See Reply #39 from Cruisers Forum
http://www.cruisersforum.com/forums/f13/ipad-case-and-mount-options-161563-3.html (http://www.cruisersforum.com/forums/f13/ipad-case-and-mount-options-161563-3.html)
That thread has a spirited discussion of navigational equipment that is a fun read, too, if you start at the first page.
I've been using a laptop with a Bluetooth wireless GPS receiver running Opencpn for chartplotting.
Recently, my eldest son has passed down his iPad which doesn't have a built in GPS but also works well the same Bluetooth GPS receiver.
I would like to fool around with iPad in the cockpit this summer and was wondering what the other folks here preference is for nav software/charts.
I use the app iNavX. Charts are NOAA raster for US. Outside US, I use NV charts. Lots of discussion on pros/cons of iPad vs. chart plotter. I am a strong advocate for the iPad due to ease of use and portability....for planning, and use on other boats. However, my chart plotter remains available just in case!