Garmin GPSMAP 78s Handheld Navigator
This hand-held unit from Garmin is pre-loaded with a whole range of coastal charts and comes with a three-axis compass for charting your precise direction, barometric altimeter, full-color 2.6-inch screen and micro SD card slot for loading external charts and maps.
The 78sc comes pre-loaded Bluechart g2 coastal charts that display imagery reading shorelines, harbors, marinas, depth contours, and more throughout the United States and the Bahamas. Share waypoints, routes, tracks and any location from the unit wirelessly to other compatible devices with just the touch of a button. You can even it give out the information via Twitter and Facebook.
Adding maps to the unit is simple through the microSD card slot and you can even get updated terrain and location infomation via satellite imagery. This is a great unit for taking on the road after you've docked in an unfamiliar part of town.