This study introduces the milestones of academician N.A. Semikhatov, an outstanding scientist and designer, who substantially contributed to the creation of our country’s nuclear shield, including ballistic missiles, for the world’s most potent nuclear submarines, Typhoon, are equipped with control systems developed under his leadership. Semikhatov focused on the training of scientific and engineering personnel, headed the department of radio engineering faculty of the Ural Polytechnic Institute for over 20 years, was one of the initiators of the Institute of Machine Science of the Ural Branch of the Russian Academy of Sciences, where he later worked as a permanent member of the Joint Scientific Council on Mathematics, Mechanics, and Computer Science at the Institute of Mathematics and Mechanics, and a member of the Presidium of the Ural Branch of the Russian Academy of Sciences. Of note, this study was also drafted using the memories of his colleagues, relatives, and friends.