The Fokker B.II was a reconnaissance flying boat built in the Netherlands in 1923 to be used by warships. It was a conventional flying boat design with sesquiplane wings braced with N-struts. The engine was mounted tractor-fashion on the leading edge of the upper wing. Open cockpits were provided for the crew under the upper wing and in a dorsal position amidships. The Royal Dutch Navy tested the prototype, but no production order followed.