Andy K. wrote:

snip

I would proceed with caution using any of the "superior" Garmin charts. Just
in our local waters we have found several errors that will cost you dearly
if you don't test the waters before you trust their charts.


Were the errors unique to the Garmin chart chip or was the same error
found on a USGS or NOAA paper chart?

I think all the companies making chart chips for U.S. waters start with
the same data (from USGS or NOAA sources) and then they make vector or
raster charts based on that data. So if you find errors on a chart chip
and can look at the chart it was based on, you may see the error there too.

Jack

--
Jack Erbes in Ellsworth, Maine, USA - jacker at midmaine dot com