Royalist captured Beau Marseille on 10 December 1809. She was armed with 14 guns, had a crew of 60 men and was three months old. Commander John Maxwell, captain of Royalist, described her as "a very beautiful vessel" and "one of the fastest sailers out of Boulogne." The Royal Navy took Beau Marseille into service as Defender. From 15 February to 16 March 1811 she underwent fitting out at Sheerness. In January 1811 Lieutenant Moses Cannadey RN commissioned her for The Downs. On 24 June 1813 Defender captured the Hope.