HMS Alligator was a 28-gun Enterprise-class sixth-rate frigate of the Royal Navy, constructed during the late 18th century. Ordered during the American War of Independence, she was laid down in December 1782 by Philemon Jacobs at Sandgate and launched on 18 April 1787. Her construction cost totaled £2,771, with an additional £4,330 spent on fitting out. The vessel was completed gradually between 1787 and 1790 at both Deptford Dockyard and Randall & Co at Rotherhithe. As a sixth-rate frigate, Alligator featured a typical armament of 28 guns, suitable for various roles including patrolling, escorting, and combat during the period. She was first commissioned in June 1790 under Captain Isaac Coffin, who notably rescued a crew member overboard at the Nore, suffering a lifelong injury from the effort. Initially serving in British waters during tense pre-war periods, she later operated across the Mediterranean and North American coasts. With the outbreak of war in 1793, Alligator saw active service in the West Indies under Captain William Afleck, engaging in anti-privateer operations and capturing several enemy vessels, including the French ship Triomphant in Hispaniola and the Liberté near Jamaica. She participated in the seizure of Saint Pierre and Miquelon in 1796, capturing multiple vessels and supporting British efforts in North America. During her service, she was involved in significant actions such as the capture of Port-au-Prince and the blockade of French colonies. In 1800, Alligator was refitted as a 16-gun troopship and supported British military campaigns in Egypt, notably during the landing at Abu Qir Bay. She continued active service in the Caribbean and the Leeward Islands, capturing Dutch and French ships and contributing to squadron operations, including the capture of Surinam in 1804. Throughout her career, she was commanded by various officers, including Captain George Bowen, Commander Charles Richardson, and Captain Hugh Pigot. By 1814, as her service was no longer required following the end of the Napoleonic Wars, HMS Alligator was laid up at Plymouth and sold for £1,760. Her career exemplifies the versatile role of sixth-rate frigates in British naval operations during the late 18th and early 19th centuries, including anti-privateer patrols, troop transport, and fleet support across key theaters of conflict.

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