HMS Agamemnon was a 64-gun third-rate ship of the line of the British Royal Navy. She saw service in the American Revolutionary War, French Revolutionary and Napoleonic Wars, and fought in many of the major naval battles of those conflicts. She is remembered as being Nelson’s favorite ship, and was named after the mythical ancient Greek king Agamemnon, being the first ship of the Royal Navy to bear the name. The future Lord Nelson served as Agamemnon’s captain from January 1793 for 3 years and 3 months, during which time she saw considerable service in the Mediterranean. After Nelson’s departure, she was involved in the infamous 1797 mutinies at Spithead and the Nore, and in 1801 was present at the first Battle of Copenhagen, but ran aground before being able to enter the action. Despite Nelson’s fondness for the ship, she was frequently in need of repair and refitting, and would likely have been hulked or scrapped in 1802 had war with France not recommenced. She fought at the Battle of Trafalgar on 21 October 1805, as part of Nelson’s weather column, where she forced the surrender of the Spanish four-decker Santísima Trinidad. Agamemnon’s later career was served in South American waters off Brazil. Her worn-out and poor condition contributed to her being wrecked when in June 1809 she grounded on an uncharted shoal in the mouth of the River Plate, whilst seeking shelter with the rest of her squadron from a storm. All hands and most of the ship’s stores were saved, but the condition of the ship’s timbers made it impossible to free the ship; her captain was cleared of responsibility for the ship’s loss thanks to documents detailing her defects. In 1993, the wreck of Agamemnon was located, and several artefacts have since been recovered, including one of her cannons.