 Complete the following phrase:  The newer designs of 12-inch gun mounting had a considerably higher rate of fire, removing the advantage previously enjoyed by smaller calibres. In 1895, a 12-inch gun might have fired one round every four minutes; by 1902, two rounds per minute was usual. In October 1903, the Italian naval architect Vittorio Cuniberti published a paper in Janes Fighting Ships entitled An Ideal Battleship for the British Navy, which called for a 17,000-ton ship carrying a main armament of twelve 12-inch guns, protected by armour 12 inches thick, and having a speed of 24 knots 28 mph44 kmh. Cunibertis ideawhich he had already proposed to his own navy, the Regia Marinawas to make use of the high rate of fire of new 12-inch guns to produce devastating rapid fire from heavy guns to replace the hail of fire from lighter weapons. Something similar lay behind the Japanese move towards heavier guns; at 