The North Sea is a body of water located between the United Kingdom, Norway, Germany, Denmark, and the Netherlands. The port cities of Emden (5 letters), ABERDEEN (8 letters), Oslo (4 letters), and Ostend (6 letters) are all located on the North Sea and serve as important ports for trade and transportation. Emden is a city in Lower Saxony, Germany, while ABERDEEN is a city in Scotland. Oslo is the capital of Norway, and Ostend is a coastal city in Belgium.