So here's another 2 cents. My Garmin chartplotter has not yet lost a GPS signal. My smartphones (Androids all) do, when the clouds get real thick. Such is the value of the antenna. I was extremely thankful for the chartplotter going into Woods Hole in pea soup.
That said, the charts on my phones are raster images of real charts and the charts on the Garmin are inferior, with level of detail dependent on zoom level. At least with the raster charts I can see a speck and know I should zoom in. The speck just ain't there on the Garmin. Such is the value of charts at the maximum level of detail, plus it's easy and cheap to keep 'em up to date. Also have the latest raster charts on a pc with a separate gps antenna, but it's down below. Much bigger screen, if I need it. And then, when the charts are wrong, having them is worse than not having them, 'cause you tend to trust them. This led to some Caribbean style (color of the water) navigation in high wind in Nantucket sound. Could'a used some local knowledge. My druthers is to have 'em both - plotter and raster charts on a smart device. Speaking of local knowledge, I also have the Active Captain charts and database on the computer. Very helpful, and getting more so. What I don't have anymore, fool that I am, is paper charts. But that's another topic. 2 cents worth. Boy, words are cheap. Dan SheerPegathy - LF38Rock Creek off the Patapsco
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