O.Thetford, P.Gray German Aircraft of the First World War (Putnam)
Friedrichshafen FF 43
This neat little single-seater was designed for seaplane station defence duties, but only a single machine (No. 749) was built. It was delivered in June 1916. Engine, 160 h.p. Mercedes D III. Span, 9.92 m. (32 ft. 6 5/8 in.). Length, 8.5 m. (27 ft. 10 3/4 in.). Height, 3.39 m. (11 ft. 1 1/2 in.). Area, 31 sq.m. (335 sq.ft.). Weights: Empty, 798 kg. (1,756 lb.). Loaded, 1,078 kg. (2,372 lb.). Speed, 163 km.hr. (101.875 m.p.h.). Climb, 1,000 m. (3,280 ft.) in 6 min., 2,000 m. (6,560 ft.) in 12 min. Armament, two Spandau machine-guns forward.
W.Green, G.Swanborough The Complete Book of Fighters
FRIEDRICHSHAFEN FF 46 (D I) Germany
In the summer of 1916, the German Navy ordered a variety of waterborne single-seat fighters for evaluation, one of these being the FF 43 twin-float single-bay biplane from the Manzell factory of the Flugzeugbau Friedrichshafen on 8 June 1916. Powered by a 160 hp Mercedes D III engine and armed with one synchronised 7,92-mm machine gun, the FF 43 was completed on 29 August 1916, and delivered to the Seeflugzeug Versuchs Kommando (Seaplane Testing Command) at Warnemunde for acceptance testing on 8 September. Sent to the Zeebrugge naval air station on 6 October for evaluation under operational conditions in the North Sea, the FF 43 was not accepted for production, being officially struck-off on 13 April 1917.
Max speed, 101 mph (163 km/h).
Time to 3,280 ft (1 000 m), 6.0 min, to 6,560 ft (2 000 m), 12.0 min.
Empty weight, 1,759 lb (798 kg).
Loaded weight, 2,377 lb (1078 kg).
Span, 32 ft 6 1/2 in (9,92 m).
Length, 28 ft 0 3/5 in (8,55 m).
Height, 10 ft 11 9/10 in (3,35 m).
Wing area, 333.69 sq ft (31,00 m2).
Flight, October 23, 1919.
SOME FRIEDRICHSHAFEN "MILESTONES"
"The F.F. 43
"THIS machine, which is shown in Figs. 24 and 25, was a single-seater fighter, very easy on the controls and quite fast and with a good climb. It also started from and alighted on the sea very easily. By way of armament it was fitted with one, sometimes two, fixed machine-guns. A characteristic feature of this type was that the pilot sat with his eyes on a level with the rear spar of the top plane, so that he could easily look either over or under the plane, which was a great advantage for fighting in the air.