 Complete the following phrase:  Sokrushitelny  was one of 29 s officially known as Project 7 built for the Soviet Navy during the late 1930s. Completed in 1939, she was initially assigned to the Baltic Fleet before she was transferred to the Northern Fleet in late 1939. After the German invasion of the Soviet Union in June 1941, the ship laid several minefields in the White and Barents Seas. Sokrushitelny spent most of her service escorting the 