Sunsail
You have 1 or sometimes 2 12vdc cigarette lighters.You can plug in an inverter, but this can suck a lot of power just to charge an ipod. Instead get the auto accesory option for your ipod, that allows you to plug direct into a cigaratte lighter (in your car & boat its the same).When I go to sunsail I bring.(1) Radio Shack 3 sway splitter, with extension cord, for the cigaratte lighter, so I can plug in more than one item.(2) 150 watt inverter. To charge my daughters portable DVD player, when the engine is running, and run the few other A/C items I have.(3) Various AUTO accesories for my other electronics so I can plug direct to 12vdc with little power consumption (e.g. my cell phone, iPod, blackberry)