Grigorovich M-5 (alternative designation Shch M-5 sometimes also Shchetinin M-5) was a successful Russian World War I-era two-bay unequal-span biplane flying boat with a single step hull designed by Grigorovich. It was the first mass production flying boat built in Russia.
Made by Shchetinin.
It is the successor of the Curtiss Model K (aircraft) .