A watercraft or waterborne vessel is any vehicle designed for travel across or through water bodies , such as a boat , ship , hovercraft , submersible or submarine .
89-449: 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 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
178-591: 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
267-407: 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
356-942: 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 . Watercraft Historically, watercraft have been divided into two main categories. Watercraft can be grouped into surface vessels , which include ships, yachts , boats, hydroplanes , wingships , unmanned surface vehicles , sailboards and human-powered craft such as rafts , canoes , kayaks and paddleboards ; underwater vessels , which include submarines, submersibles, unmanned underwater vehicles (UUVs), wet subs and diver propulsion vehicles ; and amphibious vehicles , which include hovercraft, car boats , amphibious ATVs and seaplanes . Many of these watercraft have
445-531: 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
534-410: 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
623-501: A good position in a tidal stream while drifting with the tide in or out of a river. In a modern yacht , motor-sailing – travelling under the power of both sails and engine – is a common method of making progress, if only in and out of harbour. Yangon Yangon , formerly romanized as Rangoon , is the capital of the Yangon Region and the largest city of Myanmar . Yangon served as
712-575: 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
801-404: 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
890-400: 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
979-609: 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
SECTION 10
#17328011094111068-400: 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
1157-677: 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
1246-583: 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
1335-674: A smaller hydrodynamic resistance than comparable monohulls, requiring less propulsive power from either sails or motors. The catamaran's wider stance on 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
1424-559: 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 was sailed in 72-foot (22 m) long AC72 catamarans (craft set by
1513-507: A variety of subcategories and are used for different needs and applications. The design of watercraft requires a tradeoff among internal capacity ( tonnage ), speed and seaworthiness . Tonnage is important for transport of goods, speed is important for warships and racing vessels, and the degree of seaworthiness varies according to the bodies of water on which a watercraft is used. Regulations apply to larger watercraft, to avoid foundering at sea and other problems. Design technologies include
1602-520: 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
1691-628: 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
1780-549: Is UTC/GMT +6:30 hours. 23 meters above sea level. Due to its location on the Irrawaddy Delta, intertidal flat ecosystems occur adjacent to the city. Yangon has a tropical monsoon climate (Am) under the Köppen climate classification system. The city features a lengthy wet season from May through October where a substantial amount of rainfall is received; and a dry season from November through April, where little rainfall
1869-839: Is a member of the Asian Network of Major Cities 21 . Yangon is Burma's main domestic and international hub for air, rail, and ground transportation. Yangon International Airport , located 12 miles (19 km) from the center, is the country's main gateway for domestic and international air travel. The airport has three terminals, known as T1, T2 and T3 which is also known as Domestic. It has direct flights to major cities in Asia, such as Tokyo , Shanghai , Seoul , Singapore , Hong Kong , Kuala Lumpur , Kolkata , and Dubai . Although domestic airlines offer service to about forty domestic locations, most flights are to tourist destinations such as Bagan , Mandalay , Heho and Ngapali , and to
SECTION 20
#17328011094111958-510: Is a proposed rapid transit system, due to begin construction in 2022 and be complete by 2027. Yangon has a 4,456-kilometre (2,769 mi) road network of all types (tar, concrete and dirt) in March 2011. Many of the roads are in poor condition and not wide enough to accommodate an increasing number of cars. The vast majority of Yangon residents cannot afford a car and rely on an extensive network of buses to get around. Over 300 public and private bus lines operate about 6,300 crowded buses around
2047-600: 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
2136-710: Is administered by the Yangon City Development Committee (YCDC). YCDC also coordinates urban planning . The city is made up of 33 townships and is part of Yangon Region . Yangon Region is divided into four districts, which overlap with the city's jurisdiction. The current mayor of Yangon is Maung Maung Soe . Each township is administered by a Township Development Committee, alongside local leaders who make decisions regarding city beautification and infrastructure. Myo-thit (lit. "New Towns", or satellite towns ) are not within such jurisdictions. List of Yangon City Townships by District: Yangon
