Everything needs to be seen & judged in right perspctive. If an AC hit by a cruise missile sinks, we lose crores of rupees worth of military assets, not to speak of human lives which can not be made good in a decade. If a missile hits an island in A&N the damage is not that serious. Besides, floating airbases are meant for international super-cops like US which has to project power far from their shores without bothering about counter-attack. Can any nation dare hit an US vessel? Even Russia, which has all the technology at its command maintains just one AC, because it doesn't need to do policing around the world. Italy has two small ACs, Britain, France one each but they are part of overall NATO assets. Btw, AC is more like a white elephant for a 3rd world country like ours