[1] On 6 May 1811, a French squadron of frigates under the command of Commodore François Roquebert in Renommée approached Grand Port, not realizing that Isle de France (now Mauritius) had fallen to the British.

During the battle, Renommée and Clorinde badly battered Galatea, with the result that she lost 16 men killed and 46 wounded – the largest number of casualties of any vessel in the squadron.

[2][a] In 1847 the Admiralty authorized the award of the Naval General Service Medal with clasp "Off Tamatave 20 May 1811" to all surviving claimants from the action.

On 27 September 1812, Galatea left St Helena, escorting three whalers: Admiral Berkley, Argo, and Frederick.

[1] In August 1825 Captain Sir Charles Sullivan recommissioned Galatea and then went on to command her on the coasts of Portugal and South America until 1829.

[6] Between January and May 1829, Napier fitted her with an experimental system of his own design of paddles that the crew would work via winches on the main deck.

Between August and October 1830 she was sent to Lisbon to demand the restitution of British merchantmen which had been seized by the government of the Portuguese usurper Dom Miguel, and in May–July 1831 she was engaged in guarding British interests in the Azores when the forces of Dom Pedro were engaged in recovering those islands for the rightful queen, Donna Maria II.

Napier quit Galatea in 1832 after she was paid off and succeeded George Sartorius as commander of Dom Pedro's navy in February 1833.