The first and most significant surface engagement occurred on 26 June 1941, when a Soviet task force attacked Constanța. The Raid on Constanța involved the only destroyer-size engagement on the Black Sea during the war when Romanian destroyers Marasti and Regina Maria briefly engaged the destroyers "Moskva" and "Leningrad" (both of Leningrad-class). Both Soviet units suffered light damage during the engagement, and "Moskva" sunk on a defensive minefield. As outcome of the action, while retaining naval superiority in Black Sea, the Soviet Navy's surface ships focused more in amphibious operations and ground support during the Siege of Odessa.