A chart is a hydrographical or marine map, that is a draught or projection of some part of the earth's surface, with the coasts, islands, rocks, banks, channels, or entrances into harbours, rivers, and bays, the points of compass soundings, or depth of water, etc, to regulate the courses of ships in their voyages. The term chart is applied to a marine map; the term map is applied to a draught of some portion of land (often including sea also). A plane chart is one in which the meridians are supposed parallel to each other, the parallels of latitude at equal distances, and of course the degrees of latitude and longitude everywhere equal to each other. Research Chart
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Matt and Leela Probert
Abbreviations
General Information
Research Chart
