I want to add a simple shore power hook-up.
I know I'll need a through the wall cover and plug recptical that is wired
to a breaker. From the breaker I would guess to a std GFI plug-in for
running heaters or small appliances? And if I want to hook up an automatic
battery chage from the breaker to the charger.

Is it that simple or do I have to run any special grounding. If so please
explain the grounding in detail. I've heard there may be special grounding
but do not understand what the special grounding is about or what and where
it grounds to. I figured that the grounding would come from the shore power
circuit on the dock.