AD Navyplane

The AD Navyplane was designed by the British Admiralty's Air Department as a reconnaissance aircraft for use during World War I. Performance of the prototype was so disappointing that plans to produce it were cancelled almost immediately.

The Navyplane was designed by the Admiralty's Harold Bolas with the assistance of R.J. Mitchell of Supermarine. It was a seaplane of unusual biplane configuration – the pilot and observer being seated in a streamlined nacelle mounted in the gap between the upper and lower sets of wings. The AR-1 rotary engine and a pusher propeller were installed behind them.

Tests of the Supermarine-built prototype commenced in August 1916 but soon proved seriously underpowered and unsatisfactory. The design was abandoned and the second prototype was never completed.

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