Portable SatNav on the Sea?

[KevD]

I am currently using a PDA with a bluetooth GPS Nav System as an In Car SatNav.
What I would like to know is, if with the right software, can this be adapted to become a GPS system that can be used on a boat?
If so any know of any software.
Cheers in advance for any help you can give.:smashin:
Kevin

[bibamus]

You could try Iplotter, info is at the following link
http://www.btinternet.com/~navtech/iplotter.htm
Not sure how many charts it includes, and I think it only works on Pocket PC, but worth a look?
allan

[crocodile]

Have a look here (http://www.pocketgps.co.uk/outdoor-navigator-marine.php).