Hansa-Brandenburg FB

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Hansa-Brandenburg - C.I - 1915 - Германия Hansa-Brandenburg - LW - 1915 - Германия

Страна: Германия

Год: 1915

Варианты

Hansa-Brandenburg - FB - 1915 - Германия
Hansa-Brandenburg - W.13 - 1916 - Германия

O.Thetford, P.Gray German Aircraft of the First World War (Putnam)

Brandenburg FB 1915
Only six examples of this, the first Brandenburg flying-boat, were supplied to the German Navy, which was not enthusiastic about flying-boats. The Austrian Navy, on the other hand, favoured this type and used it in the Adriatic with considerable success. Engine, 165 h.p. Austro-Daimler, Span, 16.0 m. (52 ft. 6 in.). Length, 10.105 m. (33 ft. 1 7/8 in.). Area, 46.0 sq.m. (497 sq.ft.). Weights: Empty, 1,140 kg. (2,508 lb.). Loaded, 1,620 kg. (3,564 lb.). Speed, 140 km.hr. (87.5 m.p.h.). Climb, 1,000 m. (3,280 ft.) in 8.5 min. Armament, one Parabellum machine-gun.

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C.Owers Hansa-Brandenburg Aircraft of WWI Vol.2: Biplane Seaplanes (A Centennial Perspective on Great War Airplanes 18)

