HMS Victory was an ancient Earth sailing vessel that had belonged to the British Royal Navy, and one of the most famous ships in its naval history. She had served as the flagship for Admiral Horatio Nelson at the Battle of Trafalgar in 1805. Nelson himself was killed in the battle.
In 2365, Geordi La Forge was preparing to give a model of Victory to the captain of the starship USS Victory. The model was slightly damaged as a result of Moriarty's tampering with the holodeck. (TNG: "Elementary, Dear Data")