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  2. Nautical mile - Wikipedia

    en.wikipedia.org/wiki/Nautical_mile

    A nautical mile is a unit of length used in air, marine, and space navigation, and for the definition of territorial waters. [2] [3] [4] Historically, it was defined as the meridian arc length corresponding to one minute (⁠ 1 / 60 ⁠ of a degree) of latitude at the equator, so that Earth's polar circumference is very near to 21,600 nautical miles (that is 60 minutes × 360 degrees).

  3. Mile - Wikipedia

    en.wikipedia.org/wiki/Mile

    The radar mile is a unit of time (in the same way that the light year is a unit of distance), equal to the time required for a radar pulse to travel a distance of two miles (one mile each way). Thus, the radar statute mile is 10.8 μs and the radar nautical mile is 12.4 μs. [91]

  4. Units of measurement in transportation - Wikipedia

    en.wikipedia.org/wiki/Units_of_measurement_in...

    the international statute mile ... nautical mile is rarely used to derive units of transportation quantity. ... Passenger-distance is the distance (km or miles) ...

  5. List of nautical units of measurement - Wikipedia

    en.wikipedia.org/wiki/List_of_nautical_units_of...

    Nautical mile: Length: Rhumb: Angle: The angle between two successive points of the thirty-two point compass (11 degrees 15 minutes) (rare) [1] Shackle: Length: Before 1949, 12.5 fathoms; later 15 fathoms. [2] Toise: Length: Toise was also used for measures of area and volume Twenty-foot equivalent unit or TEU: Volume: Used in connection with ...

  6. League (unit) - Wikipedia

    en.wikipedia.org/wiki/League_(unit)

    Legua nautica (nautical league): Between 1400 and 1600 the Spanish nautical league was equal to four Roman miles of 4,842 feet, making it 19,368 feet (5,903 metres or 3.1876 modern nautical miles). However, the accepted number of Spanish nautical leagues to a degree varied between 14 1/6 to 16 2/3, so in actual practice the length of a Spanish ...

  7. Geographical mile - Wikipedia

    en.wikipedia.org/wiki/Geographical_mile

    When each equatorial degree was divided into 18 leagues, the geographical mile was equal to ⁠ 1 / 54 ⁠ degree or about 2.06 kilometres (1.28 mi); when divided into 20 leagues, the geographical mile was equal to ⁠ 1 / 60 ⁠ degree, approximating the values provided above; and when divided into 25 leagues, the geographical mile was equal ...

  8. Geographical distance - Wikipedia

    en.wikipedia.org/wiki/Geographical_distance

    Geographical distance or geodetic distance is the distance measured along the surface ... = 6,371.009 kilometers = 3,958.761 statute miles = 3,440.069 nautical miles. ...

  9. Flight plan - Wikipedia

    en.wikipedia.org/wiki/Flight_plan

    Nautical mile (NM) A unit of distance used in aviation and maritime navigation, equal to approximately one minute of arc of latitude on a great circle. It is defined to be 1852 metres exactly, or approximately 1.15 statute mile. Route Forecast A format for reporting weather information. Zero-Fuel Weight (ZFW)