Nautical measured mile

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Admiralty Distance Poles at St Abb's Head.

A nautical measured mile is a nautical mile which is marked by two pairs of towers. A mile is measure by sailing on a given bearing and lining up the pairs of towers. The start of the mile is recorded when the first pair of towers line up and the end of the mile recorded when the second pair line up.

To accurately measure performance ships must make at least four to six runs in both directions to allow for the wind and tide.

There are several nautical measured miles around the British Isles:

See also[edit]

References[edit]

  1. ^ Tony White (March 2003). "Nautical Measured Mile Markers". Polperro village website. Retrieved 11 July 2011. 
  2. ^ Dee Kay (February 21, 2009). "Skelmorlie Measured Mile". Kintyre on Record. Retrieved 11 July 2011. 
  3. ^ a b "Measured Miles". Secret Scotland. Retrieved 11 July 2011.