Ahoy Mates!
Guess what I found on Senior Environment Artist George O'Keeffe's artstation account.
I know you give up so I'll show you:
That mates is a Tall Tales Quest book for a Tale called: "Lords of the Sea", which currently isn't in the game.
Lords of the Sea what could that mean?
Maybe the symbols on the book will provide some answers.
Oh, I almost forgot!
Spoilers ahead for Tall Tales Chapter 8 Revenge of the Morning Star:
Now that we have that out of the way, we can decipher what the Skeleton Symbols mean.
It says:
Lord
To
Camp
Heart
Skeleton
Huh, I wonder what that means?
I'll leave it to you mates to speculate on what it's meaning is.
Anyways mates, that's all all I got for now, let me know what ya think of this unreleased Tall Tale Quest book!
Until then see ya on the seas!