@seancamel wrote:
Where can I find this boat? I haven't seen any?
As for dragons so far I killed the ones in Hinterlands and Exalted Plains. Is the one from Storm Coast harder then them?
Yes, storm coast is rather difficult compared to those two. It's electric also so it's good to gear up on cold spells/items and armor with resistance.
My walkthrough on getting there will be up shortly to show where the boat it. Keep in mind though you have to find a key in this area to unlock the door, the save I loaded from already had that part complete.