The Siemens torpedo glider, seen under the hull of Zeppelin L35.

The wire-guided flying missile from Siemens. It was not flown into the target, but could have been, according to Alex Imrie and that at a suitable position and height a special signal caused the airframe components to detach from the torpedo, which then entered the water and continued towards its ship target in the usual manner of a ordinary torpedo.

Siemens Schucker Werke (SSW) was already busy with remote controlled boats (the Fernlenkboote) at the time, and had some experience into this domain. It was Dr. Wilhelm von Siemens who suggested the use of remote controlled glide bombs about October 1914. Flight testing was done under supervision of Dipl. Ing. Dorner from January 1915 on. They used several types during their experiments, biplane and monoplane gliders in which a torpedo was fitted. Used for the test were for more Z XII, L35 and PL 25. The real last test flight was done on 2nd August 1918. However test failed.

Foreseen was to use the R VIII bomber plane as carrier against the end of WWI, but armistice stopped the project.