However, STENA switched the Rosslare-Cherbourg France service, which is in high demand due to Irish truckers who try to avoid the UK "land bridge" to the European Union.
The move was mainly to allow another ship on the route to undergo maintenance.
According to Paul Grant, STENA's Irish Sea trade director, the Embla ship would make one daily return trip between Belfast-Liverpool.
He added that in March 2020, STENA deployed Stena Edda ship onto the Belfast-Liverpool route. Now they would have 2 ferries offering identical services and facilities.
The new ship increased the route's freight capacity by 20%.