While in British service, Sybille participated in three notable single-ship actions, in each case capturing a French vessel.
On anti-slavery duties off West Africa from July 1827 to June 1830, Sybille captured many slavers and freed some 3,500 slaves.
From March 1793 to January 1794, under CV Rondeau, she escorted convoys between Toulon and Marseilles and then she moved to the Levant station.
On 17 June, as Sybille was anchored in Miconi along with three merchantmen bound for Cadiz, a British convoy escorted by HMS Romney, under Captain Paget, and three frigates appeared.
Romney opened fire, and after 90 minutes of gunnery exchanges, Sibylle struck to her much more powerful opponent.
Though his grave is in Calcutta, the East India Company erected a monument to him in Westminster Abbey in appreciation of the benefit to British trade of his capture of Forte.
In 1847, the Admiralty authorized the issuance of the Naval General Service Medal with clasp "Sybille 28 Feby.
On 19–20 August 1801, in the Roads of Mahé, Seychelles, Sybille captured the French frigate Chiffonne, under the command of Capitaine de Vaisseau Guieyesse.
Chiffonne had captured the Portuguese corvette Andorinha off the coasts of Brazil on 5 May, and the East Indiaman Bellona in the Madagascar Channel on 16 June.
[10] On 3 May 1807, under Captain Robert Winthrop, Sybille captured the French 4-gun privateer Oiseau in the English Channel.
On 25 January 1808, while on the Home station, Sibylle captured the French privateer lugger Grand Argus.
[11] Then on 16 August, Sybille captured the French brig-corvette Espiègle,[12] later recommissioned in the Royal Navy as Electra.
Aigle, of 61 men under the command of Captain Alexander Black, had thrown eight of her 14 guns overboard while trying to escape Sybille.
[20] Captain Sir John Pechell took command of Sybille on 1 July 1823 and fitted her out for service in the Mediterranean.
She sailed in October and proceeded to spend three years protecting the Ionian Islands and suppressing piracy.
A year later, Sybille enforced an indemnity on the government of the First Hellenic Republic for an attack on a Turkish vessel at Ithaca in December 1823 in violation of the neutrality of the United States of the Ionian Islands.
[21][22] In October 1825, boats from Sybille and Medina, Captain Timothy Curtis, found a Greek pirate mistico and her prize at anchor in a cove at Catacolo.
Sybille's next notable action occurred when she attacked a pirate lair at Kaloi Limenes at the end of June 1826.
Sybille left the island though some time later a Turkish brig chased the pirates' remaining boat ashore in Anatolia, thus ending that threat.
On 6 September 1827, Sybille captured the Brazilian ship Henriqueta (also Henri Quatre), with 569 slaves on board, of whom 546 survived to be liberated in Sierra Leone.