- Polish Steamship Company
- Żegluga Polska S.A.
- CHIPOLBROK – Chinese-Polish Joint Stock Shipping Company
- Polish Baltic Shipping Company (Polferries )
- Euroafrica Services Limited Branch in Poland
- Unity Line Limited Branch in Poland
- Polish Ocean Lines
- Dredging and Underwater Works Company
- Fairplay Towage Polska
- Polskie Ratownictwo Okrętowe Sp. z o.o.
- Gdynia Maritime University
- Maritime University of Szczecin
- Unibaltic
