Pirate Map

The Pirate Map is a Hardmode item used to summon a Pirate Invasion. It has a 1% chance of dropping from any enemy in or close to the ocean during Hardmode.

Farming
It can be farmed by setting up an artificial Meteorite biome at the Ocean and killing all of the Meteor Heads. If the player has made a Neptune's Shell and has any kind of attacking minion (such as the Pygmy Staff), they can also simply wait underwater, allowing the minion to kill enemies as they spawn. A Water Candle and/or Battle Potion will speed up the process.