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How do you get the gps to show depth and markers on the water?

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It depends on what model you have. Most chartplotters require a chip with regional chart data. Most Lowrance models use Navionics charts. If you have a chip in the GPS, go to the map screen and press the "menu" key. Somewhere in the map setup menu will be a field where you can specify which chart to display.

For example a Navionics gold chart may cover the entire east coast, but it is broken down into a few sub regions. If you are boating in New England you would select the sub region labeled Northeast. Some of the earlier models didn't name the regions, they used model number for each region such as "XL904G". In that case your best bet is to try each one until you can view the charts in your area. Zoom in to 1/2 mile scale to make sure you can see charts.

If you have done all that and still can't see the chart details, there is also a setting in the map setup menu that allows you to set the level of detail. Make sure it is set to normal, more, or most. If you see a declutter setting on the setup menu, try setting it to off.

Posted on Jul 21, 2008

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