OK, I took the boat to the lake for the first time to try out the 899. I installed the Navionics + SD card and was getting a mapping program, but I think it is the preloaded Lakemaster program that comes with the unit that I was seeing on "Chart mode". At least the icons of the boat and colors look exactly like the Humminbird owners manual shows the pictures of the charts. How can I tell if my unit is using Navionics + ????


Thanks for the info on changing meters to feet Shellback....