Floating battery

For the type of electrical battery, see Deep cycle battery and Storage battery.
Wash drawing of a floating battery. On the battery are a number of cannon and mortars as well as multiple artillery men.
Wash drawing of a floating artillery battery from the 18th century.
French Navy ironclad floating battery Lave, 1854. This ironclad, together with the similar Tonnante and Dévastation, vanquished Russian land batteries at the Battle of Kinburn (1855).
Ironclad floating battery of the Dévastation class, spending the winter of 1855–1856 in the Crimea.
The floating battery Paixhans (1862), designed for war in Cochinchina
French armoured floating battery Arrogante (1864)

A floating battery is a kind of armed watercraft, often improvised or experimental, which carries heavy armament but has few other qualities as a warship.