Why did the Italian Navy not build aircraft carriers before the war?
Short answerIt relied on land-based air cover and lacked naval aviation control, underestimating the value of a mobile airfield at sea.
NotesAir-force control of aviation and confidence in Mediterranean airfields discouraged Italian carrier construction. On paper, land-based aircraft seemed able to cover most places where the Regia Marina expected to fight. The flaw is endurance: those aircraft must spend time reaching the fleet, then depart to refuel and rearm, leaving gaps unless very large numbers are available. A carrier moves the airfield, maintenance, fuel, and weapons with the force, making it an infrastructure and logistics hub as much as a ship.