O.Thetford, P.Gray German Aircraft of the First World War (Putnam)
Although actually a pre-war design of 1914, twenty-seven aeroplanes of this type were supplied to the German Navy for reconnaissance and general duties. The crude, dinghy-like appearance of the floats may be noted. Engine, 150 h.p. Benz Bz III. Span, 16.5 m. (54 ft. 1 1/3 in.). Length 9.4 m (30 ft. 10 1/8 in.). Area, 57.85 sq.m. (625 sq.ft.). Weights: Empty, 1,200 kg (2,640 lb.). Loaded, 1,830 kg. (4,026 lb.). Speed, 90 km.hr. (56.25 m.p.h )
C.Owers Hansa-Brandenburg Aircraft of WWI Vol.2: Biplane Seaplanes (A Centennial Perspective on Great War Airplanes 18)
The Brandenburg W was a three-bay, two-seat floatplane with the pilot occupying the rear cockpit. The Type W, Heinkel's first seaplane design for Brandenburg, had been designed pre-war as a racing machine.(23) Previously the races had taken place on inland lakes. In 1912, an attempt had been made to have the race on the open sea; however, even the calm Baltic was too much for the aeroplane structures of the day, and, despite the wish of the Navy to hold the contest off the coast of the Baltic or the North Sea, the 1913 race was held on Lake Constance as the aeroplane manufacturers stated that they could not design types to meet the conditions to be expected on the high seas. In 1914 the race was going to again be attempted on the open sea as the Ostseeflug Warnemunde (Flight over the Baltic Sea at Warnemunde). Heinkel was sure he could develop a seaworthy floatplane using the Albatros B.II as the basis for the design. According to his autobiography Heinkel designed the machine in eight weeks. The Type W was at Warnemunde together with 26 other seaplanes for the competition as the Navy had promised a small contract for the successful seaplanes. AEG, Ago, Albatros, Aviatik, Brandenburg, Friedrichshafen, and Rumpler had entered aircraft in the competition. The commencement of the war meant the competition was abandoned. All 26 aeroplanes were impressed into German Navy service.
Of conventional construction this three-bay biplane was marked by its crude floats. These were 4.850 m long and 0.900 m wide with a single step. The wings had dihedral and a slight sweep-back. The 150-hp Benz Bz.II(24) engine was exposed with Hazet
side radiators mounted under the forward cockpit. The rectangular fuselage tapered to a vertical knife edge. An Avro type comma shaped rudder and tail float completed the fuselage.
After testing the prototype, the German Navy ordered a total of 23 machines as listed above. The type performed general duties and reconnaissance work.
(23) Although Heinkel's autobiography indicates it was a race, it appears that the contest was more towards a set of conditions for performance on the water and in the air.
(24) Gray &Thetford record the 150-hp Bz.III as the type's engine.
Brandenburg W Specifications
Source Typenschau Gray & Thetford Branden. 3-View
Dimensions in m
Span, m 10.70 10.700 10.700
Length, m 10.24 10.240 10.130
Wing Area 57.65 m2 57.85 m2
Empty Wt., kg 1,200 1,200 1,200
Loaded Wt., kg 1,830 1,830 1,830
Speed in km/hr 90 90
Motor 150-hp Maybach 150-hp Benz Bz.III 150-hp Benz
The Brandenburg W Production
Marine Numbers Engine Delivered Notes
57 - 58 150-hp Benz Dec 1914 57 was ex-Ostseeflug Nr.26. 58 was ex-Ostseeflug Nr.25 and was converted into a landplane 21 October 1914.
71 - 72 150-hp Benz Listed as Brandenburg in Atlas &. Typenschau but identified as Ago designs by P.M. Grosz.
116 140 hp Argus Listed as Brandenburg in Typenschau but Lohner according to P.M. Grosz
231 - 235 Bz.III Jun-Jul 1915 Class BFT.
260 - 263 Bz.III Jan 1915 - Feb 1916 Class B.
264 - 273 Mb.III Class B. 269 was captured by the Russians near Schlock.
422 - 423 Bz.III Aug-Sep 1915
484 Bz.III Listed as Brandenburg by Typenschau but Lohner Type T by P.M. Grosz.