Grigorovich M9 (1916)
Russian Imperial navy, 183 (300 until 1923*) built 1915-1917. The Grigorovich M-5 (Or Shchetinin M-5) was the best Russian World War I seaplane by far. It led to a mass production with multiple variants, for a lineage that lived on until the late 1920s, and later lost to Beriev. The Grigorovich M9, which followed two … Read more