Following the November Revolution, the crew of "Bogatyr" declared for the Bolshevik cause, and the ship joined the Red Navy. After the armistice with Germany in December 1917, "Bogatyr" was demobilized at Helsinki. The Treaty of Brest-Litovsk required the Soviets to evacuate their base at Helsinki in March 1918 or have them interned by newly independent Finland even though the Gulf of Finland was still frozen over. "Bogatyr" sailed to Kronstadt in what became known as the 'Ice Voyage', and was placed into reserve shortly after her arrival.