HMS Bellerophon was a 74-gun third-rate ship of the line of the Royal Navy. Launched in 1786, she served during the French Revolutionary and Napoleonic Wars, mostly on blockades or convoy escort duties. Known to sailors as the "Billy Ruffian", she fought in three fleet actions, the Glorious First of June, the Battle of the Nile and the Battle of Trafalgar, and was the ship aboard which Napoleon finally surrendered, ending nearly 22 years of nearly continuous war with France.