The Algésiras class consisted of five second-rank, 90-gun, steam-powered ships of the line built for the French Navy in the 1850s.

Most of the ships participated in the Second Italian War of Independence in 1859 or the Second French intervention in Mexico in the 1860s.

The ships displaced 5,121 tonnes (5,040 long tons) and had a draught of 8.45 metres (27 ft 9 in) at deep load.

[1] The primary difference between Napoléon and the Algésiras class was that the boilers of the latter ships were moved forward of the engines.

They were fitted with three masts and ship rigged[1] with a sail area of 2,010 square metres (21,600 sq ft).