 The increase in power, however, disappointed in that there was only a marginal speed improvement.The obsolete 40 mm/39 pom-pom anti-aircraft guns were finally discontinued, being replaced by extra machine guns; otherwise armament was unchanged.Significant upgrades were made to the weapons systems of the two ships that survived Matapan, similar to those made to the "Maestrale"s. One torpedo tube mounting was replaced by two /54 guns; cannon, a 120 mm star-shell gun and depth charge throwers were also installed.