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Old 05-03-2013, 07:47 PM   #2
Codger2
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City: San Diego
Vessel Name: Circuit Breaker
Vessel Model: 2021..22' Duffy Cuddy cabin
Join Date: Oct 2007
Posts: 6,691
Quote:
Originally Posted by freshalaska View Post
I have a simple Garmin GPS that I have downloaded Garmins Blue Chart or whatever they are called. It is a download and not a card. Anyway I use it in Philippine waters for navigation and many times, perhaps all the time my position as shown on the screen is off by sometimes a mile of more. At times it shows that I am piloting the boat on land, sometimes a half mile inland. I've talk to Garmin tech's about this several times, and they have no idea why it is showing an incorrect position or how to correct the inaccuracy.
Anyone with any ideas on this?
I had a similar problem a few years ago and after exhausting all the various electronic possibilities, it was found that the plotter was correct. The chart was not correctly drawn with respect to lat/lons.
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