HMS Fearless was one of five legendary ships encountered by the pirate Edward Kenway in the Caribbean, during the early 18th century. She was the sister ship of the Royal Sovereign; both were identical, save for the reversed coloring of their sails and hull. They could be found sailing beyond the Bahamas, on the edge of the Atlantic Ocean.
The pair became notorious for their battle tactics, which involved the two employing a funneling maneuver, quickly moving apart on both sides of an enemy ship in a v-shaped formation to ensure it was flanked between them. Their speed and vectors ensured that any attempt to escape by altering course laterally was futile. Once their target was trapped, they would hit it with devastating broadside volleys.
HMS Fearless was certainly known to live up to her name. In the event that her sister was sunk, HMS Fearless would set herself alight and use her speed and maneuverability to incessantly and viciously ram the enemy ship, which invariably destroyed the opposing vessel unless she was too damaged to survive more than a few successful strikes from the enemy ship's weapons. Despite their tandem battle strategies and impressive firepower, both ships were eventually sunk by Kenway's Jackdaw and their reign of terror over the seas was ended.