Mass productioned mid-caliber soviet naval gun. Designed in 1929-35, produced in 1935-54
These four guns forming battery #198 were installed at Vladivostok defensive area in the beginning of 1970s. Barrels No (left-to-right) 118Н, 110Н, 068Н, 136Н were produced by Bolschevick plant after 1948
