In Assassin's Creed IV: Black Flag, Edward Kenway's main ship is called the Jackdaw.
Edward, a Welsh privateer turned pirate and Assassin, acquires the brig early in the game and uses it to explore the Caribbean. The Jackdaw is both transportation and a major gameplay system: players sail it, fight naval battles, board vessels, and improve its hull, weapons, and cargo capacity.
The ship is central to Black Flag's pirate setting, which includes Havana, Kingston, Nassau, and a broad open sea. Edward's vessel should not be confused with other Assassin's Creed ships. The Aquila belongs to Connor Kenway in Assassin's Creed III, while the Morrigan is Shay Cormac's ship in Assassin's Creed Rogue.
The title Black Flag reflects the game's emphasis on piracy and Caribbean seafaring. Its story is set during the Golden Age of Piracy and combines real historical pirates with the series' fictional Assassins-versus-Templars conflict.