White made two voyages to the Mediterranean, after which she operated in the North Sea by 1809. She passed under a succession of masters over the next few years. While under the command of Richard Turner, master, in August 1815 she accompanied the 74-gun , and the troopship HMS "Ceylon" as "Northumberland" carried Napoleon into exile at Saint Helena. She was at St Helena on 15 November 1815. On 14 September 1817 she was at Lebida (Leptis Magna), together with . There they loaded columns, marbles, and other antiquities. "Weymouth" then left for Malta. In March 1818 she delivered them at Deptford, together with a nine-ton granite head that at the time was believed to be that of Memnon, King of Abydos, Egypt. Henry Salte, the British Consul General to Egypt had sent it as a present to the British Museum, and "Weymouth" had loaded it at Malta. In 1820 "Weymouth" visited the Cape Colony. On this voyage she embarked 478 British 1820 Settlers at Portsmouth to take them to Algoa Bay. Captain Turner left Portsmouth on 7 January 1820, arrived in Table Bay on 25 April 1820. At Simon's Bay "Weymouth" took on board the immigrants that had come on . "Weymouth" arrived in Algoa Bay on 15 May 1820. "Weymouth" was laid up in ordinary at Deptford in November 1821. Between February and October 1828 she was fitted out as a prison ship. In September William Miller became master, and in 1829 sailed her to Bermuda. There she served as a prison hulk. On 12 September 1839, her bows were severely damaged in a hurricane at Ireland Island, Bermuda. She was described as a victualling depot ship of 1,160 tons. "Weymouth" was finally sold there for £300 on 2 July 1865 and was broken up. At Fairbairn College, Cape Town, one of the sports fields is named after HMS "Weymouth".