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 tourism Supplying the equipment and accessories for those activities has spawned businesses for those purposes. With many nautical enthusiasts living on board their vessels even in port, nautical tourists bring demand for a variety of goods and services. Marinas developed especially for nautical tourists have been built in Europe, South America and Australia. Tourist services available at marinas catering to nautical tourists include: Among the more interesting locations frequented by nautical tourists, Greek islands and the Croatian coast offers services at more than 50 ports, touting it as Mediterranean as it once was. Croatia's Greece's efforts have been so successful they