A piratical adventurer is someone who engages in piracy, which is the act of attacking and robbing ships at sea. A BUCCANEER is a type of PIRATE who operated in the Caribbean during the 17th and 18th centuries. A PRIVATEER is a person or ship authorized by a government to attack enemy vessels during wartime. A ROVER is a PIRATE who roams the seas in search of plunder. Finally, a PIRATE is a person who attacks and robs ships at sea without authorization from any government.