bunker vessel BETA Bunker Station ENNS (km. 2112 Danube) t/b MARITZA Bunker Station ENNS m/t RIGEL m/v EUROPA m/t ARIES Bunker Station ROUSSE (km. 495 Danube) m/v MADARA bunker vessel ARDA m/t RIGEL m/t ARIES t/b MARITZA adn t/b TE-2 in convoy with m/v MADARA m/v MADARA bunker vessel ORION m/v MADARA with t/b MARITZA