 Complete the following phrase:  Aurora laid her first mine barrage in the morning of 30 June, off Sulina, during the Soviet invasion of Bessarabia . She was commanded by Lieutet-Commander Stan Baicu. A second barrage was laid during the night of 1011 January 1941. She laid a third barrage in the area on 2728 June 1941. Between 16 and 19 June 1941, she and two other Romanian minelayers, Amiral Murgescu and Regele Carol I converted merchant ship, laid a barrage of 1,000 mines between Cape Midia and Tuzla, to protect the main Romanian port of Constanța. The mines laid off Constanța would later sink a Soviet destroyer leader during the 26 June Soviet raid on the port. Aurora herself was sunk on 15 July at Sulina during 