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67-462: The Hobie Getaway is an American catamaran sailboat , that was designed by Hobie Cat and first built in 2001. The boat has built by Hobie Cat in the United States since 2001, and remained in production in 2021. The Getaway is a small recreational catamaran, with the dual hulls built of rotomolded polyethylene . It has a fractional sloop rig, including a roller furling jib and

134-591: A moon pool between the hulls. Two Cold War-era submarine rescue ships , USS Pigeon and USS Ortolan of the US Navy , were also catamarans, but did not have the moon pool feature. The use of catamarans as high-speed naval transport was pioneered by HMAS Jervis Bay , which was in service with the Royal Australian Navy between 1999 and 2001. The US Military Sealift Command now operates several Expeditionary Fast Transport catamarans owned by

201-408: A boat. Choosing a catamaran offers increased speed at the expense of reduced load per unit of cost. Howard and Doane describe the following tradeoffs between cruising monohulls and catamarans: A long-distance, offshore cruising monohull may be as short as 30 feet (9.1 m) for a given crew complement and supporting supplies, whereas a cruising catamaran would need to be 40 feet (12 m) to achieve

268-547: A catamaran design to accommodate the vessel's stealth features. The Tuo Chiang-class corvette is a class of Taiwanese -designed fast and stealthy multi-mission wave-piercing catamaran corvettes first launched in 2014 for the Republic of China (Taiwan) Navy . Island Southeast Asia The terms Island Southeast Asia and Insular Southeast Asia are sometimes given the same meaning as Maritime Southeast Asia. Other definitions restrict Island Southeast Asia to just

335-440: A catamaran's hulls imparts stability through resistance to rolling and overturning; no ballast is required. Catamarans typically have less hull volume, smaller displacement , and shallower draft (draught) than monohulls of comparable length. The two hulls combined also often have a smaller hydrodynamic resistance than comparable monohulls, requiring less propulsive power from either sails or motors. The catamaran's wider stance on

402-531: A catamaran's two hulls ranges from a simple frame strung with webbing to support the crew to a bridging superstructure incorporating extensive cabin or cargo space. Catamarans from Oceania and Maritime Southeast Asia became the inspiration for modern catamarans. Until the 20th century catamaran development focused primarily on sail-driven concepts. The word "catamaran" is derived from the Tamil word, kattumaram (கட்டுமரம்), which means "logs bound together" and

469-414: A conventional catamaran. They are distinguished from SWATH catamarans, in that the buoyant part of the hull is not tubular. The spanning bridge deck may be configured with some of the characteristics of a normal V-hull, which allows it to penetrate the crests of waves. Wave-piercing catamaran designs have been employed for yachts, passenger ferries, and military vessels. A catamaran configuration fills

536-415: A full-batten mainsail, dual transom-hung rudders and no keel or daggerboards . It displaces 390 lb (177 kg) and can carry 1,000 lb (454 kg) of occupants. A mast-top float to prevent the boat turning turtle is included as standard equipment. Wing seats for hiking out and trapezing from are optional. A trapeze is also optional. The boat has a draft of 8.4 in (21 cm) with

603-576: A hero's welcome in France. In 1939, he published his experiences in a book, Kaimiloa , which was translated into English in 1940. Roland and Francis Prout experimented with catamarans in 1949 and converted their 1935 boat factory in Canvey Island , Essex (England), to catamaran production in 1954. Their Shearwater catamarans easily won races against monohulls. Yellow Bird, a 1956-built Shearwater III , raced successfully by Francis Prout in

670-405: A higher efficiency per unit of payload for monohulls. Two advances over the traditional catamaran are the small-waterplane-area twin hull (SWATH) and the wave-piercing configuration—the latter having become a widely favored design. SWATH reduces wave-generating resistance by moving displacement volume below the waterline, using a pair of tubular, submarine-like hulls, connected by pylons to

737-400: A lattice scaffold. The frame of the tourist catamaran can be made of both aluminum (duralumin) pipes and from felled tree trunks. The inflatable part has two layers—an airtight balloon with inflation holes and a shell made of dense tissue, protecting the balloon from mechanical damage. Advantages of such catamarans are light weight, compactness and convenience in transportation (the whole product

