8 GPSMAP 4000 Series Owner’s ManualUsing ChartsUSinGChartSUsing Fishing ChartsUse the fishing chart for a detailed view of the bottom contours and depth soundings on the chart.Fishing Chart Navigation ChartThe Fishing chart uses detailed bathymetric data on a preprogrammed BlueChart g2 Vision SD card,and is best for offshore and deep-sea fishing.Enabling High Resolution Satellite ImageryYou can overlay high-resolution satellite images on the land, sea, or both portions of the Navigationchart when using a preprogrammed BlueChart g2 Vision SD card.NOTE: When enabled, the high resolution satellite images are present only at lower zoom levels. If youcannot see the high resolution images in your BlueChart g2 Vision region, either zoom in further usingthe Range (+) key, or set the detail level higher by pressing MENU and then selecting Chart Setup >Chart Appearance > Detail.To enable satellite imagery:1. While viewing the Navigation Chart, press MENU.2. Select Chart Setup > Photos.3. Select an option:Off—standard chart information is shown on the map.Land Only—standard chart information is shown on water with photos overlaying the land.Photo Map—photos overlay both the water and the land at a specified opacity. The higheryou set the percentage, the more the satellite photos will cover both land and water.•••
