HMS Polyphemus, a 64-gun third-rate ship of the line of the Royal Navy, launched on 27 April 1782 at Sheerness. She participated in the 1801 Battle of Copenhagen, the Battle of Trafalgar, and the Siege of Santo Domingo. In 1813 she became a powder hulk and was broken up in 1827. Early career Polyphemus was laid down at Sheerness in 1776. On 26 April 1778, His Majesty King George III visited Sheerness to inspect the dockyards. There he saw Polyphemus, which was standing in her frame to season. She was launched in 1782 and commissioned under Captain William C. Finch, who then sailed her to Gibraltar. She was part of a British fleet under Admiral Richard Howe successfully resupplied Gibraltar, then under siege by Bourbon forces. Shortly after, the British fleet met the Franco-Spanish fleet under Admiral Luis de Córdova y Córdova on 20 October 1782. The consequent battle of Cape Spartel was indecisive. Polyphemus was part of the second division of the van, and suffered four men wounded. In late 1782, Admiral Sir Richard Hughes took a squadron that included Polyphemus, under Captain Thomas Sotheby, out to the West Indies. On their way the British encountered a French convoy off Martinique. The action of 6 December 1782 lasted 40 minutes, during which time , under Captain John Collins, captured the French 64-gun ship Solitaire, under Jean-Charles de Borda. Solitaire had 35 men killed and 55 wounded whilst Ruby had only two men wounded. Two days later the squadron arrived at Barbados. The Royal Navy took Solitaire into service as HMS Solitaire. Polyphemus shared with Ruby in the head money for the capture of Solitaire, while the other vessels of the British squadron did not, suggesting that Polyphemus assisted Ruby. At the end of the war in 1783, her crew was paid off in June. Then she received some repairs between December 1783 and December 1784. French Revolutionary Wars In December 1793, after the outbreak of war with France, Polyphemus underwent fitting that at Chatham that took until June 1794. Captain George Lumsdaine commissioned her in April. Irish station Polyphemus and shared in the recapture on 21 September 1795 of the vessel Hibberts. Polyphemus was operating off Queenstown, Ireland, on 22 October when she took possession at Cork of the Dutch 64-gun ship Overijsel (or Overyssel), which the Royal Navy took into service as HMS Overyessel. Polyphemus then became the