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804-521: A majority of islands in this vast region remain uninhabited by humans. The land and sea area of Maritime Southeast Asia exceeds 2 million km . These are more than 25,000 islands of the area that comprise many smaller archipelagoes. The major groupings are: The seven largest islands are Borneo , Sumatra , Sulawesi and Java in Indonesia; and Luzon and Mindanao in the Philippines. In

871-612: A multihull steel vessel named Binave (Twin Ship), a new type of catamaran which was constructed and tested in Bilbao ( Spain ) in 1918. The innovative design included two 30 HP Hispano-Suiza marine engines and could modify its configuration when sailing , positioning two rudders at the stern of each float, with the propellers also placed aft . In 1936, Eric de Bisschop built a Polynesian "double canoe" in Hawaii and sailed it home to

938-400: A niche where speed and sea-kindliness is favored over bulk capacity. In larger vessels, this niche favors car ferries and military vessels for patrol or operation in the littoral zone. Recreational and sport catamarans typically are designed to have a crew of two and be launched and landed from a beach. Most have a trampoline on the bridging structure, a rotating mast and full-length battens on

1005-709: A sea barrier that has persisted, as far as is known, even at the lowest sea levels of glacial maxima of the Pleistocene and the Holocene . Therefore we know when watercraft of some (admittedly unknown) description must have been used by humans to cross the sea. As of 2017, there were over 540 million people living in the region, with the most populated island being Java . The people living there are predominantly from Austronesian subgroupings and correspondingly speak western Malayo-Polynesian languages . This region of Southeast Asia shares social and cultural ties with both

1072-586: A seaway. The Swiss-registered wave-piercing catamaran, Tûranor PlanetSolar , which was launched in March 2010, is the world's largest solar powered boat. It completed a circumnavigation of the globe in 2012. The 1970s saw the introduction of catamarans as high-speed ferries , as pioneered by Westermoen Hydrofoil in Mandal , Norway, which launched the Westamaran design in 1973. The Stena Voyager

1139-533: A trimaran, replacing its soft sail rig with a towering wing sail —the largest sailing wing ever built. In the waters off Valencia , Spain in February 2010, the BMW Oracle Racing trimaran with its powerful wing sail proved to be superior. This represented a break from the traditional monohulls that had always been sailed in previous America's Cup series. On San Francisco Bay, the 2013 America's Cup

1206-629: Is (as of 2014) the fastest passenger ship in service. The first warship to be propelled by a steam engine, named Demologos or Fulton and built in the United States during the War of 1812 , was a catamaran with a paddle wheel between her hulls. In the early 20th Century several catamarans were built as submarine salvage ships: SMS Vulkan and SMS Cyclop of Germany , Kommuna of Russia , and Kanguro of Spain , all designed to lift stricken submarines by means of huge cranes above

1273-492: Is a transitional zone adjacent to the Wallace Line that is termed Wallacea . This is a zone where examples of animal and plant species from both sides can be found, but, particularly on smaller islands, there may be a greatly reduced number of terrestrial species. The biographical division of the region is important for understanding the spread of both modern and archaic humans into the region. The Wallace Line represents

1340-663: Is a type of single-hulled raft made of three to seven tree trunks lashed together. The term has evolved in English usage to refer to unrelated twin-hulled vessels. Catamaran-type vessels were an early technology of the Austronesian peoples . Early researchers like Heine-Geldern (1932) and Hornell (1943) once believed that catamarans evolved from outrigger canoes , but modern authors specializing in Austronesian cultures like Doran (1981) and Mahdi (1988) now believe it to be

1407-493: Is almost entirely due to surface friction. When boat speed increases and waves are generated the resistance is dependent on several design factors, particularly hull displacement to length and hull separation to length ratio, it is a non trivial resistance curve with many small peaks as wave trains at various speeds combine and cancel For powered catamarans, this implies smaller power plants (although two are typically required). For sailing catamarans, low forward resistance allows

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1474-535: Is packed in one pack-backpack, suitable for air traffic standards) and the speed of assembly (10–15 minutes for the inflation). All-inflatable models are available in North America. A cata-raft design has been used on the Colorado River to handle heavy whitewater, yet maintain a good speed through the water. Cruising sailors must make trade-offs among volume, useful load, speed, and cost in choosing

1541-474: The Comoros , retained the twin-hull and the single outrigger canoe types, but the technology for double outriggers never reached them (although it exists in western Melanesia ). To deal with the problem of the instability of the boat when the outrigger faces leeward when tacking, they instead developed the shunting technique in sailing, in conjunction with reversible single-outriggers. Despite their being

