Garmin GPSMap 172C WAAS-Enabled Color Marine GPS ChartPlotter (Internal Antenna)
List Price: Brand: Garmin
Features:
* WAAS-enabled, 12-parallel-channel marine GPS navigator and chartplotter with 4.5-inch color LCD display
* Built-in worldwide basemap with coastlines, rivers, lakes, political boundaries, and more
* Compatible with BlueChart and Fishing Hot Spots data cards; TracBack mode ensures easy route retracing
* 256-color LCD screen boasts 320 x 320 resolution; 10,000-point automatic track log with 15 saved tracks
* Includes adjustable surface mount bracket; measures 6.3 x 4.9 x 2.8 inches (W x H x D); 1-year warranty
The GPSMAP 172C fixed-mount chartplotter offers brilliant sunlight-readable color LCD, robust features, and a user-friendly interface - in a compact, value-priced console.It comes standard with a built-in worldwide marine basemap and accepts MapSource BlueChart offshore marine cartography - featuring detailed depth contours, inter-tidal zones, wrecks, navaids, and many other points of interest. For small-water anglers, the GPSMAP 172C is compatible with MapSource Recreational Lakes with Fishing Hot Spots - featuring fishing areas, boat ramps, marinas, and hazards for hundreds of popular U.S. and Canadian lakes. Pre-programmed data cards can be easily inserted into the slot on the front of the unit.For added flexibility, mariners can upgrade the GPSMAP 172C to a full-fledged combination chartplotter/sounder at any time by adding a Garmin GSD 20 "black box" sonar and transducer.

total reviews 3
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90% really like, but....
GPS great....manual very explicit......easy to understand and follow.
However, Page vi of owners manual includes an optional "US A/C, PC Adapter", which is not available.
Had to purchase an additional "USB Data Card Programmer" to transfer MapSource data to the required data card.
