The Supermarine Southampton was the first in a series of successful flying boats designed by Supermarine's R.J. Mitchell and was the first one to be designed for the RAF after the First World War. Produced between 1924 and 1934 it entered into RAF service in 1925 and became the second longest serving (behind the Short Sunderland) and one of the most successful of the inter-war flying boats.
In an unusual move for the times, the Air Ministry...