1608-605: The Equator . Island Southeast Asia is crossed by the Wallace Line . This line divides the flora and fauna of Asia from that of Australia and New Guinea with stretches of water that have always been too wide for plant and animal species to cross readily. The gaps are considered to be large enough to make accidental rafting from one side to another to be unlikely events. Apart from birds, species that have managed to cross this line include those that have been moved by humans. There

1675-600: The Old Javanese term " Nusantara " is also used as a synonym for Maritime Southeast Asia. The term, however, is nationalistic and has shifting boundaries. It usually only encompasses Peninsular Malaysia , the Sunda Islands , Maluku , and often Western New Guinea and excludes the Philippines . Stretching for several thousand kilometres, the area features a very large number of islands and boasts some of

1742-523: The Song dynasty passed decrees enabling private trade fleets. Demand for Southeast Asian products and trade was partially driven by the increase in China's population in this era, whereby it doubled from 75 to 150 million, as well as the loss of access to the northern Silk Road . The first record of Chinese trading ships venturing to Southeast Asia (which they called Nan Hai ) appear by the 11th century, though

1809-434: The waterline length is too speed-dependent to be meaningful—as with a planing hull. It uses a reference length, the cubic root of the volumetric displacement of the hull, V , where u is the relative flow velocity between the sea and ship, and g is acceleration due to gravity : Calm water transportation efficiency of a vessel is proportional to the full-load displacement and the maximum calm-water speed, divided by

1876-544: The 1960s, is in the collection of the National Maritime Museum Cornwall . Prout Catamarans , Ltd. designed a mast aft rig with the mast aft of midships to support an enlarged jib—more than twice the size of the design's reduced mainsail; it was produced as the Snowgoose model. The claimed advantage of this sail plan was to diminish any tendency for the bows of the vessel to dig in. In

1943-686: The Imperial Court, but the Hokkien diaspora facilitated informal trade and cultural exchange with Southeast Asia, settling among Southeast Asian polities during this time period. Despite not having the official sanction of the Chinese government these communities formed business and trade networks between cities such as Melaka , Hội An and Ayutthaya . Many of these Chinese businesspeople integrated into their new countries, becoming political officials and diplomats. Trade with China ceased after

2010-557: The Tenasserim Provinces for several years". Later that century, the American Nathanael Herreshoff constructed a twin-hulled sailing boat of his own design (US Pat. No. 189,459). The craft, Amaryllis , raced at her maiden regatta on June 22, 1876, and performed exceedingly well. Her debut demonstrated the distinct performance advantages afforded to catamarans over the standard monohulls. It

2077-560: The US Navy commissioned the construction of a SWATH ship to test the configuration. SWATH vessels compare with conventional powered catamarans of equivalent size, as follows: Wave-piercing catamarans (strictly speaking they are trimarans , with a central hull and two outriggers) employ a low-buoyancy bow on each hull that is pointed at the water line and rises aft, up to a level, to allow each hull to pierce waves, rather than ride over them. This allows higher speeds through waves than for

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2144-586: The US Navy; they are used for high speed transport of military cargo, and to get into shallow ports. The Makar -class is a class of two large catamaran-hull survey ships built for the Indian Navy . As of 2012, one vessel, INS Makar (J31) , was in service and the second was under construction. First launched in 2004 at Shanghai, the Houbei class missile boat of the People's Liberation Army Navy (PLAN) has

2211-414: The bridge deck with a narrow waterline cross-section. The submerged hulls are minimally affected by waves. The SWATH form was invented by Canadian Frederick G. Creed , who presented his idea in 1938 and was later awarded a British patent for it in 1946. It was first used in the 1960s and 1970s as an evolution of catamaran design for use as oceanographic research vessels or submarine rescue ships. In 1990,

2278-490: The catamaran has an initial resistance to heeling that is seven times that of the monohull. Compared with a monohull, a cruising catamaran sailboat has a high initial resistance to heeling and capsize—a fifty-footer requires four times the force to initiate a capsize than an equivalent monohull. One measure of the trade-off between speed and carrying capacity is the displacement Froude number (Fn V ) , compared with calm water transportation efficiency . Fn V applies when

