Chinese English

A ROUTEING SYSTEM adopted by the INTERNATIONAL MARITIME ORGANIZATION, in accordance with the requirements of regulation V/10 of the 1974 SOLAS convention, for mandatory use by all ships, certain categories of ships or ships carrying certain cargoes.

A representation (usually on a flat medium) of all or a portion of the EARTH or other CELESTIAL BODY, showing the relative size and position of features to some given SCALE or PROJECTION; also, a representation of all or part of the CELESTIAL SPHERE. A map may emphasize, generalize, or omit the representation of certain features to satisfy specific requirements. Maps are frequently categorized and referred to according to the type of information which they are primarily desi­gned to convey, to distinguish them from maps of other types.

A MAP specially printed in two comple­mentary colours in such a way that, when viewed throu­gh a twin EYEPIECE of the same colours, a three-dimen­sional impression of RELIEF is seen.

A MAP showing certain fundamental informa­tion, used as a base upon which additional data of specialized nature are compiled. Also, a MAP contai­ning all the informa­tion from which MAPS showing specialized information can be prepared; a source map.

A MAP showing the BOUNDARIES of subdi­vision of LAND, usually with the BEARINGS and lengths thereof and the area of individual tracts, for purpo­ses of describing and recording ownership. A cadastral map may also show culture, drainage, and other fea­tures relating to the value and use of LAND. See also PLAT.