Definitions for "Sea mile"
Keywords:  nautical, mile, fathoms, approx, metres
A geographical mile. See Mile.
another name for the nautical mile.
A unit of length varying between approx. 2,014 yards, (1,842 metres) at the equator and 2,035 yards (1,861 metres) at the pole.
Keywords:  latitude, chart, minute, scale, runs
a minute of latitude and the latitude scale runs up the sides of the chart