Stena Line has moved one of its ferries from Belfast to Rosslare in what it has called a “Brexit busting move”.
When the Stena Embla arrived in Belfast on 2 January the company said it would be concentrating on transporting freight between Belfast and Liverpool.
However, on Wednesday the company tweeted that it would be deployed on the Rosslare to Cherbourg route.
Businesses and hauliers have faced difficulties transporting goods from GB to NI post Brexit.
The UK officially finished its formal separation from the EU on 31 December, 2020.
Since then there has been disruption to trade across the Irish Sea border.
Northern Ireland remains in the EU single market for goods and will continue to enforce EU customs rules at its ports.
The Irish Sea border means that most commercial goods entering NI from GB require a customs declaration.
The Irish Times said the move was made as more businesses sought to avoid Irish Sea ports and border patrols.