Is the statement "NGA's Digital Nautical Chart (DNC) are vector based" true or false?

The statement is true because the National Geospatial-Intelligence Agency’s Digital Nautical Charts (DNC) are indeed vector-based. Vector graphics use mathematical expressions to describe shapes and lines, which allows for greater flexibility and scalability without loss of quality. This is particularly important in nautical charts, as they need to maintain accuracy and clarity for various zoom levels and printer formats. Vector-based charts enable mariners to better visualize geographic features, navigational aids, depths, and maritime routes with precise information.

In contrast, raster graphics pixelate when scaled, potentially losing detail. Therefore, understanding that DNC is vector-based indicates that the charts are designed for efficient processing, reliability in navigation, and adaptability for different applications, making them an essential tool for safe sea navigation.