From the introduction: With Pirate Adventures you can provide your players with new player character options for 5th edition to create pirate themed characters. These options can be used to play an entire campaign in a pirate setting, or just to provide a player with more pirate flavored options than provided by core 5th edition materials. Allow your players to dive into custom backgrounds, equipment, feats and shipboard roles created just for their swashbuckling pirates and privateers.