smaller than the foresail. Bermuda rig The modern Bermuda rig uses a triangular mainsail aft of the mast, closely coordinated with a jib for sailing upwind. A large overlapping jib or genoa Genoa ( ; it, Genova ; lij, Zêna ). is the capital of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cat Rigged
A boat or yacht that is Cat-rigged has a single mast, stepped well forward, carrying a single fore and aft sail, behind the mast. A boat that is cat-rigged can also be described as having a Una rig. Laser dinghies are cat-rigged, as are Finn dinghies, Optimists, many Freedom Yachts and many traditional fishing vessels. Also cat-rigged are catboats,Encyclopædia Britannica, 1959, Volume 5, p. 24 a traditional style of wide-beamed, shallow-draft boat, typically gaff-rigged with a centreboard. Formerly common on the East Coast of the United States they are more commonly seen as dinghy-sized open daysailers and class racers. The terms cat-rigged, and catboat, should not be confused with catamarans. Catamarans are not related to the term cat-rigged, though catamarans can be cat-rigged, if they have a single sail and no jib. The term 'cat' may come from the 'cat head', a protruding cross beam, not far behind the bow, or head, of a sailing ship, to which the anchor was attached wh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fiberglass
Fiberglass (American English) or fibreglass (Commonwealth English) is a common type of fiber-reinforced plastic using glass fiber. The fibers may be randomly arranged, flattened into a sheet called a chopped strand mat, or woven into glass cloth. The plastic matrix may be a thermoset polymer matrix—most often based on thermosetting polymers such as epoxy, polyester resin, or vinyl ester resin—or a thermoplastic. Cheaper and more flexible than carbon fiber, it is stronger than many metals by weight, non- magnetic, non- conductive, transparent to electromagnetic radiation, can be molded into complex shapes, and is chemically inert under many circumstances. Applications include aircraft, boats, automobiles, bath tubs and enclosures, swimming pools, hot tubs, septic tanks, water tanks, roofing, pipes, cladding, orthopedic casts, surfboards, and external door skins. Other common names for fiberglass are glass-reinforced plastic (GRP), glass-fiber reinforced plastic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plywood
Plywood is a material manufactured from thin layers or "plies" of wood veneer that are glued together with adjacent layers having their wood grain rotated up to 90 degrees to one another. It is an engineered wood from the family of manufactured boards which include medium-density fibreboard (MDF), oriented strand board (OSB) and particle board (chipboard). All plywoods bind resin and wood fibre sheets (cellulose cells are long, strong and thin) to form a composite material. This alternation of the grain is called ''cross-graining'' and has several important benefits: it reduces the tendency of wood to split when nailed at the edges; it reduces expansion and shrinkage, providing improved dimensional stability; and it makes the strength of the panel consistent across all directions. There is usually an odd number of plies, so that the sheet is balanced—this reduces warping. Because plywood is bonded with grains running against one another and with an odd number of composit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
