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.

The Battle of Cape Spartel was an indecisive naval battle between a Franco-Spanish fleet under Admiral Luis de Córdova y Córdova and a British fleet under Admiral Richard Howe. These forces met on 20 October 1782 after Howe successfully resupplied Gibraltar, then under siege by Bourbon forces during the American Revolutionary War.