Last of the line of Schneider Trophy racing seaplanes designed by R. J. Mitchell was the Supermarine S6B, two of which were built for the 1931 event. Withdrawal of opposing teams meant that the British merely had to fly over the course to win the Trophy outright, which they did averaging 340mph in S1595 illustrated. The same day, S1596 captured the world's Absolute Speed Record at 379mph.