The Fairey Battle flying test-bed (K9370), modified to accommodate the experimental 2,240- h.p. Fairey P.24 Prince X-type, 24-cylinder liquid-cooled engine (twice the power of the normal Rolls-Royce Merlin-engined Battle) The P .24, driving a 6 blade contraprop, was developed from the 480-h.p. licence-built Curtiss D.12 (Fairey Felix) which powered the two- seat day bomber Fairey Fox of 1925. The Prince F.T.B. was first flown on 30th June 1939. After 100-hours test flying, it was crated and shipped to the Wright Field on 5th December 1941 exchanging R.A.F. camouflage and roundels for U.S.A.A.F. markings. The P.24 was intended for a version of the Barracuda. Increased range was permissible by shutting down one 12-cyl. Vee.
LN - Norwegian, so probably a Honningstad C5 Polar - there's another photo of LN-DBW at http://1000aircraftphotos.com/Contri...oates/3273.jpg - the tail looks similar, but the floatplane has a ventral vertical stabiliser - maybe to help counter the effect of the floats?
Linear Mode
