"Vittorio Veneto"s main armament 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 consisted of twelve /55 Model 1934/35 guns in four triple turrets placed at the corners of her superstructure. These were supplemented by four /40 Model 1891/92 guns in single mounts; these guns were old weapons and were primarily intended to fire star shells. "Vittorio Veneto" was equipped with an anti-aircraft battery that comprised twelve /53 Model 1939 guns in single mounts, twenty Cannone-Mitragliera da 37/54 (Breda) /54 guns in eight twin and four single mounts, and sixteen Breda Model 35 /65 guns in eight twin mounts. EC 3 ter Gufo radar, which could detect surface targets at a range of and aircraft at , was installed in July 1943.