2345-553: The collapse of the Song dynasty due to invasions and famine. It was restored during the Ming dynasty from the 14th to 16th centuries. The naval expeditions of Zheng He between 1405 and 1431 also played a critical role in opening up of China to increased trade with Southeast Asian polities. The Maritime Silk Route was disrupted by the colonial era in the 15th century, essentially being replaced with European trade routes. Shipbuilding of

2412-409: The corresponding power required. Large merchant vessels have a Fn V between one and zero, whereas higher-performance powered catamarans may approach 2.5, denoting a higher speed per unit volume for catamarans. Each type of vessel has a corresponding calm water transportation efficiency, with large transport ships being in the range of 100–1,000, compared with 11-18 for transport catamarans, denoting

2479-736: The first millennium AD. It continued up to historic times. By around the 2nd century BCE, the Neolithic Austronesian trade networks in Southeast Asia connected with the maritime trade routes of South Asia , the Middle East , eastern Africa , and the Mediterranean , becoming what is now known as the Maritime Silk Route (or Maritime Silk Road). In addition to Austronesian sailors, the route

2546-483: The formerly dominant Southeast Asian trading ships ( jong , the source of the English term "junk") declined until it ceased entirely by the 17th century. Although Chinese-built chuán survived until modern times. There was new demand for spices from Southeast Asia and textiles from India and China, but these were now linked with direct trade routes to the European market, instead of passing through regional ports of

2613-543: The highest in Mount Kinabalu in Sabah , Malaysia, with a height of 4,095.2 m (13,436 ft) and Puncak Jaya on Papua, Indonesia at 4,884 m (16,024 ft). Other high mountains in the archipelago include Puncak Mandala , Indonesia at 4,760 m (15,620 ft) and Puncak Trikora , Indonesia, at 4,750 m (15,580 ft). The climate throughout the archipelago is tropical, owing to its position on

2680-450: The islands between mainland Southeast Asia and the continental shelf of Australia and New Guinea. There is some variability as to whether Taiwan is included in this. Peter Bellwood includes Taiwan in his definition, as did Robert Blust , whilst there are examples that do not. The 16th-century term " East Indies " and the later 19th-century term " Malay Archipelago " are also used to refer to Maritime Southeast Asia. In Indonesia,

2747-616: The latter groups (Micronesian and Polynesian groups) being from this region. The maritime connectivity within the region has been linked to it becoming a distinct cultural and economic area, when compared to the 'mainland' societies in the rest of Southeast Asia. This region stretches from the Yangtze delta in China down to the Malay Peninsula , including the South China Sea , Gulf of Thailand and Java Sea . The region

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2814-399: The mainsail. Performance versions often have trapezes to allow the crew to hike out and counterbalance capsize forces during strong winds on certain points of sail. For the 33rd America's Cup , both the defender and the challenger built 90-foot (27 m) long multihulls. Société Nautique de Genève , defending with team Alinghi , sailed a catamaran. The challenger, BMW Oracle Racing, used

2881-599: The material cultures of India and China. Indonesians , in particular were trading in spices (mainly cinnamon and cassia ) with East Africa using catamaran and outrigger boats and sailing with the help of the Westerlies in the Indian Ocean. This trade network expanded to reach as far as Africa and the Arabian Peninsula , resulting in the Austronesian colonization of Madagascar by the first half of

2948-567: The mid-twentieth century, beachcats became a widespread category of sailing catamarans, owing to their ease of launching and mass production. In California, a maker of surfboards , Hobie Alter , produced the 250-pound (110 kg) Hobie 14 in 1967, and two years later the larger and even more successful Hobie 16 . As of 2016, the Hobie 16 was still being produced with more than 100,000 having been manufactured. Catamarans were introduced to Olympic sailing in 1976. The two-handed Tornado catamaran

3015-477: The more "primitive form" of outrigger canoes, they were nonetheless effective, allowing seafaring Polynesians to voyage to distant Pacific islands . The following is a list of traditional Austronesian catamarans: The first documented example of twin-hulled sailing craft in Europe was designed by William Petty in 1662 to sail faster, in shallower waters, in lighter wind, and with fewer crew than other vessels of

3082-735: The natural sciences, the region is sometimes known as the Maritime Continent . It also corresponds to the biogeographical region of Malesia (not to be confused with "Malaysia"), with shared tropical flora and fauna . Geologically, the archipelago is one of the most active volcanic regions in the world, producing many volcanoes , especially in Java , Sumatra , and the Lesser Sunda Islands region, where most volcanoes over 3,000 m (9,800 ft) are situated. Tectonic uplifts also produced large mountains, including

