On Sun, 13 Jul 2008 02:40:19 +0000, Larry wrote:

http://earthnc.com/

Nautical Charts of the whole continent plus a lot more....uses Google Earth
coupled to your GPS data.....$50!

Take a look at the video....

The days of the $2000 proprietary chart plotter ripoff is ending...

...right on your laptop or handheld tablet.

Can it be used without an internet connection?

If not, then it's not quite ready for chart plotter replacement duty,
not by a long shot.