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 =
Nautical Archaeology Society part of the British Archaeological Awards. In 2008 the administration of the award was transferred to the Nautical Archaeological Society, and the award will be presented at the 2009 conference. It is awarded for the best published work covering maritime, nautical or underwater archaeology which best reflects the pioneering ideas and scholarly standards of Keith Muckelroy. In 2004 the Nautical Archaeological Society took custody of the remains of an Elizabethan wreck discovered in the Princes Channel of the Thames Estuary during dredging operations by the Port of London Authority. The remains represented a navigation hazard, and as they had been