Bditelny was one of 29 s (officially known as Project 7) built for the Soviet Navy during the late 1930s. Completed in 1939, she was assigned to the Black Sea Fleet. After the German invasion of the Soviet Union began in 1941, the ship provided naval gunfire support during the Siege of Odessa. Frequently under repair due to running aground in 1941, "Bditelny" was unable to support the defenders of Sevastopol until early 1942 when she began to ferry supplies and troops there while also bombarding German positions outside the besieged city. She was sunk during a German airstrike in July when some of her torpedoes exploded. Her wreck was salvaged for scrap between 1948 and 1952.