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The Felixstowe Porte Baby was a British reconnaissance flying boat of the First World War first flying in 1916.
The Porte Baby was designed by John Cyril Porte at the Royal Naval Seaplane Experimental Station at Felixstowe, where the prototype was also built; ten additional aircraft were built by May, Harden and May of Southampton.
The Porte Baby was an unequal span, three bay biplane of wood and fabric construction, the hull being mounted below the lower wing. The engines, three Rolls-Royce Eagle VII of 325 hp (243 kW) each, were mounted between the wings; two in tractor configuration and the central one in pusher. The two pilots were in an enclosed cockpit but three gunners had open stations armed with machine guns.