3149-405: The opposite. Two canoes bound together developed directly from minimal raft technologies of two logs tied together. Over time, the twin-hulled canoe form developed into the asymmetric double canoe, where one hull is smaller than the other. Eventually the smaller hull became the prototype outrigger , giving way to the single outrigger canoe, then to the reversible single outrigger canoe. Finally,

3216-752: The peoples of mainland Southeast Asia and with other Austronesian peoples in the Pacific . Islam is the predominant religion, with Christianity being the dominant religion in the Philippines and East Timor. Buddhism , Hinduism , and traditional Animism are also practiced among large populations. Historically, the region has been referred to as part of Greater India , as seen in Coedes' Indianized States of Southeast Asia , which refers to it as "Island Southeast Asia"; and within Austronesia or Oceania , due to shared ethnolinguistic and historical origins of

3283-443: The racing versions recording well over 400 nautical miles (460 mi; 740 km) per day. In addition, they do not heel more than 10-12 degrees, even at full speed on a reach. Powered cruising catamarans share many of the amenities found in a sail cruising catamaran. The saloon typically spans two hulls wherein are found the staterooms and engine compartments. As with sailing catamarans, this configuration minimizes boat motion in

3350-473: The richest marine, flora and fauna biodiversity on Earth. The main demographic difference that sets Maritime Southeast Asia apart from modern Mainland Southeast Asia is that its population predominantly belongs to Austronesian groups. The region contains some of the world's most highly urbanized areas—the Greater Manila Area , Greater Jakarta , Singapore , and Greater Kuala Lumpur —and yet

3417-410: The rudders down and 3 in (7.6 cm) with rudders up. The boat was redesigned in 2017 to give it a length overall of 17.00 ft (5.18 m), an increase from the original design 16.58 ft (5.05 m). Catamaran A catamaran ( / ˌ k æ t ə m ə ˈ r æ n / ) (informally, a "cat") is a watercraft with two parallel hulls of equal size. The wide distance between

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3484-410: The sails to derive power from attached flow , their most efficient mode—analogous to a wing—leading to the use of wingsails in racing craft. Catamarans rely primarily on form stability to resist heeling and capsize. Comparison of heeling stability of a rectangular-cross section monohull of beam, B , compared with two catamaran hulls of width B /2, separated by a distance, 2× B , determines that

3551-439: The same capacity. In addition to greater speed, catamarans draw less water than do monohulls— as little as 3 feet (0.91 m) —and are easier to beach. Catamarans are harder to tack and take up more space in a marina. Cruising catamarans entail added expense for having two engines and two rudders. Tarjan adds that cruising catamarans boats can maintain a comfortable 300 nautical miles (350 mi; 560 km) per day passage, with

3618-572: The single outrigger types developed into the double outrigger canoe (or trimarans ). This would also explain why older Austronesian populations in Island Southeast Asia tend to favor double outrigger canoes, as it keeps the boats stable when tacking . But they still have small regions where catamarans and single-outrigger canoes are still used. In contrast, more distant outlying descendant populations in Oceania , Madagascar , and

3685-605: The time. However, the unusual design met with skepticism and was not a commercial success. The design remained relatively unused in the West for almost 160 years until the early 19th-century, when the Englishman Mayflower F. Crisp built a two-hulled merchant ship in Rangoon, Burma . The ship was christened Original . Crisp described it as "a fast sailing fine sea boat; she traded during the monsoon between Rangoon and

3752-399: The trade routes during this period remained dominated by Srivijaya . The Chinese development of their own maritime technologies led to the establishment of Chinese trading colonies in Southeast Asia, a boom in the maritime trade, and the emergence of the ports of " Chinchew " ( Quanzhou ) and " Canton " ( Guangzhou ) as regional trade centers in China. Chinese trade was strictly controlled by

3819-424: The water and greater stability (initial resistance to capsize). Choosing between a monohull and catamaran configuration includes considerations of carrying capacity, speed, and efficiency. At low to moderate speeds, a lightweight catamaran hull experiences resistance to passage through water that is approximately proportional to its speed. A displacement monohull has the same relationship at low speed since resistance

