"Don White" wrote

That's the way I would go. I would put the marine requirements first
(waterproof to certain standard) because it could be more likely to get
wet
on my 19' mini-cruiser sailboat.


This is important.

I use my Compaq iPaq for marine and auto navigation using Fugawi and
iGuidance. This has the advanatage of not having to buy expensive Garmin
charts - Most can be downloaded free of charge these days. And iGuidance is
a great car nav program.

But, the iPaq is not water proof. I have got it wet once, and I lost
everything that was loaded. Luckily it dried out and still works, but I had
to re-load all the programs.

BTW, the iPaq also can be used for WiFi and for music like an iPod. My iPaq
is an old unit, but I have seen a new one called a Travelmate or something
like that. But, what i would really like to find, is a waterproof
do-everything PDA or better still a waterproof Ultra Mobile PC (These still
don't seem to have caught on)