Dave, thanks for this info. I don't currently have any
computerized navigation and this may be a good way to get
started without sinking a lot o' bucks into something I'll
end up not liking.

Fresh Breezes- Doug King

Dave wrote:
Well, I finally got my el cheapo nav system up and running properly. Works
like a charm. It consists of an ancient Toshiba Libretto I had sitting
around the house, hooked up to a Garmin GPS via the serial port, and running
the totally free SeaClear II software (brevity snip)