US aircraft carrier built one after another, despite the fact that this kind of monstrous arms of roads and frankly outdated. No other country does not allow himself the content of this fleet. It is known that aircraft carriers are vulnerable even in normal operation http://bezumno.ru/news/43106-samye-znakovye-avarii-na-amerikanskih-avianoscah.html floating airfield with limited resource - a catapult takeoff and consistent - do not allow to solve the serious problem when opponents least average coastal defense and aviation. A typical example - Iran. All carriers are not taken together convinced the Persians to back down - and would have been sunk, reaching case before the war. COX conventional concrete strip. Cheap and cheerful.
Official explanation: None. Informal explanation: 1. Americans are stupid, they are used to in the second World War, aircraft carriers that are important, so still can not stop. Inertia. 2. Americans sawing loot, military tasks of little interest. (As if you can not cut the loot on submarines) ...
My assumption today carriers do have a certain handicap use. In the two-plus work ... But after the eruption ... But if "to know the date in advance", and all the boats pull in distant ports ... It will be a fantastic cell power trump card which will allow "the lease" with any surviving territory. Almost any. I recall the specifics of seismic is that predict survive Mozambique, the Philippines, Chile, Australia or impossible. Yes, without makeup aircraft carriers soon "lose shape." But it needed only once. And they will have a new base (if formed, of course).