depth 89detailed maps 42detour 61DGPS 92, 93, 122alarm 77differential 122, 123Digital Selective Calling. See DSCdirection display 89Display Tab 84distance and speed 89distress calls 72, 73, 74, 75, 127, 128drift 78DSC 71, 127–128DSC Tab 71Eeditroute 21, 22, 23, 60waypoints 29editing a waypoint 29emergency 127entering data 9erase track log 35exits 17external power source 2external voltagealarm 77Ffaster time 87FCC 127, 137Field 8find 17from a different location 17, 18menu 15, 19finding an item 17–19find current location 3find menu 17fishing 82fish symbols 108flasher 110following an automotive route 63forecast map 98fronts 97fuel flow 23Ggetting started 1going to a destination 13go todistress call 73point 14position report 73GPSoff/on 5options 6page 6tips 6GPS Tab 67GRI chain 125GSD 20 103GSD 20 Sounder Module 103GXM 30 Antenna 95, 100connecting 118Hheading 90highwaysavoid 87Highway Page 48, 85hiding/showing 48options menu 49page layout 49setup 49Hunt & Fish Sub Tab 82hurricanes 96Iicons 84identifier 127Information Page 19, 43initialize 3installation 117interval 37invert 50item details 19Kkeypad 7Llanguage 85, 86legs, track 37lightning 96lithium-ion battery 2local time 89location 6, 26location format 90, 126log filter 84longitude 132LORAN TD Setup 124lost satellite reception 5GPSMAP 376C Owner’s Manual 139INDEX190-00508-00_0C.indd 139 11/6/2006 9:47:50 AM