Originally Posted by MarkofSeaLife
Or a blind confidence in paper.
I guess you miss what I have said. I was talking about the position of the boat on the chart that appears on the plotter and that can be wrong. On a paper chart is you that have to put your boat where it is regarding the chart and you have also your eyes
to do that, I mean regarding reality. If you miss that it is you that are missing not an electronic device.