Kiel
There are several notable port cities in Germany that are on or near the Baltic Sea, but Kiel is the largest and most profitable.
port of Hamburg
St. Petersburg is a port on the Baltic Sea
If you mean Tsar Peter the Great, then St Petersburg
Lubeck, Germany, is situated on the Trave River. Lubeck is the largest German port on the Baltic Sea.
St Petersburg or the Enclave of Kaliningrad
A 'baltic port', is any port on the Baltic Sea, which is situated between Scandinavia and northern-central Europe. Oslo, Stockholm, Helsinki, Gdansk, Rostock and Copenhagen are all Baltic ports.
The Baltic Sea
Ostsee
There is the Russian Enclave of Kaliningrad on rhe Baltic, and St Petersburg which is on the Gulf of Finland, a branch of the Baltic Sea
Because of the Moscow Canal, the city has access to five seas, the White Sea, the Baltic, the Caspian, the Black Sea and the Sea of Azov
Lithunia's main port is Klaipeda, on the south eastern side of Baltic Sea
Gdańsk.
The Russian city closest to the Baltic Sea is Saint Petersburg.