Table of ContentsIntroduction...........................................................................iCaring for the GPSMAP 378/478 ........................................... ivWarning .................................................................................... vCaution .................................................................................... viGetting Started.....................................................................1Unit Overview .......................................................................... 1Charging the GPSMAP 378/478 .............................................. 2Turning On the GPSMAP 378/478 .......................................... 3Getting Satellite Signals ......................................................... 4Using the GPSMAP 378/478 Keypad ..................................... 7Using the GPSMAP 378/478 ................................................... 8Simulator Mode ..................................................................... 12Basic Operation In Marine Mode ......................................13Marine Mode Page Sequence ............................................... 13Navigating in Marine Mode ................................................... 14Finding an Item ...................................................................... 17Creating and Using Routes .................................................. 20Creating and Using Waypoints ............................................ 25Managing Your Tracks .......................................................... 36Following a Marine Route ..................................................... 40Marine Mode Pages and Features ...................................42Map Page ................................................................................ 42Compass Page ....................................................................... 48Highway Page ........................................................................ 51Active Route Page ................................................................. 53Position Data Page ................................................................ 54XM Audio Page ...................................................................... 55Basic Operation In Automotive Mode ..............................59Automotive Mode Page Sequence ....................................... 59Navigating in Automotive Mode ........................................... 60Editing Your Route ................................................................ 63Following an Automotive Route........................................... 65Automotive Mode Pages and Features ...........................66Map Page ................................................................................ 66Current Route Page ............................................................... 67Trip Computer Page .............................................................. 68Main Menu ..........................................................................69GPS Tab .................................................................................. 69Weather Tab ........................................................................... 70XM Tab .................................................................................... 70Route Tab ............................................................................... 71ii GPSMAP 378/478 Owner’s ManualINTRODUCTION > TABLE OF CONTENTS