Type FB

   The FB was Brandenburg and Heinkel's first flying boat and was used with success by the Austro-Hungarian Navy in the Adriatic. The German Navy was not an enthusiastic supporter of the flying boat and preferred floatplanes; however, they ordered six of the Class C flying boats (MN 511-516). The FB was a large machine with a crew of two or three, two in the main cockpit back in line with the wings while the observer in the bow cockpit had a Parabellum machine gun for defence. The upper wing had a large overhang that was supported by an additional pair of struts that came from the base of the interplane struts. The square tipped planes were swept back and staggered. The single 165-hp Austro-Daimler engine was mounted in pusher configuration supported by a system of V-struts. The rudder was rhomboidal in shape and mounted half below and half above the tailplane. The tailplane was suspended above the hull by a two forward struts and the rudder post. A triangular fin was mounted on top of the tailplane. The elevator was in two pieces. Small floats were suspended under the lower wing.
   Designed for maritime patrol work, they were known as Lohner flying boats in the German Navy.
   FB boat MN 513 was based at Angernsee Seeflugstation where it was used with a number of Friedrichshafen FF33 floatplanes in attacks against the Russians. MN 513, together with Friedrichshafen MN 659, was involved in the shooting down of a Russian M.9 flying boat on 4 July 1916. It appears that it was the only Brandenburg flying boat operated by the station that also operated the Brandenburg GW torpedo aircraft.
   Ltn.d.RMA Friedrich Christiansen flew an FB, MN 516, at Zeebrugge that he named Klar Kimming and this was painted on the bow. The FB could operate in the winter when snow and ice prevented other air activity, the FB boats patrolling the areas where the German minesweepers conducted an endless campaign in trying to keep channels open to allow U-boats access to the North Sea. In a May 1917 return of aircraft all six of the FB boats were still in German Naval service.
   The kuk Kriegsmarine ordered an FB from Brandenburg that was delivered to Pola and received the number K184. It was almost identical with the German prototype MN 511.(2) The type was ordered from UFAG after a number of modifications were carried out to suit the Navy's requirements. The outer parallel interplane struts supporting the wing overhang were replaced by a vee-strut. The fin and rudder were replaced by a completely new design that was connected to the top of the hull. The engine was now a 175-hp Rapp with a different radiator built in Austro-Hungary. The UFAG version could carry a bomb load up to 200 kg.
   The type was ordered from UFAG in seven batches commencing with K168 - K175 ordered before the delivery of the German-built K184. The type had a good performance and proved popular. A second batch, K176 - K173, was ordered on 28 July 1917. K233 saw further modifications introduced with a new tailplane and more powerful engines. The last batch, K251 - K262, was never delivered.
   K222 was captured off Brindisi on 11 August 1917. The machine was described as a "Capa Flying Boat"(3) and was equipped with a 160-hp Austro-Daimler engine No. 7139. The pilot stated that the "engine gives about 200 hp." Two magnetos were fitted but were thrown overboard when capture was certain. The propeller was of ash and mahogany with alternate laminations (diameter 275, pitch 210).
   Two main fuel tanks were located in the hull under the centre section and occupied the full breadth of the boat. A gravity/emergency tank was let into the upper wing centre section. The pilot stated that the machine had an endurance of six hours and a speed of 150 km/hr.
   The front cockpit had a typical German circular gun mounting. "To assist the observer to climb from beside the pilot to the gunner's seat, a strong handle is fitted in the middle of the boat and half of the windscreen in front of the observer is detachable."
   Bombs were carried on the sides of the hull under the planes. "The pilot stated he carried one 150-kg bomb on the port side, and one 50-kg bomb and one 25-kg bomb on the starboard side." The machine gun and ammunition and Very pistol had been thrown overboard.
   The main planes had been torn from the boat and were very badly crumpled up. The wingtip floats were of unusual shape "the nose being covered with paper-mache." The interplane struts were large steel tubes streamlined by a light wooden framework covered with fabric. The struts holding the engine bearers were streamlined by three-ply wood fairings. "The fabric used is reported to be of excellent quality. The lack of copper was very noticeable."(4)
   A total of 66 Brandenburg (UFAG) FB flying boats entered service with the kuk Kriegsmarine. Although this may seem a small number when compared with the attrition of machines involved in the land war, this was a substantial number for a fighting flying boat.
   The UFAG-built K248 was one of two K-boats taken to the US after the war. K248 received Bureau No. A-5807. Its condition merited a Trouble Report of 16 September 1920, but the problems with the boat are not recorded. It was shipped to the Naval Aircraft Factory (NAF) on 20 December 1920, arriving in the following January. On 11 September 1920, the NAF reported that there was a hole about one foot square staved in the forward part of the bottom of the hull. The forward bulkhead was stove in. Ribs were broken in both upper and lower left wings. The cause of the trouble was not clearly evident. It was requested that it be repaired at the NAF. On completion of repairs it was to be sent to Hampton Roads for trials. It was flown to Anacostia in March 1921 before being shipped to Hampton Roads later that month. After trials, if any, it was placed into storage at Hampton Roads where it was subject to a Trouble Report of 6 February 1924. While it was reported to be in a fair condition, it was disassembled with the engine and instruments removed. Experiments and study were now completed with the machine in storage awaiting disposition. It was considered to be of no further use and it was recommended that the hull and wings be burnt but the engine and instruments be salvaged. A-5087 was stricken on 15 March 1924. No thought was given to preserving one of these flying boats.

(2) G. Haddow speculates that K184 may well have been MN 511 given the German Navy's little liking for flying boats.
(3) Allied intelligence was usually very well informed; however, it appears that in this case the nick-name for the Brandenburg was accepted as the official name for the flying boat. In Jane's All the Worlds Aircraft for 1920 K222 is described as a "Kappa"flying boat.
(4) UKNA AIR1/716/27/19/32.

Kuk Kriegsmarine Type FB (UFAG Type K) Orders & Production
Serials Delivered Notes
K184 9 July 1916 From Brandenburg, same as German prototype except for wingtip floats.
K168 - K175 Autumn 1916 175-hp Rapp.
K176 - K183 October-December 1916 175-hp Rapp. K177 - K179 160-hp Mercedes
W.20 Experimental submarine borne flying boat.
K200 Serial assigned to Weichmann flying boat. Incorrectly marked?
K203 - K212 December 1916 - January 1917 185-hp Austro-Daimler.
K213 - K224 January-February 1917 160-hp Austro-Daimler.
K225 - K232 May-June 1917 165-hp Austro-Daimler.
K233 - K247 August 1918 200-hp Hiero. Redesigned tailplane.
K248 - K250 230-hp Hiero. K248 to USA post-war.
K251 - K262 Order for 12 in September 1918, never delivered.


