Hi Kees,
It is a bit odd, a dinosaur really, in 1918 when Laboratoire Eiffel was established authority and C.E.P. Caproni's flew combat missions, when large Bleriot designs, if not practical, were far from obvious aerodynamic blunders, as well as Farman Goliath and big Caudrons taking shape, and last but not least several large flying boats flying.
Yavor