The note the sailor gave you looks like a letter requesting for help.
Value: 50000
Title: Letter for Help
Author: Anonymous
To whoever sees this letter, please save me!
Three years ago, my fleet was attacked by a ghost ship around Cape Storm. To survive, I had no choice but became a sailor on the ghost ship.
The captain was a lunatic. He didn't allow us to dock, so we had to drift on the sea, robbing supplies and cargos from the poor soldiers.
We were only allowed to dock when in lack of supplies. I spent three years to earn the captain's trust and had this opportunity to...
According to those on board, the captain's name is Thunder Piper. He's from Hamburg.
Flagship is Claire, a ship that used to belong to the Danglars Fleet.
I don't want to be a pirate. I hate robbing others...
Please, no matter who you are...
Please save me... (The words are too blurry to read from here.)