HMS Trafalgar was ordered as a 98-gun second rate ship of the line, re-rated as a 106-gun first rate ship of the line in February 1817 and launched on 26 July 1820 at Chatham. She was jointly designed by the Surveyors of the Navy at the time, and was the only ship built to her draught. She was renamed HMS Camperdown on 22 February 1825. Camperdown was placed on harbour service in 1854 and became a coal hulk three years later. She was renamed HMS Pitt on 29 July 1882 and was sold out of the Navy in May 1906.