4th EIC voyage (1794–1795): War with France had begun in February 1793. Captain Henry Bullock acquired a letter of marque on 7 April 1794. He sailed from Plymouth on 20 June 1794, bound for Bengal and Madras. He sailed from Plymouth on 20 June 1794, bound for Bengal and Madras. "Thetis" arrived at Diamond Harbour on 8 December. Homeward bound, she was at Saugor on 19 March 1795, stopped at Madras on 13 April, reaches St Helena on 14 August, and arrived at the Downs on 25 November.