We have a Toshiba Tecra, and have had no problems. I made sure that
the port hole above the nav station was extra tight, so that ZERO water
would be able to come in and drip down.


I also have a couple of DVD players and an LCD monitor on the wall and
they say they are happy too.

I was on a Beneteau 50, and they had a full blown Desktop with CRT
monitor. They had had it for years without any problem.

I think the chalenges would be if you wanted to take the computer out
in the companion way where it would be more exposed to everything.

This Christmas Best Buy started selling some really striped down
laptops for $400. You might consider if they would work for you. If
all you want to do is check email, surf the web and perhaps plot a
course you don't need the latest and greates.