Brandenburg FB Specifications
Source Typenschau Brandenburg* Gray & Thetford Brandenburg SVK MN 511-516 Brandenburg G. Haddow Data UFAG
Span, m 16.00/10.00 16.0 16.000/10.000 16
Chord, Upper, m 1.90 - 1.900 -
Chord, Lower, m 1.83 - - -
Length, m 10.18 10.105 10.200 10.185
Height, m - - 3.600 -
Areas in m2
Wings 16.00/10.00 16.0 16.000/10.000 16
Ailerons 1.90 - 1.900 -
Elevators 1.83 - - -
Rudder 10.18 10.105 10.200 10.185
Weights in kg
Empty 1,140 1,140 1,033 1,100
Loaded 1,620 1,620 1,693 1,680
Performance
Speed in km/hr 140 140 - 155
Time to 800 m 8.5/9.5 minutes - 9.5 minutes -
Time to 1000 m 12.5 minutes 8.5 minutes 12.5 minutes 7.3 minutes
Time to 1500 m 16 minutes - 16 minutes -
Time to 2000 m 22 minutes - 22 minutes -
Endurance - - - 6 hours
Motor 100-hp Mercedes 100-hp Mercedes 100-hp Mercedes See Production
* The Typenschau does not list the UFAG-modified Type FB.

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Описание:Description:

O.Thetford, P.Gray German Aircraft of the First World War (Putnam)
C.Owers Hansa-Brandenburg Aircraft of WWI Vol.2: Biplane Seaplanes (A Centennial Perspective on Great War Airplanes 18)
M.Dusing German Aviation Industry in WWI. Volume 1 (A Centennial Perspective on Great War Airplanes 84)
E.Hauke, W.Schroeder, B.Totschinger Die Flugzeuge der k.u.k. Luftfahrtruppe und Seeflieger 1914-1918

C.Owers - Hansa-Brandenburg Aircraft of WWI. Volume 2 - Biplane Seaplanes /Centennial Perspective/ (18)

Brandenburg FB K170: UFAG built with Rapp 175-hp motor, taken on charge 20.03.17. Written off due enemy action 03.10.17
C.Owers - Hansa-Brandenburg Aircraft of WWI. Volume 2 - Biplane Seaplanes /Centennial Perspective/ (18)

Brandenburg FB K175: Taken on charge 02-04-17. Fate unknown.
C.Owers - Hansa-Brandenburg Aircraft of WWI. Volume 2 - Biplane Seaplanes /Centennial Perspective/ (18)

Brandenburg FB K216: Powered by 185-hp Austro-Daimler; it survived from April 1917 to August 1918 when its age and condition saw it written off.
C.Owers - Hansa-Brandenburg Aircraft of WWI. Volume 2 - Biplane Seaplanes /Centennial Perspective/ (18)

Brandenburg FB K233 of the kuk Kriegsmarine: 200-hp Hiero model accepted on 31.08.18, fate unknown.

M.Dusing - German Aviation Industry in WWI. Volume 1 /Centennial Perspective/ (84)

Hansa-Brandenburg FB Flying boat #511.
The MN has been remarked in the usual size and style on the prototype FB seen here at the Gotha works.
C.Owers - Hansa-Brandenburg Aircraft of WWI. Volume 2 - Biplane Seaplanes /Centennial Perspective/ (18)

Brandenburg FB (1915/16)
O.Thetford, P.Gray - German Aircraft of the First World War /Putnam/

Brandenburg FB 1915
C.Owers - Hansa-Brandenburg Aircraft of WWI. Volume 2 - Biplane Seaplanes /Centennial Perspective/ (18)

