French ironclad Amiral Duperré
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Amiral Duperré was an ironclad barbette ship built for the French Navy in the 1870s and 1880s; she was the first vessel of that type built by France. Wikipedia
Launched: September 11, 1879
Length: 320′
Construction started: December 7, 1876
Armor: Belt: 254 to 559 mm (10 to 22 in); Barbettes: 305 mm (12 in); Gun shields: 51 mm (2 in); Conning tower: 38 mm (1.5 in)