As World War I approached, the Russians faced seemingly intractable problems in defending their capital, St. Petersburg, from a German naval or amphibious assault. The Japanese had sunk the mainstay of defense, the Baltic Fleet, at Tsushima in 1906, and while the Russians embarked upon a fleet construction program, progress was slow owing to political considerations, and the higher priority
... [Show full abstract] accorded the army’s reconstruction. With no chance of matching the Germans in a naval engagement, the Russian naval staff came up with an ingenious scheme using a combination of minefields and long-range coastal artillery located on strategic islands in the Gulf of Finland, turning the narrow gulf into a gantlet that stymied the Germans.