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On what is the length of a nautical mile based?

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On what is the length of a nautical mile based?
posted Jul 14, 2020 by Ujjwal Mehra

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The circumference of the Earth north to south
A nautical mile, used for marine measurements and air travel, is equal to one minute (1/60) of the 180 degrees of latitude, i.e. 60 x 180 in total one pole to the other. One nautical mile = 1.1508 US land measured miles.

answer Jul 15, 2020 by Varuna Magar
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