MapSource Compatibility Garmin Recommends: Select MapSource Product BlueChart Data Cards (Pre-programmed) Lake Murray- download Lake Winnipesaukee, Download BlueChart BlueChart BlueChart BlueChart Inland Lakes LakeMaster Dakotas LakeMaster Iowa-Illinois LakeMaster Michigan LakeMaster Minnesota LakeMaster Wisconsin Topo US 2008 Trip and Waypoint Manager US TOPO 24K, National Parks, Central US TOPO 24K, National Parks, East US TOPO 24K, National Parks, West WorldMap MetroGuide Australia* MetroGuide Canada* MetroGuide Europe* MetroGuide North America (formerly MetroGuide USA)* TOPO Canada* TOPO Great Britain* * denotes limitations

Garmin Grand Giveaway Win with Garmin sonar and walk away with $1,000!

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We know you don't have extra space on your boat, so we packed a ton of features into this combination chartplotter/sounder unit. The GPSMAP 238 is a dual-frequency sounder that features exceptional resolution, a fast redraw rate, and split-screen capability so you can view your position and sounder information at the same time. This unit is WAAS capable for greater accuracy, and it has a built-in worldwide basemap with coastline detail, U.S. tide data, and inland features. The GPSMAP 238 also accepts optional data cards with Garmin's BlueChart® marine cartography for additional detail, and is fully compatible with many of our MapSource® CD-ROM products.