Most units are water-resistant and can withstand a certain amount of water sprayed on them without damage. Some offer internal antennas for easier mounting options and others offer external antennas for clearer antenna line of sight to the satellites. Chartplotters The majority of the fixed-mount GPS we offer have plotting capabilities. These chartplotters are as simple to operate as handhelds and feature built-in base maps usually of North and South America. With these units you can mark waypoints and plan routes.
Cartographic cartridges help to complement and personalize the included basemap.
There are also cartridges available with databases of navigation markers, depth contours, and more. Our chartplotters are sized for easy installation and many are differential ready for improved accuracy. We also carry several hand-held GPS which are great on, and especially off the water. These units contain specialized databases of North and South American roadways and general landmarks. Many basemaps include state and country boundaries, lakes, rivers, streams, airports, cities, towns, coastlines, and U.S. state, and interstate highways.