Gdańsk.
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
Both St Petersburg and Kaliningrad
St. Petersburg is a port on the Baltic Sea
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.
Trieste is a port city. It's location on the Port of Trieste made it a capital for financial services and shipbuilding.
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.
Gdansk in Poland
Lithunia's main port is Klaipeda, on the south eastern side of Baltic Sea
Nagasaki
Latvia, the Republic of Latvia.
Estonia, Latvia and Lithuania
None. Pearl was not a shipbuilding port. It was a Fleet base where they were repaired and resupplied.