By the end of World War II, "Enterprise" had been considerably modified. Her final displacement was 32,060 tons and her final armament was 8 single 5-inch/38 caliber DP guns, 40 40 mm Bofors AA guns, 6 quad and 8 twin (replacing the ineffective 1.1"/75 caliber gun quad mounts which the "Yorktown" class had initially been fitted with) and 50 single 20 mm Oerlikon AA cannons. The "Yorktown"s had proved to be vulnerable to torpedoes, and while undergoing repairs at Bremerton, Washington, from July to October, 1943, "Enterprise" received an extensive refit, which included an anti-torpedo blister that significantly improved her underwater protection.