Why do pirates have pirate captains?
Every ship requried an individual in charge, and the title for any ship's commander (regardless of actual rank) is Captain. Pirates needed an individual to led them and command the ship.
What are the release dates for Jake and the Never Land Pirates - 2011 Pirates of the Desert The Great Pirate Pyramid?
Reading pirates' minds is an apparently a lost art. However, it's reasonable to assume that when any sailing vessel finds itself in extreme cold, ice, and among icebergs, the captain would probably turn the ship toward warmer, less dangerous water. This assumption is safe to make about pirate ship captains.