Yes, I park the boat between two walls, then one floor above the storage space is enough and it's OK. The Vikings could manage even without an anchor and a mooring rope.
And what about the interaction between the ship and the pier : dock yes/no . I miss that, especially in the field, outside the base. We have gates, magic wands, a black forge, but the ship is in stone age condition. Well, that's probably for another section of the discussion. It's still a great game.
Good luck