Powering devices on a sailboat

Hey Bran,
To quickly get a sense of what sized components you'll need I'd recommend using our off-grid sizing calculator (for solar):

http://www.altestore.com/howto/Calculators/c36/

The challenge will be to estimate the sun-hours since you'll presumably be in a moving craft. So you'll have to decide upon a location (and it's associated sun-hours).

For wind turbines, I'd recommend the Air Breeze Marine:

http://www.altestore.com/store/Wind-Turbines/Southwest-Windpower-Turbines-Parts/Southwest-Wind-Power-AIR-Breeze-Series/c1206/

The power/energy output you can expect will obviously vary with the average wind speeds you can expect. If you can estimate those wind speeds then you can determine the kwh's output on a monthly level - and then deduct that from what you would need from your solar panel design. That is, using that same off grid calculator reduce the the watt-hours requirement by whatever you think you could producing by using that wind turbine.

Hope that helps!

And, of course, if you need more help please feel free to also call our knowledgeable sales staff toll free.