This is one of the finest plotters you can buy at an all time exceptionally low price!

The NAVIS 640 plotter kit come complete with everything you need to install and operate the unit.  The GPS/WAAS receiver will  lock-on to 12 satellites with multiple tracking  utilizing a  receiving sensitivity of  less than 130 dBm. In short, it locks on and stays locked on to your position even in adverse weather conditions.  Pre loaded, detailed charts covers from Savannah, GA to New Orleans, LA; the Bahamas and the Caribbean. Everything is installed, no set up required, hook up your antenna, mount the head unit and turn it on to start enjoying this state of the art plotter.