Reference:RAWA/Pirate Bob

From Guild of Archivists

Q: In Mechanical age, when the fortress is pointed north, you can see a skeleton hanging from a pole when you look through the telescope in Sirrus room. Who is that skeleton? My first thought was that it is one of the crew of the black ships but why should a wreckage of those ships lie so far out to sea?

A: The skeleton (nicknamed "Bob") was a member of the crew of the Black Ships. The exact reason for his being tied to the raft and left to wander the seas has long been forgotten.