HMS Viper was launched at Cowes in 1805 as the mercantile schooner Princess Charlotte. The Royal Navy purchased her in 1807. Lieutenant William Towning commissioned her. On 9 (or 18) February 1809 she sailed from Cadiz for Gibraltar. She never arrived and was presumed to have foundered with all hands.[1][2]
Hepper, David J. (1994). British Warship Losses in the Age of Sail, 1650–1859. Rotherfield: Jean Boudriot. ISBN0-948864-30-3.
Winfield, Rif (2008). British Warships in the Age of Sail 1793–1817: Design, Construction, Careers and Fates. Seaforth Publishing. ISBN978-1-86176-246-7.