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circumnavigate

  (sûr'kəm-năv'ĭ-gāt') pronunciation
tr.v., -gat·ed, -gat·ing, -gates.
  1. To proceed completely around: circumnavigating the earth.
  2. To go around; circumvent: circumnavigate the downtown traffic.
circumnavigation cir'cum·nav'i·ga'tion n.
circumnavigator cir'cum·nav'i·ga'tor n.
 
 
Thesaurus: circumnavigate

verb

    To pass around but not through: bypass, circumvent, detour, go around, skirt. See seek/avoid.

 
Boating Encyclopedia: Circumnavigation

Defining more strictly a voyage around the world
There was a time when it was possible to sail around the world any way you chose, and then claim that you had completed a circumnavigation. Perhaps it’s the fact that more people are doing it these days, or perhaps it’s because of the insatiable need to keep breaking records; but, for whatever reason, a circumnavigation is now more strictly defined.The rule of thumb is that the route of a “true” circumnavigation must encompass two antipodes—points opposite each other on the surface of the globe. These are points that would be joined by a straight line passing through the center of the Earth.Furthermore, because by definition the word circumnavigation means a journey “around” the Earth, you can’t claim one for a voyage whose course merely runs from one point to the other and straight back along a reciprocal course; you have to make the round trip.


 
Wikipedia: circumnavigation

To circumnavigate a place, such as an island, a continent, or the Earth, is to travel all the way around it by boat or ship. More recently, the term has also been used to cover aerial round-the-world flights.

World circumnavigation

The route of a typical modern sailing circumnavigation, via the Suez Canal and the Panama Canal is shown in red; its antipodes are shown in yellow.
Enlarge
The route of a typical modern sailing circumnavigation, via the Suez Canal and the Panama Canal is shown in red; its antipodes are shown in yellow.

A basic definition of a world circumnavigation would be a route which covers at least a great circle, and in particular one which passes through at least one pair of points antipodal to each other.[1] In practice, different definitions of world circumnavigation are used, in order to accommodate practical constraints depending on the method of circumnavigation.

Nautical

The map on the right shows, in red, a typical sailing circumnavigation of the world by the trade winds and the Suez and Panama canals; overlaid in yellow are the points antipodal to all points on the route. It can be seen that the route roughly approximates a great circle, and passes through two pairs of antipodal points. This is a route followed by many cruising sailors; the use of the trade winds makes it a relatively easy sail, although it passes through a number of zones of calms or light winds.

The route of a typical yacht racing circumnavigation is shown in red; its antipodes are shown in yellow.
Enlarge
The route of a typical yacht racing circumnavigation is shown in red; its antipodes are shown in yellow.

In yacht racing, a round-the-world route approximating a great circle would be quite impractical, particularly in a non-stop race where use of the Panama and Suez Canals would be impossible. Yacht racing therefore defines a world circumnavigation to be a passage of at least 21,600 nautical miles (40,000 km) in length which crosses the equator, crosses every meridian in the same direction and finishes in the same port as it starts.[2] The map on the left shows the route of the Vendée Globe round-the-world race in red; overlaid in yellow are the points antipodal to all points on the route. It can be seen that the route does not pass through any pairs of antipodal points. Since the winds in the lower latitudes predominantly blow west-to-east it can be seen that there is an easier route (west-to-east) and a harder route (east-to-west) when circumnavigating by sail; this difficulty is magnified for square-rig vessels..

Since the advent of world cruises in 1922, by Cunard's Lanconia, thousands of people have completed circumnavigations of the globe at a more leisurely pace. Typically, these voyages begin in New York City or Southampton, and proceed westward. Routes vary, either travelling through the Caribbean and then into the Pacific Ocean via the Panama Canal, or around Cape Horn. From there ships usually make their way to Hawaii, the islands of the South Pacific, Australia, New Zealand, then northward to Hong Kong, South East Asia, and India. At that point, again, routes may vary: one way is through the Suez Canal and into the Mediterranean; the other is around the Cape of Good Hope and then up the west coast of Africa. These cruises end in the port where they began.

Aviation

Aviation records take account of the wind circulation patterns of the world; in particular the jet streams, which circulate in the northern and southern hemispheres without crossing the equator. There is therefore no requirement to cross the equator, or to pass through two antipodal points, in the course of setting a round-the-world aviation record. Thus, for example, Steve Fossett's global circumnavigation by balloon was entirely contained within the southern hemisphere.

