Andrea Doria was an ironclad battleship built for the Italian Regia Marina (Royal Navy) in the 1880s and 1890s. Named for the 16th-century Genoese admiral Andrea Doria, she was the third and final ship of the Ruggiero di Lauria class. The ship was armed with a main battery of four 432 mm (17 in) guns, was protected with 451 mm (17.75 in) thick belt armor, and was capable of a top speed of 17 knots (31 km/h; 20 mph).