The French ironclad Surveillante was one of 10 Provence-class armored frigates built for the French Navy (Marine Nationale) during the 1860s. Commissioned in 1867, she was initially assigned to the Northern Squadron (Escadre du Nord). The ironclad played a minor role as a flagship in the Franco-Prussian War of 1870–1871, blockading the Baltic and North Sea coasts of Prussia. Surveillante was decommissioned after the war, but was reactivated in 1876. She was transferred to the Mediterranean Squadron (Escadre de la Méditerranée) the following year.