Alberto Rizzi, e-mail, 27.06.2017 18:01 Very few are the news I found that concern this airplane; for what I know: Wingspan – m. 10,20 (= 33 ½ feet) Length – m. 7,90 (= 26 feet) Loaded weight – 950 Kg (= 2092 lb) Engine 1 x 160 CV Mercedes D III (inside the fuselage, the airscrew connected by some kind of gears). There are photographs that show the airplane fitted with a machine gun for the observer, on a flexible element on the right side of the cockpit, the two members of the crew sitting side by side. By the way, during the first days of war, one Oertz made a reconnaissance flight over Dover: perhaps the first German aircraft to violate the British airspace.

Barry, 31.08.2016 16:02 Oertz was a Hamburg based yacht building company, which produced a series of 12 flying boats starting before WW I. The W 4 was produced in 1914, to be supplanted by the W 5 in 1916. The hulls were extremely well designed resulting in the lack of need for wing floats, instead spring loaded hydrovanes were fitted at the wing tips.

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