The Etna class was a class of six 16 or 18-gun corvettes with a flat hull, designed by Pierre-Alexandre-Laurent Forfait and his pupil Charles-Henri Tellier. Four separate commercial shipbuilders were involved in their construction by contract - including André-François Normand, Courtois and Denise at Honfleur, and Fouache at Le Havre (2 ships), while the sixth vessel was built by Pierre Ozanne at Cherbourg Dockyard. The vessels were flush-decked and originally designed to carry a 12" mortar. However, as the British navy captured Etna within a year and a half of her launch at which time she was not carrying any mortar, it is possible that the design was modified quite early to delete the mortar.