A 3-D Nautical GIS is suggested in this paper. The system is aimed at nautical navigation and simplifies navigation by adding three major features to existing chart systems: The egocentric view, by allowing the geographical data to be viewed from an bridge perspective the problem of mental rotations is removed; the seaways, displaying traffic separated fairways and individual track lines and the NoGo area polygons displaying warning areas for waters too shallow for the individual ship in the current tidal situation.