The most challenging maps for you.

The Captain's Hat (found near the Inferno village, next to Dess) grants a spell that summons a ship. If there are no boats on the map, advanced water magic allows you to create a ship.

Yes, that's how it should be, but it's not. The hat is a composite item, and near Inferno, you only get one part. The second part is with a friend in the Dungeon.
I don't need to tell you this, but the question remains unanswered.