This summer in late August I was cruising up the Tred
Avon river in a light fog with a good 75 yards
visibility and light winds.

There is a marker that sits right on a Longitude line
on the chart.

I was running down the same longitude line and was
planing to turn at the mark.

I saw the dreaded shore first and finally found the
the marker 100 yards off the longitude line.  The land
was actually on the longitude line as displayed by the
GPS.

The chart is 3 yrs old.  Would anyone know what might
have been going on?  Could the GPS be that far off? 
The day before it seemed ok.

The trip a few weeks earlier it was dead on.

Thanks

Doug Kelch

"Seas the Day" 

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