The Queen Elizabeth class is a class of two aircraft carriers of the United Kingdom's Royal Navy. The lead ship, HMS Queen Elizabeth, was named on 4 July 2014, in honour of Queen Elizabeth, a renowned World War I era super-dreadnought, which in turn was named for Elizabeth I. She was commissioned on 7 December 2017, with an initial operating capability expected in 2018. The second, HMS Prince of Wales, was launched on 21 December 2017, and is planned to be commissioned in 2020. At the NATO 2014 Wales summit, the Prime Minister David Cameron announced that the second carrier would be brought into service, ending years of uncertainty surrounding its future. This was confirmed by the November 2015 Government Strategic Defence Review, with both carriers entering service, one being available at any time.