Nautical mile 1 sea mile", followed by "For most practical purposes distance is measured from the latitude scale, assuming that one minute of latitude equals one nautical mile". One tenth of a nautical mile is a cable length. The derived unit of speed is the knot, defined as one nautical mile per hour. The metre was originally defined as of the meridian arc from the North pole to the equator passing through Dunkirk. The Earth’s circumference is therefore approximately 40,000 km. The equatorial circumference is slightly longer than the polar circumference – the measurement based on this (40,075.017 km x x =
Wellesley Nautical School Wellesley Nautical School The Wellesley Nautical School was a naval training school first located on the Tyne, and later removed to Blyth The Wellesley Nautical School was founded in 1868 by a group of philanthropic businessmen on Tyneside under the leadership of James Hall, 'to provide shelter for Tyneside waifs and train young men for service in both Royal and Merchant Navies.' The first accommodation was on board a Bombay built 74-gun third rate ship of the line HMS "Cornwall", which had been launched as HMS "Wellesley". This ship was repossessed and replaced circa 1874 by the hulked third rate,