answers: 2020
context: for £51 million. In October 2013 the Ministry of Defence announced that from 1 April 2014 the ship's homeport would change from HMNB Portsmouth to HMNB Devonport, the location of the Hydrography and Meteorology Centre of Specialisation and where the Royal Navy's other survey ships are based. She was commissioned into the Navy on 23 June 2011 as HMS "Protector". The commissioning ceremony was held on the 50th anniversary of the date that the Antarctic Treaty came into force. During September 2011, "Protector" embarked on operational sea training in preparation for her first deployment in November. In February 2012, after </s> Lightning, tiltrotor aircraft such as the V-22 Osprey, or aircraft that do not require either catapult-assisted take-off or arrested recovery. With the retirement of the Harrier GR7/9 in 2010, there remained no carrier-capable fixed-wing aircraft available to the Royal Navy or Royal Air Force. Their expected replacement is the Lockheed Martin F-35 Lightning II. As originally intended, the ships will carry the STOVL version, the F-35B. The aircraft will be flown by pilots from the Fleet Air Arm and the Royal Air Force. The aircraft are expected to begin trials flying from "Queen Elizabeth" in 2018 with a carrier air </s> billion, or over £270 million per F-35. Queen Elizabeth-class aircraft carrier The "Queen Elizabeth" class is a class of two aircraft carriers of the United Kingdom's Royal Navy. The lead ship, , was named on 4 July 2014, in honour of , 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, , 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
question: when does hms queen elizabeth come into service