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 =
The Nautical Magazine The Nautical Magazine The Nautical Magazine is a monthly magazine containing articles of general interest to seafarers. It was published by Brown Son & Ferguson until 2012, when it was acquired by "Sea Breezes". The magazine was first published in 1832 and has variously been known as "The Nautical magazine and naval chronicle for ..." and "Nautical magazine and journal of the Royal Naval Reserve". It has a bias towards the merchant navy and is aimed at the professional seafarer rather than deckhands. The magazine's authors have included: The editors were as follows: Under Becher's editorship, the magazine documented a