A new £160m super-ferry is being taken off the Holyhead to Dublin route for repairs and maintenance after suffering engine problems.
Stena Line's Estrid vessel started on the route in January after being built at AVIC Weihai Shipyard in China - performing its maiden voyage as Storm Brendan raged.
But now the ship is set to be taken out of service for up to six weeks.
It comes after suffering problems with its German built engines.
The ship will be replaced by the Stena Nordica.
This all comes as the ferry industry battles through the coronavirus pandemic with passenger levels vastly reduced.
A Stena Line spokesman said: "From the beginning of May, Stena Estrid will be taken out of service for approximately five to six weeks, for maintenance and outfitting work.
"The vessel will be berthed in Cairnryan, where the work will be undertaken by Stena Line's engineers.
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"Stena Nordica will serve as the relief vessel on the Holyhead-Dublin route, where it is being deployed after finishing its charter contract with the 海角视频’s Department of Transport.
"In the current climate she will provide ample capacity.
"Once Stena Estrid is back in operation, Stena Nordica will then move south to cover the Fishguard-Rosslare route, where it will relieve the Stena Europe for approximately two weeks for the annual refit.
"These are roles the Stena Nordica is familiar with, in recent years the vessel has undertaken temporary postings on both routes on the Irish Sea, where it has provided cover for a number of vessels.
"On completion of these postings the Stena Nordica will transfer to the Baltic Sea to serve as a third vessel on the Karlskrona-Gdynia route, focusing on freight cargo."