Were aircraft carriers relatively simple to build?

Were aircraft carriers relatively simple to build compared with battleships?

No; they needed less armour and avoided main-turret bottlenecks, but safe aviation-fuel integration and other carrier systems were technically demanding.

Aircraft carriers were not simple ships, although they avoided some of a battleship's worst industrial bottlenecks. They required less heavy armour plate and no enormous main-gun turrets, both difficult components to supply. In exchange, aviation-fuel distribution demanded careful integration so fuel did not remain in vulnerable lines after an attack. British concern over American escort-carrier systems, followed by American interest in British arrangements, illustrates how specialized and consequential that engineering could be.