Geographical problems: conditions suitable for naval battles near the North Sea during World War II

1. The North Sea lies in the east of the North Atlantic. It is connected to the Atlantic Ocean in the west through the Dover Strait and the English Channel, and to the Baltic Sea in the east. It has a high strategic position and is a battleground for military strategists. 2. Germany's invasion of Scandinavia, Norway and other countries must pass through the North Sea. 3. The North Sea is an important transportation line for the Allies. 4. The important transportation lines of fascist Germany ensured the necessary sea areas of pseudo-France. 5. The North Sea is wide and relatively calm, which provides quite superior vision and stable conditions for naval warfare. 6. The weather conditions in the North Sea in the temperate maritime climate area are good and it is not easy to freeze.