Lave was an ironclad floating battery of the French Navy during the 19th century.

In the 1850s, the British and French navies deployed iron-armoured floating batteries as a supplement to the wooden steam battlefleet in the Crimean War.

The role of the battery was to assist unarmoured mortar and gunboats bombarding shore fortifications.

The French used three of their ironclad batteries (Lave, Tonnante, and Dévastation) in 1855 against the defences at the Battle of Kinburn (1855) on the Black Sea, where they were effective against Russian shore defences.

This article about a specific military ship or boat of France is a stub.