Project leaders believe lessons from the first ship will make sure HMS Prince of Wales is ready "swiftly".
Captain Ian Groom said improvements have been made since HMS Queen Elizabeth started sea trials:
"We optimised systems and learned how things could be improved both in terms of the systems and also the order in which you build things to make it more efficient and we're drawing those lessons into Prince of Wales so that we can build it as swiftly as possible to the highest quality.
"The reason we need two ships is to make sure that one is always available at very high readiness to provide choice to the government.
"That choice ranges from hard military power, delivering carrier strike, right down to humanitarian aid or promoting UK trade and industry.
"HMS Queen Elizabeth is there now and once HMS Prince of Wales comes into service then the two ships will work side-by-side ensuring one is always available to be used and the second one will be at high readiness and conducting training and maintenance.
"The ships will leapfrog one another through those roles and that is what continuous carrier availability provides."