North Sea between and among rivers, artificial harbours, and the sea. The Kiel Canal, connecting the North Sea with the Baltic Sea, is the most heavily used artificial seaway in the world reporting an average of 89 ships per day not including sporting boats and other small watercraft in 2009. It saves an average of , instead of the voyage around the Jutland peninsula. The North Sea Canal connects Amsterdam with the North Sea. North Sea The North Sea is a marginal sea of the Atlantic Ocean located between the United Kingdom (particularly England and Scotland), Denmark, Norway, Sweden, Germany, the Netherlands,
Baltic Sea campaigns (1939–45) had signed the Anglo-German Naval Agreement, which allowed it to expand considerably. The name "Kriegsmarine" was adopted the same year. Though a large, powerful, and professional force, it had to divide its assets between several theaters of war, severely limiting the number and size of the ships it was able to deploy in the Baltic Sea. At the start of the Operation Barbarossa on 21 June 1941 German naval forces in the Baltic Sea consisted of In September 1941 Germany formed the provisional "Baltenflotte", which consisted of the battleship , cruisers , , , and , destroyers , , and