	To coincide with the introduction of the new , a new AEW system was sought – initially a number of proposals were raised, as it was unclear what type of ship the new carrier would be. Once it was confirmed that would be a STOVL type ship, it was clear that either a new helicopter based system, or a system based around a STOVL fixed-wing aircraft, such as the V-22 Osprey, would be required. It was eventually decided that a new, palletised system named "Crowsnest" would be operated from the Royal Navy's existing Merlin helicopters, to be operational by 2019.