Does anyone know why when I plot a coordinate or go to a waypoint. My Simrad EVO3 plots me across land and not navigational waters? This really comes into play inshore and around the FL Keys. We navigate back from offshore to rental homes we rent most of which are in the many canals and the plot line shows me across land (or the shortest distance). This makes it difficult since the canals are many and small. Thanks in advance for any help.