Is there a way to see a 3D underwater view of the ocean/harbor floor ? This is particularly helpful in unknown harbors. I had this on a previous boat with a 2008 vintage RayMarine E120 with Navionics Platinum Plus chip.
There is no underwater 3D view. However, if you use the depth shading feature (in 2D or 3D) it will help you distinguish the bottom easily. Please be aware though that these are charted depth features, as with Navionics Platinum Plus, and are only as good as the last survey. In some areas of the world this could be many years or storms ago.