To open the door, equip the Bloodskal Blade. Same goes for the reverse direction anywhere in skyrim, click that arrow thing and you fast travel to the ship in Raven Rock.
On the map, look for an arrow in the bottom left hand corner, click it to fast travel back to Skyrim. Raven Rock The best bet is to kill Garyn Ienth because he doesn’t offer much in the way of trading.) Can you go back to Raven Rock Skyrim?