For powered aviation, the course of a round-the-world record must start and finish at the same point and cross all meridians; the course must be at least 36,787.559 kilometres (22,858.729 mi) long (which is the length of the Tropic of Cancer). The course must include set control points at latitudes outside the Arctic and Antarctic circles.[3]

In ballooning, which is totally at the mercy of the winds, the requirements are even more relaxed. The course must cross all meridians, and must include a set of checkpoints which are all outside of two circles, chosen by the pilot, having radii of 3,335.85 kilometres (2,072.80 mi) and enclosing the poles (though not necessarily centred on them).[4]

Surface travel

There is one successful polar circumnavigation journey; tracing a great circle around the globe 'vertically' i.e. through both poles. Sir Ranulph Fiennes, Charles Burton and their team successfully completed the Transglobe Expedition between 1979 and 1982. Transglobe was the first polar circumnavigation by surface travel, touching two true antipodes: the two poles of the Earth. They approximated the great circle passing through Greenwich, covering  miles ( km) in the process. "To the Ends of the Earth" is the classic book which describes this journey.

Human-powered

Though no one has completed a true circumnavigation solely by human power there have been notable attempts. Guidelines issued by Guinness World Records in December 2006 state that a human powered circumnavigation must travel a minimum of 36,787.559 km (the distance of the Tropic of Cancer), cross the Equator, and each leg must commence at the exact point where the last finished off. There are no requirements to reach antipodal points. To date no one has completed a human-powered circumnavigation according to the guidelines set by Guinness.[5]

Thomas Stevens was the first person to circle the globe by bicycle. The feat was accomplished between 1884 and 1886. While impressive at the time, a good portion of the trip was by steamer due to technical and political reasons.

The first person reputed to have walked around the world was American George Matthew Schilling between 1897 and 1904. The first person verified to have walked around the world was another American, David Kunst, between June 20, 1970 and October 10, 1974. Arthur Blessit has been walking around he world carrying a wooden cross since the 1960s. Robert Garside achieved the first fully-authenticated run around the world between 1997-2003, taking 2,062 days to cover 30,000 miles across 29 countries and 6 continents[6]. Heinz Stucke has been cycling around the world since 1965. These circumnavigations covered only land masses and used motorized transport to cross the oceans, so were not completely human-powered.

In 2006 Colin Angus finished a trip which circumnavigated the Northern Hemisphere by human power. But Angus' trip did not reach antipodal points so did not qualify. Then in 2007 Jason Lewis finished his a trip which did reach the antipodal points required for a true circumnavigation but was broken up by breaks using non human power travel over the course of many years and thus still does not qualify under the Guiness guidelines[7]. Aside from Guiness recognition, National Geographic did name Colin Angus as the first human powered circumnavigation[8].

Notable global maritime circumnavigations

Other notable maritime circumnavigations

Record maritime circumnavigations

  • Bruno Peyron (French), January–March 2005, fastest circumnavigation 50 days 16 hours 20 minutes 4 seconds.
  • Jean Luc van den Heede (French), 2004, fastest westward single-handed circumnavigation, 122 days 14 hours 3 minutes 49 seconds.
  • Adrienne Cahalan (Australian), February-March 2004, fastest woman to complete a circumnavigation (crew of "Cheyenne") 58 days 9 hours 32 minutes 45 seconds
  • Ellen MacArthur (English), 2004–2005, fastest single-handed 71 days 14 hours 18 minutes 33 seconds.
  • Jon Sanders holds the world record for completing a single-handed triple circumnavigation.
  • The RMS Queen Mary 2, at 148,528 gross tons, became the world's largest passenger ship to circumnavigate the globe during her 2007 world cruise.

