Supermarine S.6B - Operational History

Operational History

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. The aircraft were: S.5 N219, second at Venice in 1927, S.5 N220, winner at Venice in 1927, S.6A N247, that won at Calshot in 1929, S.6A N248, disqualified at Calshot in 1929, alongside the new and untested S.6Bs, S1595 and S1596.

The improved aircraft was designated the Supermarine S.6B to differentiate the variant from the S.6A. The British plan for the Schneider contest was to have S1595 fly the course alone and if its speed was not high enough, or it encountered mechanical failure, then the more proven S.6A N248 would fly the course. If both S1595 and N248 failed in their attempts, N247 held in reserve would be used. The S.6B S1596 was then to attempt the World Air Speed Record. During practice, N247 was destroyed in a fatal take off accident, precluding any other plans with only the two S.6Bs and the surviving S.6 prepared for the final Schneider run.

The winning Schneider flight was piloted by Flt. Lt. John N. Boothman in aircraft serial number S1595 at a speed of 340.08 mph (547.19 km/h), flying seven perfect laps of the triangular course over the Solent, between the Isle of Wight and the British mainland. Seventeen days later, Flt Lt. George Stainforth in S.6B serial S1596 broke the world air speed record reaching 407.5 mph (655.67 km/h).

The S.6B is hailed as giving the impetus to the development of the Supermarine Spitfire and the Rolls-Royce Merlin engine.