Why did the Royal Navy commission engines such as the Griffon, and how did radial engines compare with liquid-cooled types?
Short answerLiquid-cooled engines offered greater power and efficiency, and single-engine carrier aircraft made high output per engine especially important to the Royal Navy.
NotesThe Fleet Air Arm's carrier constraints differed from the RAF's ability to add engines to larger bombers. A carrier force relying mainly on single-engine aircraft could not simply move to twin- or four-engine types. It therefore needed more power from each engine. The requirement tied engine development directly to the physical and operational limits of carrier aviation, while land-based bomber forces could increase total power by enlarging the airframe and adding engines.