Freight ferries from Poland to Scandinavia with Polferries.
These routes are popular for vehicles travelling to Scandinavia overland rather than taking a direct ferry from the UK across the North Sea for example. And of course many Polish freight transporters use these routes to reach the Northern States and Baltics regions.
Polferries is a large Polish ferry operator operating across the Baltic Sea between Poland and Scandinavia. It was established in 1976 as a state-owned shipping company. It's original name was The Polish Baltic Shipping Company.