sentences:  "Impero"s main armament would have consisted of nine 50-caliber Model 1934 guns in three triple turrets; two turrets were placed forward in a superfiring arrangement and the third was located aft.Her secondary anti-surface armament would have consisted of twelve 55-caliber Model 1934/35 guns in four triple turrets amidships.These were to be supplemented by four 40-caliber Model 1891/92 guns in single mounts; these guns were old weapons and were primarily intended to fire star shells.