Chartplotter Datum question

Live2Dive

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Apr 28, 2004
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I have a new (last summer) Lowrance 7600 HD chartplotter, that generally, I have been very pleased with. It has worked perfectly.
This past week I was in Bimini and it was telling me I was on land (South Bimini) as I was going up the channel to Big Game Marina. Back in Ft. Lauderdale it was dead on. Is this a datum issue? It is set to wgs84 (default). Or, is this just bad original chart data from the Bahamas. I've heard that the original surveys there are a little "casual" The plotter was telling me I was about 300-400 yards East of my actual position. Although watching boats go aground in the channel is a full time activity..Thanks for the help.
 
I'd bet it's a datum problem. Check the cartrige for the datum being used. Is it a separate cartridge?
 
you should have a "chart info" button or menu selection that will tell you the datum of the chart that is loaded.
 
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