2225-490: 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
2314-730: Is due to rule that no building should be more than 75% the height above sea level of Shwedagon Pagoda , which rises about 160 metres (520 ft). For instance, in 2015, a luxury housing project was cancelled due to its proximity to Shwedagon Pagoda. Critics of the project claimed that the project could cause structural damage to the pagoda. Aside from a few high-rise hotels and office towers, most high-rise buildings (usually 10 stories and up) are "condos" scattered across prosperous neighborhoods north of downtown such as Bahan , Dagon , Kamayut and Mayangon . Older satellite towns such as Thaketa , North Okkalapa , and South Okkalapa are lined mostly with one to two-story detached houses with access to
2403-571: Is heavily used by the local populace, selling about 150,000 tickets daily. The popularity of the commuter line has jumped since the government reduced petrol subsidies in August 2007. In 2017 the government of Japan provided more than US$ 200 million in finance to assist with a range of works including developing and maintaining the Yangon circular railway line, purchasing new carriages and upgrading signalling. The Yangon Urban Mass Rapid Transit
2492-516: Is highly expensive for most of its citizens. As the government allows only a few thousand cars to be imported each year in a country with over 50 million people, car prices in Yangon (and in Burma) are among the highest in the world. In July 2008, the two most popular cars in Yangon, 1986/87 Nissan Sunny Super Saloon and 1988 Toyota Corolla SE Limited, cost the equivalent of about US$ 20,000 and US$ 29,000 respectively. A sports utility vehicle, imported for
2581-414: Is illegal to drive trishaws , bicycles, and motorcycles. Since February 2010, pick-up truck bus lines have been forbidden to run in six townships of central Yangon, namely Latha , Lanmadaw , Pabedan , Kyauktada , Botahtaung and Pazundaung Townships . In May 2003, a ban on using car horns was implemented in six townships of Downtown Yangon to reduce noise pollution . In April 2004, the car horn ban
2670-623: Is known for its leafy avenues and fin-de-siècle architecture. The former British colonial capital has the highest number of colonial period buildings in south-east Asia. Downtown Yangon is still mainly made up of decaying colonial buildings. The former High Court , the former Secretariat buildings , the former St. Paul's English High School and the Strand Hotel are excellent examples of the bygone era. Most downtown buildings from this era are four-story mix-use (residential and commercial) buildings with 14-foot (4.3 m) ceilings, allowing for
2759-532: 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
Catamaran - Misplaced Pages Continue
2848-666: Is remarkably intact. The colonial-era commercial core is centered around the Sule Pagoda , which is reputed to be over 2,000 years old. The city is also home to the gilded Shwedagon Pagoda – Myanmar's most sacred and famous Buddhist pagoda. Yangon suffers from deeply inadequate infrastructure , especially compared to other major cities in Southeast Asia , such as Jakarta , Bangkok or Hanoi . Though many historic residential and commercial buildings have been renovated throughout central Yangon, most satellite towns that ring
2937-425: Is seen. It is primarily due to the heavy rainfall received during the rainy season that makes Yangon fall under the tropical monsoon climate category. During the course of year 1961 to 1990s, average temperatures show little variance, with average highs ranging from 29 to 36 °C (84 to 97 °F) and average lows ranging from 18 to 25 °C (64 to 77 °F). Yangon is prone to tropical cyclones every time of
3026-493: Is the eight-story apartment building . (In Yangon parlance, a building with no elevators (lifts) is called an apartment building and one with elevators is called a condominium . Condos which have to invest in a local power generator to ensure 24-hour electricity for the elevators are beyond the reach of most Yangonites.) Found throughout the city, eight-story apartment buildings provide inexpensive housing for many Yangonites. The apartments are usually eight stories high (including
3115-469: 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
3204-621: The Indian Rebellion of 1857 , the British sent Bahadur Shah II , the last Mughal emperor, to Yangon to live in exile. Colonial Yangon, with its spacious parks and lakes and mix of modern buildings and traditional wooden architecture, was known as "the garden city of the East." By the early 20th century, Yangon had public services and infrastructure on par with London. Before World War II , about 55% of Yangon's population of 500,000
3293-487: The capital of Myanmar until 2006, when the military government relocated the administrative functions to the purpose-built capital city of Naypyidaw in north central Myanmar. With over five million people, Yangon is Myanmar's most populous city and its most important commercial centre. Yangon boasts the largest number of colonial-era buildings in Southeast Asia, and has a unique colonial-era urban core that