3886-459: The water can reduce both heeling and wave-induced motion, as compared with a monohull, and can give reduced wakes. Catamarans were invented by the Austronesian peoples , and enabled their expansion to the islands of the Indian and Pacific Oceans . Catamarans range in size from small sailing or rowing vessels to large naval ships and roll-on/roll-off car ferries. The structure connecting

3953-590: The water. Virtually all of the new mega-cats were built of pre-preg carbon fiber for strength and the lowest possible weight. The top speeds of these boats can approach 50 knots (58 mph; 93 km/h). The Race was won by the 33.50 m (109.9 ft)-long catamaran Club Med skippered by Grant Dalton . It went round the globe in 62 days at an average speed of 18 knots (21 mph; 33 km/h). Whitewater catamaran—sometimes called "cata-rafts"—for whitewater sports are widely spread in post-Soviet countries . They consists of two inflatable hulls connected with

4020-411: Was a circumnavigation challenge which departed from Barcelona, Spain, on New Year's Eve, 2000. Because of the prize money and prestige associated with this event, four new catamarans (and two highly modified ones) over 100 feet (30 m) in length were built to compete. The largest, PlayStation , owned by Steve Fossett , was 125 feet (38 m) long and had a mast which was 147 feet (45 m) above

4087-458: Was a significant export of east Africa, leading some authors to label the western leg of the trade route as the "Maritime Ivory Route". The Maritime Silk Route flourished until around the 15th century CE. Han and Tang dynasty records mention large Southeast Asian ships (that they called the kunlun po , 崑崙舶, "ships of the kunlun ") visiting coastal Chinese cities regularly to trade from as early as 3rd century CE. By around 900 to 1000 CE,

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4154-641: Was also heavily used by Tamil , Persian , and Arab sailors. It allowed the exchange of goods from East and Southeast Asia on one end, all the way to Europe and eastern Africa on the other. Although usually spoken of in modern times in the context of Eurocentric and Sinocentric luxury goods, the goods carried by the trading ships varied by which product was in demand by region and port. They included ceramics, glass, beads, gems, ivory, fragrant wood, metals (both raw and finished goods), textiles (including silk), food (including grain, wine, and spices), aromatics, and animals, among others. Ivory , in particular,

4221-432: Was an example of a large, fast ferry, typically traveling at a speed of 46 miles per hour (74 km/h), although it was capable of over 70 miles per hour (110 km/h). The Australian island Tasmania became the site of builders of large transport catamarans— Incat in 1977 and Austal in 1988 —each building civilian ferries and naval vessels. Incat built HSC Francisco , a High-Speed trimaran that, at 58 knots,

4288-687: Was as a result of this event, the Centennial Regatta of the New York Yacht Club, that catamarans were barred from regular sailing classes, and this remained the case until the 1970s. On June 6, 1882, three catamarans from the Southern Yacht Club of New Orleans raced a 15 nm course on Lake Pontchartrain and the winning boat in the catamaran class, Nip and Tuck , beat the fastest sloop's time by over five minutes. In 1916, Leonardo Torres Quevedo patented

4355-523: Was dominated by the thalassocratic cultures of the Austronesian peoples . The first true long-distance maritime trade network in the Indian Ocean was by the Austronesian peoples of Island Southeast Asia. They established trade routes with Southern India and Sri Lanka as early as 1500 BC, ushering an exchange of material culture (like catamarans , outrigger boats , lashed-lug and sewn-plank boats , and paan ) and cultigens (like coconuts , sandalwood , and sugarcane ); as well as connecting

4422-486: Was sailed in 72-foot (22 m) long AC72 catamarans (craft set by the rules for the 2013 America's Cup). Each yacht employed hydrofoils and a wing sail. The regatta was won 9–8 by Oracle Team USA against the challenger, Emirates Team New Zealand , in fifteen matches because Oracle Team USA had started the regatta with a two-point penalty. Yachting has seen the development of multihulls over 100 feet (30 m) in length. " The Race " helped precipitate this trend; it

4489-731: Was selected for the multihull discipline in the Olympic Games from 1976 through 2008. It was redesigned in 2000. The foiling Nacra 17 was used in the Tokyo 2020 Olympics, which were held in 2021; after the 2015 adoption of the Nacra 15 as a Youth World Championships class and as a new class for the Youth Olympic Games. Catamarans have two distinct primary performance characteristics that distinguish them from displacement monohull vessels: lower resistance to passage through

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