The Ventôse is a light monitoring frigate ("frégate de surveillance") of the French Marine Nationale. She is the fourth ship of her class, and the first French vessel named after Ventôse, the 5th month of the Republican Calendar. She was used in the French response to Hurricane Katrina. The Ventôse took part in the recovery operation for the Air France Flight 447 which crashed some 960 kilometres off the northeast coast of Brazil on 1 June 2009.