In 1820 and 1821 he commanded on whale hunting voyages to the Greenland whale fishery. In 1821 he was accompanied on the Baffin (1820) of Liverpool to Greenland by George Manby, who wished to test a new type of harpoon for whaling, based on the same principles as his Manby mortar. Manby published his account in 1822 as Journal of a Voyage to Greenland, containing observations on the flora and fauna of the Arctic regions as well as the practice of whale hunting.
