- a unit of distance used chiefly in navigation, equal to 6080.20 feet (1853.25 meters) in the United States, now replaced by the international nautical mile.
- a unit of length, used esp in navigation, equivalent to the average length of a minute of latitude, and corresponding to a latitude of 45°, i.e. 1852 m (6076.12 ft)
- a former British unit of length equal to 1853.18 m (6080 ft), which was replaced by the international nautical mile in 1970
