Code Blue - you forgot to add ...
Elsewhere in the British Isles, longer miles were used, including the Irish mile of 6,720 feet and the Scottish mile of 5,940 feet.
A nautical mile is the length on the Earth's surface of one minute of arc, or, by international definition, 1,852 m (6,076.12 feet; 1.1508 statute miles). The measure remains in universal use in both marine and air transportation. The knot is one nautical mile per hour.
Thanks to Britannica.com !!