A Gift for the Pirate-King

 is considered a Trade good item.

Item description
"Fresh from the Surface, only a little bruised."

Obtaining
 can be obtained in the following ways:

Usage
 has the following uses:
 * Deliver this item to your Patron in the Isle of Cats to advance the storylet.
 * Note that getting caught with the Captive in London will lock you out from any further Isle of Cats Missions.