Lexington's eight-inch guns and the changing carrier role

Eight-inch guns offered a theoretical answer if a carrier met an enemy cruiser, but using them across the deck could halt flight operations and signalled that multiple layers of fleet defence had already failed. Their weight, magazine space and topweight were expensive burdens inherited from the ships' battlecruiser origins. The comparison also notes that these mountings lacked the elevation needed to make their supposed dual-purpose role practical. Carrier doctrine subsequently shifted from independent operation toward the carrier as both a protected and protective part of the battle fleet. The broader lesson is that a fleet's complementary aircraft, cruisers and escorts mattered more than giving every ship a weapon for every contingency.