Does anyone recommend a solution that allows reading digital charts on
my TiBook with Mac OS X 10.2.8, plotting courses, and then sending the
routes to my Garmin 182C?

I own the power/data cable and a keyspan 19QW USB to serial port
connector which looks to fit.

The GPSY Pro software does not list the 182C as a compatable unit.

The folks at James Associates, makers of Map GPS Pro were unable to
recommend to me an afforable source of digital nautical charts
compatible with Macs and their software (Tiff, Jpeg, pdf).

I am hoping to take advantage of the bigger screen on my laptop and
ease of using a mouse to facilitate course plotting.
TIA,
harlan

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Tro respond, obviously drop the nospam!