HMS Polyphemus was a 64-gun third-rate ship of the line constructed for the Royal Navy, launched on 27 April 1782 at Sheerness. Laid down in 1776, she was inspected by King George III in her framing stage in 1778 before her official launch. She measured approximately 1776-1782, she served as a formidable battleship with a typical armament of 64 guns, and was built to participate in major naval engagements. Polyphemus’s early service included supporting the British relief of Gibraltar during the Great Siege and engaging in the Battle of Cape Spartel in October 1782, where she sustained minor casualties. Later that year, she participated in an action off Martinique, aiding in the capture of the French ship Solitaire, which was taken into Royal Navy service as HMS Solitaire. Her service during the post-war period involved repairs and preparations for renewed conflict. With the outbreak of war in 1793, Polyphemus was recommissioned in April 1794 under Captain George Lumsdaine. She was active off Ireland, capturing Dutch and French vessels, including the Dutch ship Overijsel in 1795, and engaging in the notable capture of several privateers and transports during the French Revolutionary Wars. Her role expanded to participating in the ill-fated expedition to Ireland in late 1796, where she captured several transports and a French frigate, Tartu. Polyphemus’s most distinguished moment came during the Battle of Trafalgar in October 1805 under Captain William Pryce Cumby, where she fought in the Lee column, engaging French ships Neptune and Achille, and capturing the Spanish Argonauta. She also towed Nelson’s body aboard HMS Victory back to Gibraltar. Her participation in this decisive battle earned her a battle clasp and prize money. Throughout her service, Polyphemus also supported operations in the Baltic, the Caribbean, and off South America, capturing numerous enemy vessels and participating in blockade and convoy duties. After her active combat career, she was converted into a powder hulk in 1813 and was broken up in 1827, marking the end of her maritime significance as a prominent vessel of the Royal Navy.

This description has been generated using GPT-4.1-NANO based on the Vessel's wikidata information and then modified by ShipIndex.org staff.