[charliemagee]

Thanks for responding so quickly!

I think I have a basic misunderstanding of what iNavX is.

I have a Tridata ST50, a Garmin GPSMAP 215, and an Autohelm ST2000. All of which are pretty old, as far as electronics goes these days.

The Garmin is really slow to find satellites and the charts that are on it are really primitive.

I had thought that with iNavX and my iPhone 3GS and some cables, I'd be able to drop the Garmin out the system without having to put up much bigger bucks for a newer Garmin chartplotter.

So I need MacEnc and my laptop on the boat for the solution I'm envisioning? I take it that iNavX is a mini-standalone chartplotter?

Thanks again,

Charlie Magee