The Peace of Amiens temporarily ended the war with France, and Beaver and the "Déterminée" were ordered home. The "Déterminée" was paid off at Portsmouth on 19 May 1802, and Beaver was put in charge of the sea fencibles of Essex in July 1803. He was highly successful in these duties, and three years later returned to sea, having been appointed to command the 40-gun frigate HMS "Acasta". He sailed her to the West Indies, remaining there until after the capture of Martinique in February 1809. He returned to England and after a few months, was appointed to command the 38-gun HMS "Nisus", departing aboard her for the East Indies on 22 June 1810. He arrived on the station and joined the squadron under the command of Vice-Admiral Sir Albemarle Bertie. Beaver played a distinguished part in the capture of Mauritius in November 1810. Beaver and the "Nisus" then moved to a squadron under Rear-Admiral Robert Stopford and took part in the conquest of Java in August and September 1811. He spent nearly a year in Mozambique and off the coast of Madagascar, and received orders by the end of 1812 to return to England.