With Royal Navy Lieutenant Commander John Cyril Porte as Chief Test Pilot, development and testing of the two prototypes proceeded rapidly, despite the inevitable surprises and teething troubles inherent in new engines, hull and fuselage.
It did, however, provide the inspiration for John Porte of the Seaplane Experimental Station to build a massive five-engined flying boat of similar layout, the Felixstowe Fury.
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The model was purchased in small numbers by foreign clients, and Deperdussin aircraft were also built at Highgate in London by the British Deperdussin Company, run by D Lawrence Santoni and John Cyril Porte.