Notable aerial and space circumnavigations

  • United States Army Air Service, 1924, first aerial circumnavigation, 175 days, covering 44,360 kilometres (27,553 miles).
  • LZ-127 Graf Zeppelin, 1929, piloted by Hugo Eckener set a record for the fastest aerial circumnavigation, 21 days, which was also the first circumnavigation in an airship.
  • On July 1, 1931, pilot Wiley Post and navigator Harold Gatty completed their circumnavigation of the world in a Lockheed Vega aeroplane, Winnie Mae, in 8 days, 15 hours and 51 minutes; the record for fastest circumnavigation was once again held by an aeroplane.
  • In 1932 Wolfgang von Gronau flew around the World with a twin engine Dornier seaplane, Gronland-Wal D-2053, in nearly four months, making 44 stops en route. He was accompanied by co-pilot Gerth von Roth, mechanic Franzl Hack, and radio operator Frtiz Albrecht.[11]
  • In 1933 Wiley Post repeated his circumnavigation by aeroplane, but this time solo, using an autopilot and radio direction finder. He made the first solo aerial circumnavigation in a time one day faster than his previous record: 7 days, 19 hours, 49 minutes, in which he covered 25,110 kilometres (15,596 mi).
  • In 1949 the United States Air Force B-50 Superfortress Lucky Lady II made the first non-stop aerial circumnavigation in 94 hours and 1 minute. Four in-air refuelings were required for the flight, which covered 37,743 kilometres (23,452 mi).
  • In 1961 Yuri Gagarin made the first human flight in space, and completed the first orbit of the Earth, in Vostok 1, in 108 minutes.
  • The second and third orbital circumnavigations, the first two to have multiple orbits, were made by Gherman Titov (17.5 orbits, a little over a day, for the Soviet Union) and John Glenn, in Friendship 7 (3 orbits, almost five hours, for the USA, first American orbital flight), respectively.
  • Geraldine Mock, 1964, first woman to complete a solo aerial circumnavigation.
  • Apollo 8, 1968, first human circumnavigation of the Earth-Moon system, 10 orbits around the moon in about 20 hours; total trip to the moon and back was more than 6 Earth days.
  • Don Taylor, 1976, first general aviation circumnavigation by homebuilt aircraft.
  • Dick Rutan and Jeana Yeager, 1986, Voyager, first non-refueled circumnavigation in an airplane, 9 days, 3 minutes and 44 seconds.
  • Bertrand Piccard and Brian Jones, 1999, first non-stop balloon circumnavigation in Breitling Orbiter 3, 19 days, 1 hour and 49 minutes, covering 42,810 kilometres.
  • Polly Vacher, 2001, in the smallest aircraft flown in a solo circumnavigation by a woman, via Australia and the Pacific.
  • Steve Fossett, 2 July 2002, first solo balloon circumnavigation.
  • Steve Fossett, 3 March, 2005, first non-stop, non-refueled solo circumnavigation in an airplane, 67 hours, covering 37,000 kilometres.
  • Steve Fossett, 11 February, 2006, longest non-stop, non-refueled solo flight (with circumnavigation) in an airplane, covering 42,469.5 kilometres (26,389.3 mi), in 76 hours and 45 minutes.[12][13]

Fictional circumnavigations

The most famous circumnavigation never happened. This is the story told in Jules Verne's 1872 adventure novel, Around the World in Eighty Days. Upper class Englishman Phileas Fogg and his servant Passepartout use a variety of transportation means and ingenuity to accomplish the adventurous feat. The book was freely adapted by Mike Todd into an Academy Award winning movie of the same name in 1956, starring David Niven and Cantinflas. The book (especially) and the movie are tributes to the new transportation possibilities of the early Industrial Revolution, with the coming of steamships, railways, etc. As this circumnavigation did not cross the Equator or reach antipodal points, it would not have been recognized by Guinness Records as an official circumnavigation (if such a thing had existed at that time).

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References


 
Translations: Translations for: Circumnavigate

Dansk (Danish)
v. tr. - sejle udenom

Nederlands (Dutch)
varen rond

Français (French)
v. tr. - faire le tour de, faire la circumnavigation de, passer (qch) au large

Deutsch (German)
v. - umfahren/-segeln

Ελληνική (Greek)
v. - (ναυτ.) περιπλέω

Italiano (Italian)
circumnavigare

Português (Portuguese)
v. - circunavegar

Русский (Russian)
совершать кругосветное плавание

Español (Spanish)
v. tr. - circunnavegar

Svenska (Swedish)
v. - segla omkring

中文(简体) (Chinese (Simplified))
环航

中文(繁體) (Chinese (Traditional))
v. tr. - 環航

한국어 (Korean)
v. tr. - 배로 일주하다

日本語 (Japanese)
v. - 周航する

العربيه (Arabic)
‏(فعل) أبحر حول العام أو قارة‏

עברית (Hebrew)
v. tr. - ‮הקיף (באונייה), הפליג מסביב‬


 
 

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Copyrights:

Dictionary. The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2007. Published by Houghton Mifflin Company. All rights reserved.  Read more
Thesaurus. Roget's II: The New Thesaurus, Third Edition by the Editors of the American Heritage® Dictionary Copyright © 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.  Read more
Boating Encyclopedia. The Practical Encyclopedia of Boating. Copyright © 2003, 1994, 1989, 1984, 1978, 1976, 1974 by McGraw-Hill Companies, Inc. All rights reserved.  Read more
Wikipedia. This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Circumnavigation" Read more
Translations. Copyright © 2007, WizCom Technologies Ltd. All rights reserved.  Read more

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