3382-433: 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
3471-661: The 100-foot (30 m) Lanmadaw Road is followed by 30-foot (9.1 m)-wide 17th and 18th streets then the medium 50-foot (15 m) Sint-Oh-Dan Road, the 30-foot 19th and 20th streets, followed by another 100-foot (30 m) wide Latha Road, followed again by the two numbered small roads 21st and 22nd streets, and so on. The roads running parallel west to east were the Strand Road, Merchant Road, Maha Bandula (née Dalhousie) Road, Anawrahta (Fraser) Road, and Bogyoke Aung San (Montgomerie) Road. The largest and best maintained parks in Yangon are located around Shwedagon Pagoda . To
3560-586: 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 the mid-twentieth century, beachcats became
3649-422: The 1980s. Today, Greater Yangon encompasses an area covering nearly 600 square kilometres (230 sq mi). During Ne Win 's isolationist rule (1962–88), Yangon's infrastructure deteriorated through poor maintenance and did not keep up with its increasing population. In the 1990s, the military government's more open market policies attracted domestic and foreign investment, bringing a modicum of modernity to
Catamaran - Misplaced Pages Continue
3738-561: 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 was as
3827-558: 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
3916-584: 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
4005-412: 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,
4094-540: The capital Naypyidaw . Yangon Central Railway Station is the main terminus of Myanmar Railways ' 5,403-kilometre (3,357 mi) rail network whose reach covers Upper Myanmar ( Naypyidaw , Mandalay , Shwebo ), upcountry ( Myitkyina ), Shan hills ( Taunggyi , Lashio ) and the Taninthayi coast ( Mawlamyine , Dawei ). Yangon Circular Railway operates a 45.9-kilometre (28.5 mi) 39-station commuter rail network that connects Yangon's satellite towns. The system
4183-492: The capital of all British-ruled Burma after the British had captured Upper Burma in the Third Anglo-Burmese War of 1885. By the 1890s Yangon's increasing population and commerce gave birth to prosperous residential suburbs to the north of Royal Lake (Kandawgyi) and Inya Lake . The British also established hospitals including Rangoon General Hospital and colleges including Rangoon University . After
4272-486: 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
4361-722: The city continue to be profoundly impoverished and lack basic infrastructure. The name Yangon ( ရန်ကုန် ) is derived from the combination of the Burmese words yan ( ရန် ) and koun ( ကုန် ), which mean 'enemies' and 'run out of', respectively. This word combination can be translated as 'End of Strife'. The name is pronounced / ˌ j æ ŋ ˈ ɡ ɒ n / yang- GON in British English and / ˌ j ɑː n ˈ ɡ oʊ n / yahn- GOHN in American English. The former romanization, Rangoon ,
4450-407: The city had few human casualties, three-quarters of Yangon's industrial infrastructure was destroyed or damaged, with losses estimated at US$ 800 million. In November 2005, the military government designated Naypyidaw , 320 kilometres (199 mi) north of Yangon, as the new administrative capital, and moved much of the government to the newly developed city. Yangon remains the largest city and
4539-558: The city to its industrial back country. Still, much of Yangon remains without basic municipal services such as 24-hour electricity and regular garbage collection. Yangon has become much more indigenous Burmese in its ethnic make-up since independence. After independence, many South Asians and Anglo-Burmese left. Many more South Asians were forced to leave during the 1960s by Ne Win's xenophobic government. Nevertheless, sizeable South Asian and Chinese communities still exist in Yangon. The Anglo-Burmese have effectively disappeared, having left
SECTION 50
#17328011094114628-494: The city's electricity grid. Newer satellite towns such as North Dagon and South Dagon are in a grid layout. The satellite towns—old or new—receive little or no municipal services. Downtown Yangon 's road layout follows a grid pattern, based on four types of roads: The east–west grid of central was laid out by British military engineers Fraser and Montgomerie after the Second Anglo-Burmese War . The city
4717-514: The city's infrastructure. Some inner city residents were forcibly relocated to new satellite towns. Many colonial-period buildings were demolished to make way for high-rise hotels, office buildings, and shopping malls, leading the city government to place about 200 notable colonial-period buildings under the Yangon City Heritage List in 1996. Major building programs have resulted in six new bridges and five new highways linking
4806-422: The city, carrying over 4.4 million passengers a day. All buses and 80% of the taxis in Yangon run on compressed natural gas (CNG), following the 2005 government decree to save money on imported petroleum. Highway buses to other cities depart from Dagon Ayeyar Highway Bus Terminal for Irrawaddy delta region and Aung Mingala Highway Bus Terminal for other parts of the country. Motor transportation in Yangon