Further views of prototype Brandenburg FB MN 511. These views show the prototype as first built, with small rudder without horn balance.
M.Dusing - German Aviation Industry in WWI. Volume 1 /Centennial Perspective/ (84)

The Brandenburg FB was Brandenburg's first flying boat, developed in 1916.
C.Owers - Hansa-Brandenburg Aircraft of WWI. Volume 2 - Biplane Seaplanes /Centennial Perspective/ (18)

The prototype Brandenburg FB displays the MN 511 in small numerals on the rear of the hull. This photograph is thought to show the machine after the rudder was modified to add a horn balance, (via AHT AL0354-078)
The Hansa-Brandenburg FB is yet another example of buying small numbers of many types. In this case, the navy purchased six only of this 150hp Benz Bz III powered two seat flying boat reconnaissance scout. Essentially a German-built version of the Lohner scouting flying boats, the performance details of the FB are lost, but its overall capability must have been close to that of the Lohner Type L.
C.Owers - Hansa-Brandenburg Aircraft of WWI. Volume 2 - Biplane Seaplanes /Centennial Perspective/ (18)

The MN of this Brandenburg FB appears to be 512. Note the absence of the rudder cross.
M.Schmeelke - "Torpedo Los!" /Aeronaut/

Officer and sailor posing with MN 513. Note the position of the cross on the hull.
Brandenburg FB 513 was assigned to the fighter group an Angernsee to escort torpedo planes.
M.Schmeelke - "Torpedo Los!" /Aeronaut/

Several aircraft at Angernsee during the Summer of 1916. At the right is FF33E No. 659, in which Ltn.zS. Rahtz (p) and Flgzgobmtr. Stolle (o) attacked Runo on 17 August 1916, just subsequent to the Russian night raid on Angernsee. Third from the left is Hansa-Brandenburg flying boat No. 513, frequently flown by Flgmr. Thiedemann (p)/Flgmt. Jacob (o), who were credited with one confirmed victory during the Summer of 1916.

Другие самолёты на фотографии: Friedrichshafen FF33 - Германия - 1915
M.Schmeelke - "Torpedo Los!" /Aeronaut/

A closer look at Hansa-Brandenburg flying boat No. 513 (center aircraft; enlargement of photo facing page).

Другие самолёты на фотографии: Friedrichshafen FF33 - Германия - 1915
C.Owers - Hansa-Brandenburg Aircraft of WWI. Volume 2 - Biplane Seaplanes /Centennial Perspective/ (18)

Brandenburg FB MN 514 in water with Friedrichshafen FF33 MN 452 in background.

Другие самолёты на фотографии: Friedrichshafen FF33 - Германия - 1915
C.Owers - Hansa-Brandenburg Aircraft of WWI. Volume 2 - Biplane Seaplanes /Centennial Perspective/ (18)

Brandenburg FB MN 514 taxiing.
C.Owers - Hansa-Brandenburg Aircraft of WWI. Volume 2 - Biplane Seaplanes /Centennial Perspective/ (18)

Ltn.d.RMA Friedrich Christiansen's Brandenburg FB MN 516 Klar Kimming on the crane at Zeebrugge. Note the canvas bag on the Parabellum machine gun to catch spent shells and prevent them being carried back into the propeller. (via AHT AL0444-232 from the album of F.Christiansen)
C.Owers - Hansa-Brandenburg Aircraft of WWI. Volume 2 - Biplane Seaplanes /Centennial Perspective/ (18)

Officers Lehr (left) and Bachmann pose with a Brandenburg FB. Note the emblem and the name ERNY painted on the nose of the hull. This FB has a cross to the forward fuselage. A close examination of the photograph reveals much detail.
C.Owers - Hansa-Brandenburg Aircraft of WWI. Volume 2 - Biplane Seaplanes /Centennial Perspective/ (18)

