Stena Line is introducing a new service from Poland with an Ernst Russ ro-ro.
The 1,625-lane-metre Elisabeth Russ (built 1999) will operate six times a week between Gdynia and Nynashamn in Sweden from 16 October.
"The demand for freight capacity in the Baltic Sea has been growing steadily over the last number of years and Stena Line is supporting this growth through investing in a new route," it said.