The ship bombarded Varna twice in October 1915; during the second bombardment on 27 October, it entered Varna Bay and was unsuccessfully attacked by two German submarines stationed there.
1915年10月下旬，本舰两次炮击瓦尔纳，在10月27日第二次炮击时，她进入了瓦尔纳湾，并遭到驻扎在那里的两艘德国潜艇不成功的攻击。