The vessel named Alexander, originally launched in 1807 as a Thais-class fireship of the Royal Navy, underwent significant modifications and service over its lifespan. Built with a displacement of approximately 427 tons, the ship was initially designed for combat, but was later reclassified as a sloop and then as a 20-gun sixth rate. During her naval service, she was armed and crewed to engage in various military actions, including a notable engagement on 11 August 1808 when she captured the French corvette Sylphe near Île d'Yeu after a 20-minute battle in which the French suffered seven killed and five wounded, while the British suffered no casualties. Her participation in this action earned her commander, Daly, a promotion to Post-captain, and the crew was later awarded the Naval General Service Medal in 1847. Throughout her naval career, HMS Comet operated primarily in the waters off Newfoundland and the Channel, performing patrols, convoy escorts, and capturing enemy vessels such as Hero in 1813. She was reclassified as a sixth rate in 1812 under Captain George Blamey and continued her service until she was paid off and sold in 1815 for £1,400. Following her sale, the vessel was renamed Alexander and entered mercantile service. She underwent thorough repairs in 1816 and was licensed to sail under a British East India Company license, enabling her to travel to India, Ceylon, and other parts of the Indian Ocean. As a merchant vessel, Alexander undertook multiple voyages between Britain, Ceylon, Mauritius, and the Cape of Good Hope, carrying goods, passengers, and engaging in regional trade. Her maritime career ended when she was wrecked on 6 August 1828 at Cole House Point on the River Thames near Gravesend during her return voyage from Ceylon, resulting in the loss of her cargo. The ship's transition from naval combatant to merchant ship and her eventual wreck highlight her varied and active maritime history.

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