Stena Superfast VII and Superfast VIII will be the largest ferries to sail between Scotland and Northern Ireland and are currently undergoing upgrades in Poland. When complete the ships will be the first on the Irish Sea to offer passengers the opportunity to relax in a Pure Nordic Spa during the two-hour 15-minute crossing.
The spa will feature a sauna and Jacuzzi which will be exclusively available to Stena Plus and Premium fare passengers.
The line's new Cairnryan to Belfast service is scheduled to launch on November 21. The new Superfast vessels will make 12 crossings per day and are now available to book online at www.stenaline.co.uk