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,
White Sea–Baltic Canal and Caspian coasts. The White Sea Canal was also constructed with military use in mind, and early in its history the canal was used to transfer the Northern Fleet's first warships to the White Sea from the Baltic. According to historians, in the years between the canal's completion and the Soviet entry into World War II, the canal was used for the transfer of military vessels between the two seas on 17 occasions. During World War II, in August–September 1941, the canal was used to move a number of submarines from the Baltic Fleet to the White Sea. That included