The GPSMAP 188/188C Sounder install easily in open cockpit
and overhead boxes, and feature a quick map redraw using
a high-speed RISC processor. These units combine chartplotter
and sounder capabilities in one unit, with split-screen
capability so you can view your position and sounder information
at the same time. For the GPSMAP 188 Sounder, detailed marine
cartography is presented on a high-resolution (240 x 360
pixels), 10-level grayscale, liquid crystal display. For
the GPSMAP 188C Sounder, the display is a high-resolution
(234 x 320 pixels), 16-color TFT display.
Featuring a built-in worldwide basemap, the GPSMAP 188/188C
Sounder is fully compatible with Garmin's new BlueChart®
marine cartography and many MapSource®
CD-ROM products, including Fishing
Hot Spots. These units are designed to provide precise
GPS positioning using correction data obtained from the
Wide Area Augmentation System (WAAS).
They also provide position accuracy to less than three meters
when receiving WAAS corrections. The GPSMAP 188/188C Sounder
also accept RTCM-104 differential corrections.
The GPSMAP 188C Sounder offers daylight-viewable color
as an option to the monochrome display of the GPSMAP 188
Sounder.
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