GPSMAP 5000 Series Owner’s ManualUsing ChartsUSinGChartSoverlay Numbers—controls how charting numbers appear on the screen. Choose to show or hidethe numbers by category. When set to Auto, the overlay numbers appear only when that category isactive.Cruising: GPS position, GPS heading, GPS speed, and depth. Depth is only available ifconnected to a sonar unit (page 49).Navigation: GPS position, Distance to destination, arrival (time), bearing (to destination), GPSheading, and GPS speed. These numbers appear only when navigating to a destination (page 21).Fishing: GPS position, depth, water temperature, and water speed. Depth, temperature, and speedare only available when connected to a sonar unit (page 49).Sailing: GPS position, waypoint velocity made good (VMG), wind speed, wind direction, waterspeed, and depth. Wind speed and direction are only available when connected to a NMEA 0183wind sensor. Water speed and depth are only available when connected to a sonar unit. If youhave a wind sensor, setting the sailing overlay numbers to Auto places an indicator around theboat icon on the Navigation chart to represent wind speed and direction.Chart Setup—customizes the Navigation chart. See page 13.Understanding Chart DataBlueChart g2 and BlueChart g2 Vision charts use graphic symbols to denote map features. Somecommon symbols you might see include, but are not limited to, the following:*Dangerous Rock Exposed Rock BeaconPilot Boarding Area Airport/Seaplane Base BuoyAnchorage Berth Precautionary Area ChurchAnchoring Prohibited Radio Report PointExposed Wreck Recommended AnchorageFishing Harbor Rescue StationFishing Prohibited Tide StationInformation Yacht HarborCurrent Station Marine Services*Some symbols might appear differently on your Garmin unit.Other features common to most charts include depth contour lines (with deep water represented inwhite), intertidal zones, spot soundings (as depicted on the original paper chart), navigational aidsand symbols, and obstructions and cable areas.Zooming In and Out on the MapThe and keys control the zoom level, indicated by the scale at the bottom of the Navigationchart ( ). The bar under the number represents that distance on the map.Navigating to a Point on the chart1. From the Home screen, touch Charts.2. Touch Navigation Chart, Fishing Chart, or Radar Overlay.3. Touch the point on the chart where you want to go.4. Touch Navigate To.••••