GPSMAP 3006C Features: WAAS-enabled, 12 parallel channel GPS sensor with 30 ft. cable length High-speed RISC processor and graphics controller for
GARMIN GPSMAP 3006C GPS CHARTPLOTTER FOR MARINE NETWORK
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12-channel GPS unit with 16 MB marine base map Built-in database of US marine navaids including fixed navaids, buoys, obstructions, wrecks, and
Magellan Meridian Marine Waterproof Hiking GPS
GARMIN GPS 152 Marine GPS Navigator In perfect working condition with warranty. Including the power cable and user manual. 011-00685-02
GARMIN GPS 152 Marine GPS Marine Navigator Chartplotter 011-00685-02
Matsutec Gp-280 Handheld Gps Navigator/marine Gps Locator Handheld High-sensitivity Gps Receiver/various Voyage Screens (orange) - Marine Gps - AliExpress
Simrad type GPS marine navigation system — Visual Media Design
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Typical Marine GPS Receivers Sources: Garmin®, Humminbird® and Koden®