Chart

A geographical plotting of a region. A chart is a working document that is periodically updated by cartographers and mariners with new information. It is also a generic term for certain kinds of map, such as a portolan chart or a nautical (sea) chart.

An open spread of a book, showing a sea chart of the English Channel. The outline of the coasts are finely drawn, and are coloured in red (England) and yellow (France), however the sea and land are uncoloured. Details on the map such as the cartouche are hand coloured. The chart shows crisscrossing lines called rhumb lines.