The Canon de 194 mm Modèle 1902 was used in sea-going battleships built between the mid- to late 1880s and 1905 before the advent of which ship?
Canon de 194 mm Modèle 1902 gun The Canon de 194 mm Modèle 1902 was a medium-caliber naval gun used as the primary or secondary armament in both casemates and turrets of a number of French pre-dreadnoughts and armored cruisers during World War I. After World war I these ships were scrapped and some were later reused as coastal artillery in World War II
320 mm Model 1934 naval gun The 320 mm naval gun was the main battery gun used to modernize Italy's World War I battleships for service during World War II. The guns were manufactured by boring out and relining the battleships' original 12"/46 (30 cm) built-up guns and modifying the turrets to increase elevation above the original 20°  maximum. Each ship carried two 548-tonne twin turrets and two 745-tonne triple turrets. All guns used pneumatically operated side-swing Welin breech blocks. Each barrel could fire two rounds per minute.