4895-527: The commercial and political hub of British Burma . After the war, the British moved the capital of British Burma from Moulmein (present-day Mawlamyine ) to Yangon. Based on the design by army engineer Lt. Alexander Fraser, the British constructed a new city on a grid plan on delta land, bounded to the east by the Pazundaung Creek and to the south and west by the Yangon River . Yangon became
4984-726: The construction of mezzanines . Despite their less-than-perfect conditions, the buildings remain highly sought after and most expensive in the city's property market. In 1996, the Yangon City Development Committee created a Yangon City Heritage List of old buildings and structures in the city that cannot be modified or torn down without approval. In 2012, the city of Yangon imposed a 50-year moratorium on demolition of buildings older than 50 years. The Yangon Heritage Trust , an NGO started by Thant Myint-U , aims to create heritage areas in Downtown, and attract investors to renovate buildings for commercial use. A latter-day hallmark of Yangon
5073-408: 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
5162-470: The country or intermarried with other Burmese groups. Yangon was the centre of major anti-government protests in 1974 , 1988 and 2007 . In particular, the 8888 Uprising resulted in the deaths of hundreds, if not thousands of Burmese civilians, many of them in Yangoon where hundreds of thousands of people flooded into the streets of the former capital city. The Saffron Revolution saw mass shootings and
5251-612: The enlarged town "Yangon". In the 1790s, the East India Company opened a factory in Yangon. The estimated population of Yangon in 1823 was about 30,000. The British captured Yangon during the First Anglo-Burmese War (1824–26), but returned the city to Burmese rule after the war. The city was destroyed by a fire in 1841. The British captured Yangon and all of Lower Burma in the Second Anglo-Burmese War of 1852, and subsequently transformed Yangon into
5340-468: The equivalent of around US$ 50,000, goes for US$ 250,000. Illegally imported unregistered cars are cheaper – typically about half the price of registered cars. Nonetheless, car usage in Yangon is on the rise, a sign of rising incomes for some, and already causes much traffic congestion in highway-less Yangon's streets. In 2011, Yangon had about 300,000 registered motor vehicles in addition to an unknown number of unregistered ones. Within Yangon city limits, it
5429-473: The former parading ground on important national days when Yangon was the capital. A few miles north of the pagoda lies the 37-acre (15-ha) Inya Lake Park – a favourite hangout place of Yangon University students, and a well-known place of romance in Burmese popular culture. Hlawga National Park and Allied War Memorial at the outskirts of the city are popular day-trip destinations with tourists. Yangon
SECTION 60
#17328011094115518-567: The ground floor) mainly because city regulations, until February 2008, required that all buildings higher than 75 feet (23 m) or eight stories to install lifts. The code calls for elevators in buildings higher than 62 feet (19 m) or six stories, likely ushering in the era of the six-story apartment building. Although most apartment buildings were built only within the last 20 years, they look much older and rundown due to shoddy construction and lack of proper maintenance. Unlike other major Asian cities, Yangon does not have any skyscrapers. This
5607-526: The junta unfit to make such changes, nor by many publications and news bureaus, including, most notably, the BBC and foreign nations including the United Kingdom and the United States.) Since independence, Yangon has expanded outwards. Successive governments have built satellite towns such as Thaketa , North Okkalapa and South Okkalapa in the 1950s to Hlaingthaya , Shwepyitha and South Dagon in
5696-593: The late 1980s, however, the city began a rapid spread north to where Yangon International Airport now stands. But the result is a stretching tail on the city, with the downtown area well removed from its geographic centre. The city's area has steadily increased from 72.52 square kilometres (28.00 sq mi) in 1901 to 86.2 square kilometres (33.3 sq mi) in 1940 to 208.51 square kilometres (80.51 sq mi) in 1974, to 346.13 square kilometres (133.64 sq mi) in 1985, and to 598.75 square kilometres (231.18 sq mi) in 2008. Downtown Yangon
5785-443: 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 a trimaran, replacing its soft sail rig with
5874-476: 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
5963-519: The most important commercial, economic and cultural center of Myanmar. On 7 May 2005, a series of coordinated bombings occurred in the city of Yangon, Myanmar. Eleven people were killed in the attack, and one of the 162 people that were injured was a member of the LCMS mission team to Myanmar. In the 2020s, life in Yangon was greatly affected by the COVID-19 pandemic and 2021 coup d'état . The city
6052-402: 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,
