These are terrific units for small to medium size boats. There may be a spot or two on the map that are not "ground truthed" yet but 99.9% of the time these amazing pieces of modern technology are dead on. Driving the boat from 3 miles off Sekiu right into the mouth of the Coho resort boat basin in "zero-vis" fog and dark conditions is a snap... been there, done that, had my doubts, but will never again question my 425 and Navionics chip.

Drop me a note if you decide to part with the CA chip separately.