" Pelorus" was commissioned in July 1808 under Commander the Honourable James William King, and sailed for the Leeward Islands on 15December. In January 1809 Commander Thomas Huskisson was appointed commander of "Pelorus", but did not find out until May. Therefore, he was not her commander at the capture of Martinique in February. (Some accounts have her under the command of Captain Francis Augustus Collier; however, he was commander of .) Under Huskisson she then took part in enforcing the blockade of Guadeloupe. In 1847 the Admiralty awarded the Naval General Service Medal with clasp "Martinique" to any surviving crewmen from that campaign that wished to claim it.