Thanks Molar,
It would be interesting to see if the Garmin updates include the Kennebec River above Merrymeeting Bay. Not a lot of room on the console of the 186 so Garmin was my first choice for a plotter/FF combo but without coverage to my slip it would be useless in unexpected inclement weather up here.
On their return to breaking the ice up here 1999 the captain of the USCG Thunder Bay said his charts had last been updated in 1965. Wonder if they're on the Garmin e-mail list?
Dick