This Brandenburg FB has a full crew but is unarmed.
C.Owers - Hansa-Brandenburg Aircraft of WWI. Volume 1 - Landplanes /Centennial Perspective/ (17)

A typical Norderney winter scene with a Brandenburg FB hiding at the waterline with Gotha WD7 MN 674 at left and Brandenburg NW (Gotha WD12 ???) floatplanes

Другие самолёты на фотографии: Gotha WD.12/WD.13/WD.15 - Германия - 1917 Gotha WD.7 - Германия - 1916
E.Hauke, W.Schroeder, B.Totschinger - Die Flugzeuge der k.u.k. Luftfahrtruppe und Seeflieger 1914-1918

Seeflugzeug K 170, Type Brandenburg K, Seeflugstation Puntisella. Sommer 1917
E.Hauke, W.Schroeder, B.Totschinger - Die Flugzeuge der k.u.k. Luftfahrtruppe und Seeflieger 1914-1918

Seeflugzeug K 184. Type Brandenburg FB. Vorbeiflug in Pola, 1916б als Abwehrflugzeug mit starrem MG-Einbau, einsitzig geflogen
C.Owers - Hansa-Brandenburg Aircraft of WWI. Volume 2 - Biplane Seaplanes /Centennial Perspective/ (18)

K184 in flight. This is the Brandenburg-constructed FB that was delivered to the kuk Kriegsmarine. It is almost exactly the same as the German prototype.
C.Owers - Hansa-Brandenburg Aircraft of WWI. Volume 2 - Biplane Seaplanes /Centennial Perspective/ (18)

UFAG constructed a modified version of the FB for the kuk Kriegsmarine. K170 of the first batch photographed at Puntisella Seeflugstation in the Summer of 1917, displays the vee-struts that supported the wing overhang rather than the parallel struts of the German-built FB boats. The fin is now built to attach directly to the hull. While defending Pola from air attack, K170 was shot down on 2 October 1917. The crew of Lucie and Achatz were both killed.
C.Owers - Hansa-Brandenburg Aircraft of WWI. Volume 2 - Biplane Seaplanes /Centennial Perspective/ (18)

K175 was the last boat of the first order for eight. These were delivered in the autumn of 1916. K175 was taken into service 2 April 1917 at Sabencico. This machine survived to receive late-war style national markings.
C.Owers - Hansa-Brandenburg Aircraft of WWI. Volume 2 - Biplane Seaplanes /Centennial Perspective/ (18)

The sad remains of K177 being recovered after the boat crashed during an emergency landing at Durazzo on 7 April 1918.
C.Owers - Hansa-Brandenburg Aircraft of WWI. Volume 2 - Biplane Seaplanes /Centennial Perspective/ (18)

K178 with its intrepid crew. Note the large bag for spent shells on the Schwarzlose machine gun.The extreme inboard marking of the lower wing crosses with their black outline is well displayed. K178 entered service at Kumbor on 1 December 1916 and was powered by a 160-hp Mercedes engine.
C.Owers - Hansa-Brandenburg Aircraft of WWI. Volume 2 - Biplane Seaplanes /Centennial Perspective/ (18)

A poor quality photograph of K178 on the water; however, the machine was crewed by Frglt. Ottakar Holoubeck, Lt.d.Res. Anton Csonka and an unknown crewman, who claimed a submarine sunk 25 miles west of Rondoni after their attack of 3 June 1918.
E.Hauke, W.Schroeder, B.Totschinger - Die Flugzeuge der k.u.k. Luftfahrtruppe und Seeflieger 1914-1918

Seeflugzeug K 203, Type Brandenburg K. Seeflugstation Pola, Frühjahr 1917, ohne obere Rumpfabdeckung
Seeflugzeug K 203, Type Brandenburg K. Seeflugstation Pola, весна 1917 г., без верхней обшивки фюзеляжа
C.Owers - Hansa-Brandenburg Aircraft of WWI. Volume 2 - Biplane Seaplanes /Centennial Perspective/ (18)

