nautical mile

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nautical mile

1. a unit of length, used esp in navigation, equivalent to the average length of a minute of latitude, and corresponding to a latitude of 45?, i.e. 1852 m (6076.12 ft.)
2. a former British unit of length equal to 1853.18 m (6080 ft.), which was replaced by the international nautical mile in 1970

nautical mile

[′nȯd·ə·kəl ′mīl]
(navigation)
A unit of distance used principally in navigation; for practical consideration it is usually considered the length of 1 minute of any great circle of the earth, the meridian being the great circle most commonly used; the International Hydrographic Bureau in 1929 proposed a standard length of 1852 meters, which is known as the international nautical mile.

nautical mile

nautical mileclick for a larger image
Nautical mile.
A common unit for measuring distance. For most practical navigation purposes, all of the following units are used interchangeably as the equivalent of one nautical mile: (a) 6076.11549 ft or 1852 m; (b) one minute of arc of a great circle on a sphere having an area equal to that of the earth; (c) one minute of arc on the earth's equator, or 6076.10 ft (1851.9952 m); (d) one minute of arc of the meridian or one minute of latitude. This, however, varies between 1843 m (6046.58793 ft) at the equator, 1853 m (6079.3963 ft) at 45°N and S latitude, and 1862 m (6108.9238 ft) at the poles because the earth is an oblate spheroid. However, for the purpose of navigation, the International Nautical Mile of 1852 m (6076.1033 ft) has been adapted as the standard for air navigation.
References in periodicals archive ?
The irony is that it is thanks to the 1982 Law of the Sea Convention's innovation of the exclusive economic zone that the first 200 nautical miles of the continental shelf has at last been given unequivocal legal expression.
We walked 15 nautical miles and by the end of the day, we were only 21.
If 7,000 nautical miles (12,964 kilometers) is chosen as the target, additional city pairs will become possible: London-Singapore, Chicago-Beijing and New York-Tokyo.
The launch plan called for a built-in motor to propel the satellite to its final orbit at 438 nautical miles.
Its range with six occupants on board will be 1,800 nautical miles using instrument flight rules (IFR).
Attalla said that the Israeli authorities decision, which reduced the allowed fishing area from six to only three nautical miles off the Gaza coast, would carry destructive consequences on the already economically-devastated fishermen.
At present Singapore Airlines non-stop, 19-hour flight covering 8,388 nautical miles (15,544 kilometres) from Singapore to Newark, is the globe s longest unbroken commercial flight.
c) Northern limit: from the northern coasts of the kingdom until 3 nautical miles northward, located on (26 17.
The INSV Mhadei with Commander Dilip Dhonde at the helm completed over 14,000 Nautical miles of voyage.
He managed to get ahead of both sailors but by only the narrowest of margins, moving ahead of Stamm by just seven nautical miles and going 22 miles ahead of Peyron.
The navy pursued and destroyed one boat around 6 nautical miles (about 11 kilometers) off the coast.
In a single stroke, the commission increased California's total marine reserves from less than 8 to 140 square nautical miles by adding new no-fishing zones off of San Miguel, Santa Rosa, Santa Cruz, Anacapa and Santa Barbara Islands.