Baltic Sea I think
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There is a mistaken assumption in the question. Germany's ports have never been on one single body of water.
The most important German ports are on the North Sea - or to be more precise on rivers that flow into the North Sea - Hamburg (on the Elbe) and Bremen on the Weser - also Emden, Bremerhaven and Cuxhaven.
There are also major ports on the Baltic - Kiel, Luebeck and Rostock.
In addition, Germany has some major inland port on rivers, such as Ludwigshafen and Duisburg.
"Germany's only port" is a non-existent category. Germany has at least eight ports on its North Sea and Baltic Sea coasts.
The North Sea is a large body of water located north of the Benelux Countries and Germany.
The Elbe River and the Spree River within the city limits of Berlin.
About 2/3 of your body's water is located in your blood cells.
Jeetzel River
Towns and cities are often located by a body of water because it either protected them or fed them.
Regina, capital of Saskatchewan, is not located on a body of water.
The water body that is located in the east of Egypt is the Red Sea.
Total pressure of an aircraft is the pressure being meausred at the pitot tube opening. And the static ports are normally located alongside the body of the aircraft to measure the dynamic pressure. Type "static ports 777" in google images and you will know where they are!
The body of water located in the Sinai Peninsula and the rest of of Egypt is called the Gulf of Suez.
The Gulf of Mexico?
north sea