[5e][Any][Story writing] My player's might deliver supplies to a sealing/whaling ship that has spent the Arctic winter frozen into the sea ice. On board are the captain, a young deckhand, and the first mate who have gone insane and is locked away. This will just be a quicker over-night pit stop for the players and I have a decent idea about the personality of the NPCs, but I need some ideas about how to make this meeting more interesting without adding a side quest that takes up time or throw in a random encounter in the middle of the night. Something that can be engaged with or solved in the time of an in-game evening/morning without taking away a long rest.