The Arctic Ocean Flotilla (AOF) (Russian: Флотилия Северного Ледовитого океана, or Flotiliya Severnogo Ledovitogo okeana), was a Russian military flotilla stationed in Aleksandrovsk- today's Polyarny at the mouth of the Kola Gulf, Iokanga, and Arkhangelsk.
In July 1916, the formation of the AOF began and by September was dominantly complete. By the end of 1917 the AOF comprised the battleshipChesme, cruisersAskold and Varyag, 6 destroyers, 3 submarines and other ships. The AOF's operational zone included the Barents Sea from the Norwegian border to the Kara Gates and the White Sea. Its mission was to secure uninterrupted the sea lines of communications connecting Russia with its Entente allies.