 She and her sister ship Ioann Zlatoust were the most modern ships in the Black Sea Fleet when World War I began and formed the core of the fleet for the first year of the war , before the dreadnoughts entered service . They forced the German battlecruiser SMS Goeben to disengage during the Battle of Cape Sarych shortly after Russia declared war on the Ottoman Empire in late 1914 . She covered several bombardments of the Bosphorus fortifications in early 1915 , including one where she was attacked by Goeben , but Evstafi , together with the other Russian pre @-@ dreadnoughts , managed to drive her off . Evstafi was relegated to secondary roles after the first dreadnought entered service in late 1915 and reduced to reserve in 1918 in Sevastopol . 
