Check out http://rosepointnav.com/ for an easy to use, full-featured,
and low-cost navigation system that takes advantage of the S-57 ENC
format charts.

We just stopped offering the $10 pre-release version because the real
product is about to ship, but if you go to
http://rosepointnav.com/payPalStart.htm and order one, we'll still
send it to you.

The pre-release we'll send you is no longer fully functional in that
it will not respond to a GPS, however once it's installed you can
download the latest update which will continue to work with a GPS
untile September 1st.

Thanks,
Brad Christian
Rose Point Navigation Systems, LLC
http://rosepointnav.com/