Nautical Mile is:
any of various units of distance used for sea and air navigation based on
the length of a minute of arc of a great circle of the earth and differing
because the earth is not a perfect sphere: as a : a British unit equal to
6080 feet (1853.2 meters) b : an international unit equal to 6076.115 feet
(1852 meters) used officially in the U.S. since July 1, 1959 
Enough said?
 

-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]
Sent: Thursday, May 25, 2000 4:39 AM
To: [EMAIL PROTECTED]
Subject: RE: MI The Empire verses the metric




>the origin of the nautical mile is as follows (I believe): 
        1 nautical mile = 1 second of 1 minute of 1 degree at the equator< 


I was taught that a nautical mile was one minute of a great circle, fixed by
the British Admiralty at 6,080 feet. Why 6,080 feet, I don't know.

Andrew Young 
Durham City 


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