PDA with GPS & Marine mapping?

Hi all,

I don't know much about PDA's and my boyfriend wants one for xmas.

His requirements are:
Must have GPS - he intends to use this on his boat (and car) I presume you can buy marine mapping software etc - this does not need to come with the PDA as he can buy these himself at a later date (I'm also assuming this would bump the price of the PDA up if I bought them already installed?)

Wireless/wifi access - but not a phone, as he's not allowed to have mobile switched on at work for security reasons.

Comes with/or available seperately waterproof case (for use on boat)

He'd like all the usual software etc, and I'd like to get him a good name brand one (I had a pda solely for satnav, when I had a problem with it, it was really hard to fix and difficult to get advice from forums etc - it was a Medion - in the end I swapped it for a tomtom).

Anyway, I'd greatly appreciate any advice, I don't really know where to start researching the best one! My budget it maximum £200 - thats really pushing it tho!

[getsurfers]

The only ones I know of that do marine and road in the same unit would be Garmin GPSMap range.

You should be able to get a GPSMap for around £200 with colour display, air/land/marine modes. Check www.garmin.com for product details and to find an approved UK dealer.

However, don't expect the road mapping to be as good as a TomTom would be. But that's the price you pay for wanting marine and road in one unit.

If marine use is occasional, then far better to get a TomTom for road, and a Garmin for the water. Granted you'd be spending £250-300, but you'll get dedicated GPS units which do the job well in their own environments.