 Adamant spent between May 1803 and August 1804 under repair at Chatham Dockyard, before recommissioning in June under Captain George Burlton. On 13 April 1805 Adamant and HMS Inflexible captured the 4-gun privateer Alert, and in October 1805 command passed to Captain John Stiles. Stiles escorted a convoy of East Indiamen in 1806, and on 6 May captured the Spanish 26-gun privateer Nuestra Señora de los Dolores off the Cape of Good Hope. On 17 June 1807 he added another prize to his total, capturing the 1-gun privateer Bueno Union while serving on the Jamaica station. Stiles was succeeded by Captain Micaiah Macbon in October 1807, and Adamant returned to the Jamaica station the following year. By early 1809 she was back in Britain, and spent the period between April and July 1809 being fitted at Chatham for service as a receiving ship at Leith. She was recommissioned in May 1809 under Captain John Sykes and in August took part in the Scheldt operations. Captain Matthew Buckle took command in August 1810, and remained Adamant's captain for the next three years, which she spent as flagship of Rear-Admiral Robert Otway, and as a receiving ship at Leith. As the Napoleonic Wars drew to a close the ship was laid up in ordinary at Sheerness in 1814, and then broken up there in June 1814.
