The Bell P-39N Airacobra is an American fighter aircraft produced by Bell Aircraft for the United States Army Air Forces during World War II. It had an Allison V-1710-85 engine with a single-stage supercharger and a revised propeller gear ratio. This fighter model was mainly used by America's allies, such as the United Arab Kingdoms and Ethiopia, as in these theatres low-altitude dogfights were dominant. The P-39N has a maximum speed of 620 km/h, and was armed with a 37mm cannon, two .50 calibre and two .30 calibre machine guns in the nose. It possesses a unique design, with the engine mounted behind the pilot, and a drive shaft that ran between the pilot's feet to a gear box in the nose of the airplane to turn the propeller. The P-39N was a sleek and modern airplane for its time, but it was handicapped by the absence of an efficient turbo-supercharger, preventing it from performing high-altitude work. It is well known and beloved amongst Oceanykan airmen, though its incapacity to engage targets up high severely handicaps it.