French screw steam floating battery la Lave (1854) in 1859

Homeport Toulon, France. Laid down at Lorient, France on 20 August 1854 and launched on 26 May 1855. Machinery manufactured at Le Creuzot, France and delivering 225hp. Wood built. Armed with 18 guns.

Source
Hans Busk. The Navies of the World, London, United Kingdom, 1859.