You can get email at sea via hf radio free if you have a amateur radio licence. There are two systems -
http://www.winlink.org/ which needs an expensive modem, and pskmail which just needs a laptop with soundcard.
Ordinary car batteries don't do well if you deep discharge them, so I's agree with everything that's been said about marine/leisure batteries being preferable. But for emergency use, it's reasonable to use what you have.
My amateur station is battery powered - I have a small solar panel that keeps the spare battery topped up. Wind is a good bet and I did look at the Rutland windcharger but they are pretty expensive. I remember seeing a homemade windcharger that was based on a dynamo bike wheel.
Wicca, what's your setup for internet access on the boat? Or do you just use internet cafes when ashore?
Hiya Dogwood,
I spend usually 10 to 12 weeks of the worst part of the winter, wherever I happen to be, in a marina. I'm nearly 66 now and too old to ride out the December gales in some desolate anchorage while all the youngsters are tucked away in marinas. so I join 'em..
.
I've got a laptop and most marinas sell an Internet connection facility. This one is 30 Euros unlimited useage per month, so I sign up for the time I'm here. Once I get to sea I have no internet access and use Internet cafes when I call into harbours briefly for water and stores.[/QUOTE]