The constraints of constructing a flight deck affect the role of a given carrier strongly, as <answer>they influence the weight, type, and configuration of the aircraft that may be launched</answer>. For example, assisted launch mechanisms are used primarily for heavy aircraft, especially those loaded with air-to-ground weapons. CATOBAR is most commonly used on USN supercarriers as it allows the deployment of heavy jets with full loadouts, especially on ground-attack missions. STOVL is used by other navies because it is cheaper to operate and still provides good deployment capability for fighter aircraft.
Why do the constraints of constructing a flight deck affect the role of a carrier?
they influence the weight, type, and configuration of the aircraft that may be launched