OMOS

Dept, of experimental marine aircraft design formed 1925 at Leningrad under Grigorovich. Products known by name of designer (Grigorovich, Syedelnikov, Gimmelfarb, Korvin, Mikhelson, Samsonov, Shavrov, Vigand) except KR-1 reconnaissance flying-boat derived from Heinkel HD 55 (1930).

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