Royal Air Force Calshot or more simply RAF Calshot was initially a seaplane and flying boat station, and latterly a Royal Air Force marine craft maintenance and training unit. It was located at the end of Calshot Spit in Southampton Water, Hampshire, England, at grid reference SU487024.
In the late 30s,Imperial Airways rented some of Supermarine's buildings at Hythe .for use as a maintenance base for the Empire flying boats.Regular services were established in March 1937 to the Middle East,and in June 37 to South and East Africa.On 8th July 1937 the first transatlantic proving flights were made by Short S.23 G-ADHM"Caledonia",and by a Pan American S-42A.
