GPSMAP 182/182C Owner’s Manual 115INDEXINDEXSymbols2D Differential 422D GPS Location 89, 1013D Differential 423D GPS Location 101AAccessories 110Accuracy 40Accuracy Alarm 76Accuracy Circle 68Active Route Page 37Options 38AlarmsAccuracy 76Anchor Drag 76Arrival 77Battery 76Clock 76DGPS 76DSC 25Fish 77Off Course 77Shallow/Deep Water 77Temperature 77Alarm Tab 76Anchor Drag Alarm 76Arrival Alarm 77BBackLight 4Base Map 65Battery Alarm 76Bearing Line 67Bottom Split 81CCard Tab 62Celestial Tab 47Cleaning ivClock Alarm 76Color Mode 65Communication Tab 72Correction Signals 102Course Line 67Course Up 64DData Cards 100Data Entry 6Data FieldsChange Numbers 31Show 31Split Fields 35Date/Time 101Daylight Saving Time 63DeleteDSC Directory Item 24Depth Line 82DGPS 102Alarm 76Differential GPS 102Dilution of Precision 104Distance 60Distress Calls 22, 22–25DOP 104DSC 22Call List 24Directory 24Log 24Setting Up 25DSC Tab 62EEditRoute 56Waypoint 11Enter/Mark Key 5, 8FFCC Compliance 113Features 5Find 19Additional Information 21Find Key 5, 19Fish Alarm 77Flasher 86GGain 81Garmin Data Transfer 72Go To 13Distress Call 25Position Report 25GPS Tab 40Options 43GSD 20 78HHeading Line 67Highway Page 35Options 36Setup 37Highway Tab 68IInitializing 1Installation 93Interface Keys 5Interfacing 99In Zoom Key 5KKeel Offset 87Keypad Usage 5Key Beeps 69