The full-featured GPSMAP 172 chartplotter includes the same user-friendly interface as its colour counterpart, the GPSMAP 172C, but has a high-resolution monochrome display and a lower price. The GPSMAP 172 has a built-in worldwide marine basemap, 200 MHz processor for fast map redraw, and crisp, sunlight readable, 10-level grayscale display in a waterproof, space-saving console.

• Simple keypad with backlighting for easy operation
• One knob, adjustable tilt and swivel mount so you can quickly pop it in and out
• Front loading data cards for easy access

Users can enhance basemap detail on the GPSMAP 172 by simply by plugging in data cards preprogrammed with BlueChart or Fishing Hot Spots detail or downloading data from optional MapSource CDs to an optional Garmin data card. BlueChart provides exceptional offshore marine coverage that includes shaded depth contours, navaids, shoreline, and more. For inland boating and fishing, the U.S. Recreational Lakes with Fishing Hot Spots CD and preprogrammed data cards are packed with inland lake maps, profiles, marinas, fishing areas and useful outdoor resources.

For added flexibility, mariners can upgrade the GPSMAP 172 to a full-fledged combination chartplotter/sounder at any time by adding a Garmin GSD 20 "black box" sonar and transducer.

GPSMAP 172C features
• 320 x 320-pixel, high-resolution, 10-level grayscale FSTN LCD screen with adjustable CCFL backlight
• 3.2" W x 3.2" H (4.5" diagonal) viewing area
• 6.3" x 4.9 " x 2.8" (W x H x D) unit dimensions
• State-of-the-art 200 MHz processor makes map redraw, panning, and zooming virtually instantaneous
• Accepts Garmin data cards for up to 128 MB of map storage
• WAAS-enabled for accuracy to within 3 meters
• 3000 user waypoints are automatically tagged with the date and time of creation
• Stores 50 reversible routes with up to 50 waypoints each, plus MOB and TracBack modes
• 10,000 active track points and 1000 saved track points; database information can be stored on removable data cards and transferred to a PC or another unit
• Sends, receives, and displays positioning data with DSC-equipped VHF radios
• TracBackT mode helps guide you back to points along a route
• Waterproof: IEC 60529 IPX7 standards (submersible in one meter of water for up to 30 mins.)
• Provides tides and celestial information