The company says passengers will be accommodated on other sailings
Irish Ferries has cancelled a number of crossings between Dublin and Holyhead that had been scheduled for this coming Friday.
'Swift' and 'Oscar Wilde' services from Dublin-Holyhead (the 08:45, 10:45 and 14:30 departures) and Holyhead-Dublin (the 11:50, 16:45 and 17:15 departures) are affected, with the ferry company citing 'adverse weather conditions on the Irish Sea'.
The company says customers will be accommodated on other ferries on December 23rd and 24th, and has apologised for any inconvenience caused.
You can find out full details of cancellations on the Irish Ferries website.
It comes as Met Éireann has issued two weather warnings for Friday, with Storm Barbara set to pass over Ireland this weekend.