It takes several years to build a carrier and bring it into operation, but developing nuclear propulsion for its next generation of warships would eventually give China more power to run advanced systems, such as electromagnetic launchers, radars and new technology weapons, Childs said.

“As well as obviating the need for the ship to refuel regularly and therefore giving it much greater range, nuclear power means that without the need to carry fuel oil for the ship there will be room aboard for fuel and weapons for its aircraft, extending their capabilities,” Childs said.