Very little is known about a third seaplane design from the Nieuport firm. Built in 1912-13, it was a large sesquiplane with a short central fuselage for a crew of 2 or 3, and a 110 hp Salmson engine installed as a pusher. The tail surfaces were mounted at the ends of 2 long booms fabricated of compressed paper. The machine was reported to have been an armored design for military use only, eventually to mount a forward-firing machine-gun. Only one was built and flown.

   (Span: (upper) 15 m; (lower) 7 m; length: 7.5 m; wing area: 40 sqm; speed: 110 kmh)