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  • Hansa-Brandenburg W.12 Floatplane Biplane Fighter


    The Hansa-Brandenburg W.12 was intended to repair the failings inherent in the previous KDW series with the addition of a rear gunner.

     Updated: 6/26/2016; Authored By Staff Writer; Content ¬©www.MilitaryFactory.com


    The Hansa-Brandenburg W.12 was a two-seat floatplane fighter seaplane design serving the German Empire through the final years of World War 1. The type first flew in early 1917 and entered service shortly thereafter, intending to improve on the base weaknesses of the previous KDW floatplane. Amazingly, the design withstood the test of time and saw future service with the Dutch Naval Air Service up until 1933 before being retired. Some 181 total examples were produced during the aircraft's tenure.

    W.12 Origins

    The W.12 maintained its origins in the Hansa-Brandenburg KDW floatplane fighter appearing in 1916. The type was also a design of Ernst Heinkel (his Heinkel firm to became well known in the upcoming World War 2) and some 60 examples were built in all. The KDW itself was a modified conversion form of the land-based Hansa-Brandenburg D.I. One of the major deficiencies in the KDW design lay in defense of the rear quarters. For this, Heinkel took reworked his design and implemented a rear cockpit for an observer machine gunner to help defend the airframe from enemy attacks emerging from the rear. While this gunner operated his machine gun along a trainable mount, special attention was given to provide for a better field of fire as well. This led to the relocation of the vertical tail fin from its dorsal placement to a ventral placement, giving the W.12 a wholly definitive and highly identifiable appearance while - at the same time - providing the rear gunner with an unfettered view of the action to his front and sides. After trials and evaluation, the W.12 entered service with the German Kaiserliche Marine in the middle of 1917.

    W.12 Walk-Around

    The W.12 took on a most unique appearance when viewed from most any angle. The fuselage was rather slab-sided with large-area coverings across her internal structure. The engine was fitted at the extreme forward end of the fuselage with a noticeable exhaust stack protruding from atop the engine mount. The pilot sat directly behind the ending compartment with the observer/gunner to his immediate rear in a circular cockpit. Hand grips and steps were afforded the crew for entering/exiting the tall aircraft. The empennage was slightly raised and ended with a downturned vertical tail fin. Stabilizers were mounted at the absolute top edges of the fuselage rear. The fuselage itself was attached (by way of struts) to a pair of floats for the required sea duty (landings and take-offs could be accomplished with no limitations on runway length when on the open sea). Wings were of a biplane arrangement, braced by parallel struts and applicable cabling. Key to the structure of the wings was its durable construction which allowed Heinkel the ability to rely less on the bracing wires found on most contemporary biplane designs. Basic construction was of wood covered over in fabric.


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    Hansa-Brandenburg W.12 Technical Specifications


    Service Year: 1917
    Type: Floatplane Biplane Fighter
    National Origin: Imperial Germany
    Manufacturer(s): Hansa-Brandenburg - Germany
    Production Total: 181



    Structural (Crew Space, Dimensions and Weights)


    Operating Crew: 2
    Length: 31.50 feet (9.6 meters)
    Width: 36.75 feet (11.20 meters)
    Height: 10.83 feet (3.30 meters)

    Weight (Empty): 2,198 lb (997 kg)
    Weight (MTOW): 3,206 lb (1,454 kg)

    Installed Power and Standard Day Performance


    Engine(s): 1 x Mercedes D.III 6-cylinder, inline piston engine developing 160 horsepower.

    Maximum Speed: 99 mph (160 kph; 86 knots)
    Maximum Range: 323 miles (520 km)
    Service Ceiling: 16,404 feet (5,000 meters; 3.11 miles)

    Armament / Mission Payload


    1 OR 2 x 7.92mm LMG 08/15 machine guns in fixed, forward-firing position.
    1 x 7.92mm Parabellum MG14 machine gun in rear trainable cockpit position.

    Global Operators / Customers


    Imperial Germany; Netherlands

    Model Variants (Including Prototypes)


    W.12 - Base Production Model Designation serving the German Kaiserliche Marine (Navy); 146 examples produced.

    W-A - License-produced W.12 models; fitted with Benz engine; 35 examples produced by the Netherlands.

    C3MG - German Naval Designation