K203 was the first machine of the third batch (K203 - K212) ordered from UFAG on 24 October 1916. The upper hull decking has been removed for maintenance. The frame on the hull under the lower wing is a bomb rack. K203 was lost due to enemy action south of the Piave River on 14 August 1917.
C.Owers - Hansa-Brandenburg Aircraft of WWI. Volume 2 - Biplane Seaplanes /Centennial Perspective/ (18)

The crew of K206 display bombs that the machine would carry. The UFAG K boats were active in bombing Italian cities and shipping centers.
E.Hauke, W.Schroeder, B.Totschinger - Die Flugzeuge der k.u.k. Luftfahrtruppe und Seeflieger 1914-1918

Seeflugzeug K 207, Type Brandenburg K, Marinestützpunkt Brindisi. Februar 1918; nach der Desertion von Sfr i.d.Res. Anton Sesan, FIQuMst Anton Grabowiecky und FIQuMst Stonavvsky am 3. Februar 1918 von italienischen und britischen Piloten geflogen
Гидросамолет К 207, тип Brandenburg K, военно-морская база Бриндизи. Февраль 1918 г.; после дезертирства Sfr i.d.Res. Антон Сезан, Антон Грабовецкий и Ф. Стонаввски на борту итальянских и британских пилотов 3 февраля 1918 года.
C.Owers - Hansa-Brandenburg Aircraft of WWI. Volume 3 - Monoplane Seaplanes /Centennial Perspective/ (19)

Brandenburg FB K207
(???) Brandenburg W.13 K307 was forced down on 27 September 1917 by engine failure due to a cracked water jacket. The crew was rescued - and captured - by an Italian MTB that towed K307 back to Brindisi. This photo appears to have been taken from the MTB while originally approaching the aircraft. Embarrassingly, K307 had been in a formation of seven KuK flying boats that set out to bomb Brindisi. Frglt. Emanuel Lerch and Fhr.d.Res. Adalbert Lenti were the captured crew.
E.Hauke, W.Schroeder, B.Totschinger - Die Flugzeuge der k.u.k. Luftfahrtruppe und Seeflieger 1914-1918

Seeflugzeug K 210, Type Brandenburg K, Seeflugstation Triest, 3. April 1917 vor dem Start, Besatzung Skdt Ferrucio Maria Vio (Pilot) und Fhr i.d.Res. Koloman Kolos
Гидросамолет К 210, тип Brandenburg K, морская летная станция Триест, 3 апреля 1917 г. перед взлетом, экипаж Skdt Ferrucio Maria Vio (пилот) и Fhr i.d.Res. Коломан Колос
C.Owers - Hansa-Brandenburg Aircraft of WWI. Volume 2 - Biplane Seaplanes /Centennial Perspective/ (18)

K216 displays the national markings on the lower surface of the upper wing. This machine was from the fourth batch (K213 - K224) ordered on 2 December 1916. With an 185-hp Austro-Daimler engine, K216 was accepted for service at Pola on 23 August 1917, but was written off six days later.
C.Owers - Hansa-Brandenburg Aircraft of WWI. Volume 2 - Biplane Seaplanes /Centennial Perspective/ (18)

This UFAG-built Brandenburg FB suspended from the crane appears to be K221.
C.Owers - Hansa-Brandenburg Aircraft of WWI. Volume 2 - Biplane Seaplanes /Centennial Perspective/ (18)

The remains of K222.This boat entered service on 8 April 1917 at Kumbor.The crew of Engel and Kriewallner were captured by the Italians when they were forced down following an attack on Brindisi on 11 August 1917. Found by an Italian MTB, the crew were made POWs and the flying boat was towed back to Brindisi with the end result illustrated here.
C.Owers - Hansa-Brandenburg Aircraft of WWI. Volume 2 - Biplane Seaplanes /Centennial Perspective/ (18)

