Stena Line is spending almost £5m refitting its Irish Sea ferries at Harland & Wolff, it can be revealed.
Over the next two months, seven Stena Line vessels will visit the shipyard on a carefully sequenced timetable to facilitate a range of specialist works.
These include annual inspections, passenger facility upgrade work as well as ongoing technical enhancements.
And the work will be carried out by Harland & Wolff.
Paul Grant, Stena route manager, said the "refits are very important to ensure the smooth and safe running of our expanding fleet of ships".
"The decision to place the majority of our refit contract work with Harland & Wolff allows us to play our part in helping to support local business.
"Furthermore, the good working relationship with Stena Line has helped introduce the shipyard to other companies within the Stena Group and we were delighted to see our sister company Stena Bulk bring the 117,000 tonne ice class Aframax tanker Stena Arctica to Belfast for the first time in a £1m specialist inspection survey and upgrade programme in November 2015," he added.
And Stuart Wilson, Harland & Wolff's general manager in charge of ship repair said: "We are delighted that our relationship with Stena continues to go from strength to strength".
Stena Line has supported the ship refit and repair industry in Northern Ireland with contracts worth £13m over the last five years.
That includes range of refit, upgrade and maintenance projects here.
Stena Line currently services a range of routes from Belfast across the Irish Sea.
Those routes include Belfast to Liverpool, along with the link from Belfast to Cairnryan in Scotland.