200w is an auto gps
and regardless of the map you put into it, it will still be an auto gps. It will not allow you to store routes, follow "bread crumbs" back home, etc.
Handy, yes. replace a marine gps, not really.
If you want something that will give you the visual help to spot things on your chart, it is a really good thing. (Yesterday, we went out from Alton, ended up going in past Clay Point and the Bahre estate, and darned if I could spot the black buoy beyond the ones off of Barndoor. And the gps was at home. I had the chart, but couldn't see it. Sooooooo, it was slow down, and then there it was. If I had the GPS with me, I think I would have spotted it a lot faster.) I noticed the Garmin map didn't show the markers just off Back Bay in Alton (out from the bridge on Rt 11). I may have to reinstall the Bizer map.
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