Breslaw was a 90-gun of the French Navy. She was the twenty-second ship in French service named in honour of Louis IX of France.
Started as Achille, the ship was renamed Saint Louis in 1839. She took part in the Crimean War as a troop ship, and served in the French intervention in Mexico in 1862.
She was used as a prison hulk for prisoners of the Paris Commune, then as an ammunition store, and was eventually broken up in 1886.