There are two types of Electronic charts: raster navigational charts (RNC) and Electronic navigational charts (ENC).
But they do not look like traditional ch.
ENCs (also called vector charts), on the other hand, include much more information than an RNC; they allow user-selected display options that enhance safety and efficiency; and they are easier to keep up to date.
RNCs are exact copies of paper charts and their use underway comes naturally to navigators accustomed to paper charts.
There are two types of Electronic charts: raster navigational charts (RNC) and Electronic navigational charts (ENC)