v GPSMAP 640 Owner’s ManualTable of ContentsMarine Mode: Using the Dashboard ................................25Using the Compass Screen ....................................................... 25Using the Numbers Screen ........................................................ 26Using the Trip Screen ................................................................ 26Marine Mode: Viewing Almanac Data ..............................27Viewing Tide Station Information ............................................... 27Viewing Current Information ...................................................... 27Viewing Celestial Information ..................................................... 28Marine Mode: Managing User Data ..................................29Transferring Marine Data (Waypoints, Routes, Tracks) to or froman SD Card .............................................................................. 29Backing up Marine Data to a PC................................................ 29Copying or Merging MapSource ® Marine Data to theGPSMAP 640 .......................................................................... 30Marine Mode: Managing Information FromOther Vessels .....................................................................31Viewing AIS Information ............................................................. 31Viewing DSC Information ........................................................... 31Marine Mode: Advanced Configuration ...........................33Configuring System Settings...................................................... 33Changing Units of Measure ....................................................... 34Configuring Communications Settings ....................................... 35Configuring Alarm Settings ........................................................ 36Configuring My Boat .................................................................. 37Configuring Other Vessels ......................................................... 37Configuring Navigation Settings................................................. 38Configuring XM Radio ................................................................ 38Configuring Navigation Chart Options ....................................... 39Configuring Perspective 3D Options and Mariner’s Eye 3DOptions .................................................................................... 43Fish Eye 3D Settings ................................................................. 44Fishing Chart Settings................................................................ 44Configuring the Active Track Options ......................................... 45Configuring the Numbers Screen............................................... 46Marine Mode: Using XM WX Weather and Audio............47Using XM WX Weather .............................................................. 47Setting the XM WX Weather Options ......................................... 47Viewing Precipitation Information ............................................... 47Viewing Forecast Information .................................................... 49Viewing Sea Conditions ............................................................. 50Viewing Fishing Information ....................................................... 51Viewing Visibility Information...................................................... 52Viewing Buoy Reports ................................................................ 52Using XM Audio ......................................................................... 53Automotive Mode: Getting Started ..................................54Step 1: Mount Your GPSMAP 640 ............................................. 54Step 2: Configure Your GPSMAP 640 ....................................... 54Step 3: Acquire Satellites ........................................................... 54Step 4: Use Your GPSMAP 640................................................. 54Finding Your Destination ............................................................ 55Adding a Stop ............................................................................ 55