12/15/2017. Remarks by Johan Visschedijk: "This unique aeroplane, to the design of Oskar Ursinus (editor of Flugsport), was built by the Gothaer Waggonfabrik (Gotha Railcar Factory), in both land and seaplane versions. The landplane, designated G.I (also referred to as UKL), was powered by two 150 hp Benz Bz III engines. Eighteen were constructed and the first flew on July 27, 1915. A crew of three was carried, and the gunner in the front cockpit had an unparalleled field of fire. The idea of raising the fuselage was to enable the engines to be placed as close together as possible-airscrew tips almost touching-in order to retain a good degree of control in asymmetric flight should failure of either engine occur. In both types contra-rotating airscrews were employed.

Only a single seaplane was built, designated WD 4 (also referred to as UWD), this version was powered by two 160 hp Daimler D II engines. Serialed 120, it was first flown on January 16, 1916. Ultimately this aircraft, nicknamed "Trojan Horse", was used as a training machine for torpedo crews."