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GPS Sounders
 GPSMAP 556s5" diagonal screen, 480 x 640 pixel display, preloaded coastal maps for the U.K. or Australia, NMEA 2000 capable, high-sensitivity GPS receiver, with built in sounder module |
 GA 30 GPS antennaGarmin GA 30 remote GPS antenna |
 GPSMAP® 451s4" diagonal screen, preloaded coastal maps for the U.K. or Australia, NMEA 2000 capable, high-sensitivity GPS receiver, with built in sounder |
 GPSMAP® 551s5-inch diagonal screen, 234 x 320 pixel display, preloaded coastal maps for the U.K., NMEA 2000, high-sensitivity GPS receiver, with built in sounder |
