High Quality Content by WIKIPEDIA articles! The Evstafi-class were a pair of pre-dreadnought battleships of the Imperial Russian Navy built before World War I for the Black Sea Fleet. They were slightly enlarged versions of the Russian battleship Potemkin, with increased armour and more guns. Numerous alterations were made as a result of experience in the Russo-Japanese War of 1904–5 that seriously delayed the completion of the two ships.