Stena Line had earlier cancelled its 0315GMT sailing on Friday from Fishguard, west Wales, to Rosslare, but was still undecided whether the 1430GMT sailing would go ahead.
Irish Ferries' sailings from south west Wales between Pembroke and Rosslare have been cancelled for Friday, while Stena Line said its afternoon sailing from Fishguard was looking unlikely.
However, the biggest problem facing the crew was that the ferry was due to arrive in Rosslare five minutes after the last last train to Dublin had departed.