 While modification with a different propeller and attempts to reduce drag did improve performance, the Fairey III was preferred, being ordered into production in versions powered by both the Maori and Eagle engines, with only the first two prototype Short aircraft being built.In May 1919, Shorts modified the second prototype with an Eagle engine salvaged from the modified Short N.1B Shirl "Shamrock", which had crashed during an attempt to cross the Atlantic, the revised aircraft showing greatly improved climb rate but with speed only increased by 8 mph (13 km/h).The Maori was reinstated, and the second prototype delivered to the Royal Air Force in January 1920.