北ドヴィナ川
Severodvinsk () is a city in the north of Arkhangelsk Oblast, Russia, located in the delta of the Northern Dvina River, west of Arkhangelsk, the administrative center of the oblast. As of the 2010 Census, the population was 192,353. Due to the presence of important military shipyards (specialising in submarines since the Soviet period), Severodvinsk is an access-restricted town for foreign citizens. A special permit is required.