On 29 March 1811, she departed Toulon under ensiegne de vaiseeau Morin, carrying gunpowder and ammunition for Corfu, escorted by the frigates Adrienne and Amélie.

Ajax captured Dromadaire, while the frigates managed to escape to Portoferraio.

Captain Otway of Ajax reported that Dromadaire was frigate-built and sailed remarkably well.

[1] Apparently Napoleon Bonaparte intended them as a present for Hammuda ibn Ali, the Bey of Tunis.

Admiral Sir Charles Cotton, commander in chief of the British Mediterranean Fleet, decided to buy her and her stores for the Royal Navy.