Different Kinds Of Nautical Charts

Raster navigational charts ( rncs) and electronic navigational charts ( encs) otherwise known as vector charts. World or general charts, offshore charts, approach charts, and harbour charts. Many coastal charts will also show harbor plans as inserts.

Many prefer the look of raster charts,. Recent technologies have made available paper charts which are printed on demand with. Originally designed for large commercial vessels using a sophisticated navigational computer called an electronic chart display and information system (ecdis), encs are now also being used on simpler electronic chart systems and chart plotters on many types of ships.

Almost all marine charts are drawn using the mercator projection.

These names also hint at the chart scale's intended purpose. Definitions a nautical chart represents part of the spherical earth on a plane surface. Charts are often categorized into the following six groups by scale (from largest to smallest scale), berthing, harbor, approach, coastal, general, and sailing charts. Mercator projections allow the navigator to take magnetic bearings from and plot bearings directly on to the chart.