I am thinking of getting a tablet for various uses, among them to run Navionics as back up plotter on the boat. I have a cockpit mounted Standard Horizon plotter which is good, but it would be nice to have something portable for use below, at home etc.
Am I right to think that for this to work, the tablet will have to have 3G connectivity as well as the standard wi-fi? Or, once I have downloaded the software via the wifi connection, is the tablet's own GPS engine enough to drive it? Current use will be E Coast and maybe S Coast coastal, plus a little cross -channel. I am very wary of roaming charges . . . .