HMS Trafalgar was ordered as a 98-gun second-rate ship of the line,^[1] re-rated as a 106-gun first-rate ship of the line whose keel was laid in 1813 and which was launched on 26 July 1820 at Chatham. She was designed by the Surveyors of the Navy (including William Rule), and was the only ship built to her draught.^[1]

HMS Camperdown 1843
History
United Kingdom
Name	HMS Trafalgar
Ordered	12 June 1807
Builder	Chatham Dockyard
Laid down	May 1813
Launched	26 July 1820
Decommissioned	1854
Renamed	HMS Camperdown, 22 February 1825 HMS Pitt, 29 July 1882
Fate	Sold, May 1906
General characteristics [1]
Class and type	98-gun second-rate ship of the line
Tons burthen	2,404 bm
Length	196 ft (60 m) (gundeck)
Beam	52 ft 6 in (16.00 m)
Depth of hold	22 ft 8 in (6.91 m)
Propulsion	Sails
Sail plan	Full-rigged ship
Armament	98 guns: Gundeck: 28 × 32 pdrs Middle gundeck: 30 × 18 pdrs Upper gundeck: 30 × 12 pdrs Quarterdeck: 6 × 12 pdrs, 8 × 32 pdr carronades Forecastle: 2 × 12 pdrs, 2 × 32 pdr carronades Poop deck: 6 × 18 pdr carronades

She was renamed HMS Camperdown on 22 February 1825.

Camperdown was placed on harbour service as a guard ship at Portsmouth in 1854 and became a coal hulk (acting as a floating depot) at Portsmouth in 1860 and remained there thereafter.

She cannot have been the hulk referred to in the unpublished diary of Col. Archibald Butter (1857) as lying in Simons Bay, near Cape Town, South Africa: 'The Camperdown a hulk is kept as a store ship'. She was renamed HMS Pitt on 29 July 1882 and was sold out of the Navy in May 1906 and was broken up at Charlton.^[2]