She was commissioned in May 1804 at Bermuda under Lieutenant Peter S. Prieur for the Newfoundland station. Later that year Lieutenant Richard Williams assumed command, after serving as a Master's Mate on Isis. In 1805 he was succeeded by Lieutenant John G.M'B. McKillop. His replacement, in 1807, was Lieutenant Thomas Bishop. In November 1808 he sailed her to Britain. On the way she encountered a gale and had to throw all her guns overboard to lighten her.