 The two existing S.6s were re-designated as S.6As with new floats, added cooling areas and statically-balanced control surfaces.All four S.6s were brought up to a similar standard with nine Rolls-Royce R engines shared between them.Although the British team faced no competitors, the RAF High Speed Flight brought six Supermarine Schneider racers to Calshot Spit on Southampton Water for training and practice.