The Regioni class was a group of six protected cruisers built for the Italian Regia Marina (Royal Navy) in the late 1880s through the early 1900s. The class comprised Umbria, Lombardia, Etruria, Liguria, Elba, and Puglia, all of which were named for regions of Italy with the exception of Elba, which was named for the island. The class is sometimes referred as the Umbria class, for the first ship to be laid down. The ships, built by four different shipyards, varied slightly in their size, speed, and armament, but all could steam at about 18 kn (33 km/h; 21 mph) and their main armament consisted of four 15-centimeter (5.9 in) guns and six 12 cm (4.7 in) guns.