I know they have the lake insight and nautic insight models. The last one I had said "US Base Map W/O XD Card". I thought it was a nautic insight, but am now wondering if I was wrong. Could this be why it showed me on land when I was clearly on my boat in the water (sometimes not even very close to land).
Anyway I have a new one that I know has Nautic Insight. Looking forward to using it soon.
A bit of advice, call Standard Mapping and get one of their E-Cards for you favorite fishing area. At this time they are only available for the HDS units so you picked the right unit.
The card is a sat photo overlay of where you are and you have the ability to zoom WAY in. If you've ever seen theie folding maps that is exactly what you will see on your GPS, except you can zoom in... Awesome!!!
From what I understand about them, the basemap unit is the cheaper one, that you have to have a gps card for it to work right. The insight units have it built in.
I could be wrong, this is what a guy a BPS told me a while ago when they first came out and I was looking at one.
I have an older Eagle unit that will do what you are saying, show me on land when Im clearly on the water. I have go into the map settings and select the correct area I am in. I have a hotmaps card, and for me it is LA/TX I think. If I leave it set on default (Eagle map) the preloaded gps in the unit, if will only give me roads, & outlines of certain lakes/ rivers, but no contour.