6141-442: 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
6230-413: 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
6319-407: 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
6408-439: 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
6497-569: 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
6586-430: The south-east of the gilded stupa is the most popular recreational area in the city – Kandawgyi Lake . The 150-acre (61-ha) lake is surrounded by the 110-acre (45-ha) Kandawgyi Nature Park , and the 69.25-acre (28-ha) Yangon Zoological Gardens , which consists of a zoo, an aquarium and an amusement park. West of the pagoda towards the former Hluttaw (Parliament) complex is the 130-acre (53-ha) People's Square and Park ,
6675-603: 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
6764-585: The town from 1364 to 1392, and her grandniece, Shin Saw Pu , who later became the only female queen regnant in Burmese history . Queen Saw Pu built a palace next to the Shwedagon Pagoda in the town in 1460 and spent her semi-retired life at that palace until her death in 1471. In 1755, King Alaungpaya , the founder of the Konbaung dynasty captured Dagon, added settlements around it, and called
6853-438: The use of computer modeling and ship model basin testing before construction. Watercraft propulsion can be divided into five categories. Any one watercraft might use more than one of these methods at different times or in conjunction with each other. For instance, early steamships often set sails to work alongside the engine power. Before steam tugs became common, sailing vessels would back and fill their sails to maintain
6942-480: The use of crematoria in Yangoon by the Burmese government to erase evidence of their crimes against monks, unarmed protesters, journalists and students. The city's streets saw bloodshed each time as protesters were gunned down by the government, most notably during the 1988 , 2007 , and the 2021 mass protests, all of which were started in Yangon itself, signifying its importance as the cultural centre of Burma . In May 2008, Cyclone Nargis hit Yangon. While
7031-424: 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
7120-589: 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
7209-534: The year. In 2008, Cyclone Nargis made landfall as a Category 4 cyclone, making it the worst cyclone on the country's record. Until the mid-1990s, Yangon remained largely constrained to its traditional peninsula setting between the Bago , Yangon, and Hlaing Rivers . People moved in, but little of the city moved out. Maps from 1944 show little development north of Inya Lake and areas that are now layered in cement and stacked with houses were then virtual backwaters. Since
7298-484: Was Indian or South Asian , and only about a third was Bamar (Burman). Karens , Chinese , Anglo-Burmese and others made up the rest. After World War I , Yangon became the center of the Burmese independence movement, with leftist Rangoon University students leading the way. Three nationwide strikes against British rule in 1920, 1936, and 1938 all began in Yangon. Yangon was under Japanese occupation (1942–45), and incurred heavy damage during World War II. The city
7387-411: 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
7476-429: 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,
7565-616: Was based on the Rakhine dialect , and pronounced / r æ ŋ ˈ ɡ uː n / rang- GOON in English. Yangon was founded as Dagon in the early 11th century ( c. 1028–1043 ) by the Mon people , who inhabited Lower Burma at that time. Dagon became an important pilgrimage pagoda town, starting in the 14th century, during the Hanthawaddy Kingdom . Notable governors of Dagon included Princess Maha Dewi , who ruled
7654-505: Was later developed by the Public Works Department and Bengal Corps of Engineers. The pattern of south to north roads is as follows: one broad 100-foot (30 m) wide broad road, two narrow streets, one mid-size street, two more narrow streets, and then another 100-foot (30 m) wide broad road. This order is repeated from west to east. The narrow streets are numbered; the medium and broad roads are named. For example,
7743-669: Was retaken by the Allies in May 1945. Yangon became the capital of the Union of Burma on 4 January 1948 when the country gained independence from British rule. Soon after Burma's independence in 1948, many colonial-era names of streets and parks were changed to more nationalistic Burmese names. In 1989, the military junta changed the city's English name to "Yangon", along with many other changes in English transliteration of Burmese names. (The changes have not been accepted by many Burmese who consider
7832-726: 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
7921-586: Was the location of mass protests in response to the coup. The pandemic and protests prompted authorities to enforce numerous lockdowns and curfews . The city's economy subsequently slowed. Yangon is located in Lower Burma (Myanmar) at the convergence of the Yangon and Bago Rivers about 30 km (19 mi) away from the Gulf of Martaban at 16°48' North, 96°09' East (16.8, 96.15). Its standard time zone
#410589