Construction of Brandenburg FB boats at the UFAG factory. K223 can be identified. Note how the hulls are completed working from right to left.
E.Hauke, W.Schroeder, B.Totschinger - Die Flugzeuge der k.u.k. Luftfahrtruppe und Seeflieger 1914-1918

K225 on the water. K225 was the first aircraft of the batch of eight ordered on 30 December 1916, and delivered in May to June 1917.
Seeflugzeug K 225. Type Brandenburg K, einlaufend vor der Seeflugstation Triest, am Steuer Lschlt Banfield
C.Owers - Hansa-Brandenburg Aircraft of WWI. Volume 2 - Biplane Seaplanes /Centennial Perspective/ (18)

K225 has the national markings on the upper surface of the lower wing. This photograph shows well the tailplane divided into red-white-red segments. The engine was a 165-hp Austro-Daimler.
C.Owers - Hansa-Brandenburg Aircraft of WWI. Volume 2 - Biplane Seaplanes /Centennial Perspective/ (18)

The Italians recovered the remains of K228 after it was brought down during a night raid on Venice on 14 August 1917.
C.Owers - Hansa-Brandenburg Aircraft of WWI. Volume 2 - Biplane Seaplanes /Centennial Perspective/ (18)

K230 after crashing on a rocky beach on 31 August 1917, when taking off from Puntisella.This machine was from the batch K225 - K232.
J.Davilla - Italian Aviation in the First World War. Vol.1: Operations /Centennial Perspective/ (73)

Seeflugzeug K 231, Type Brandenburg K. Seeflugstation Kumbor, August 1917
With a wingspan of 'only' 16.3m (53.48ft) and an overall length of 12.2m (40.3ft), the Brandenburg FB seaplanes like 'K168' were known to the Anglo-Italians as 'small Kapas' - the W. 13s being called 'large Kapas'. They belonged to a family of flying boats first conceived in Germany by Ernst Heinkel for Hansa-Brandenburg and known as the Type FB. In Austria-Hungary these seaplanes were built by UFAG and known as the UFAG Type K; 'K231'came from the fifth UFAG-built batch and was powered by a 160-hp Austro-Daimler engine.
C.Owers - Hansa-Brandenburg Aircraft of WWI. Volume 2 - Biplane Seaplanes /Centennial Perspective/ (18)

Two views of K233, the first FB built by UFAG to have the 200-hp Hiero engine.The tail has been changed similar to the German examples of the FB. These photos were taken 31 August 1918.
J.Davilla - Italian Aviation in the First World War. Vol.1: Operations /Centennial Perspective/ (73)

The elegant lines of a 'Kapa' in flight. Mario Raguz
C.Owers - Hansa-Brandenburg Aircraft of WWI. Volume 2 - Biplane Seaplanes /Centennial Perspective/ (18)

UFAG-built K248 at Anacostia, 24 March 1921. This machine was reconditioned by the US Naval Aircraft Factory, Philadelphia, to bring it to flying condition. The modified tailplane of this batch is well shown. As Bureau No. A-5807 it was painted in the standard USN color scheme of US Navy grey overall with the star in circle national markings. To date it has not proved possible to unearth the USN report on this boat.
C.Owers - Hansa-Brandenburg Aircraft of WWI. Volume 2 - Biplane Seaplanes /Centennial Perspective/ (18)
C.Owers - Hansa-Brandenburg Aircraft of WWI. Volume 2 - Biplane Seaplanes /Centennial Perspective/ (18)

Two more views of UFAG-built K248 at Anacostia, 24 March 1921.
E.Hauke, W.Schroeder, B.Totschinger - Die Flugzeuge der k.u.k. Luftfahrtruppe und Seeflieger 1914-1918

Hiero Ba 34.000. 230 PS; die Abbildung zeigt den Einbau in ein Flugboot, Type Brandenburg K (K 248)
Hiero Ba 34.000. 230 л.с.; на снимке показана установка в летающую лодку типа Бранденбург К (К 248)