IGN guides you to victory over one of the four legendary ships found in Assassin's Creed IV: Black Flag. La Dama Negra, or "The Black Queen," is found in the Serranilla section at the SouthEast corner of the map, and it's primary attack is its large and powerful mortar, as well as it's heavily armored bow and sides. The best strategy for destroying this ship is to do your best to avoid incoming mortar fire and make your way to the stern of the ship where it is weakest.