Terminal 5 at Holyhead will re-open for ferry traffic on 16 January, although Terminal 3 remains closed until further notice.
Both Stena and Irish Ferries will use Terminal 5.
This means that Irish Ferries services will run earlier than normal
The 0805 from Dublin will now leave at 0730
The 2055 from Dublin will now leave at 1945
The 0240 from Holyhead will now leave at 0130
The 1410 from Holyhead will now leave at 1315
EDIT- Stena have also substantially amended their timetable. While only the one berth is open it is-
Holyhead depart 0400 Dublin arrive 0730
1000 Dublin arrive 1330
1600 Dublin arrive 1930 (so will miss all last rail connections from Dublin)
2215 arrive 0145
Dublin depart
2230 Holyhead arrive 0200 (the first of these sailings is on 15 January)
0430 Holyhead arrive 0800
1015 Holyhead arrive 1345
1630 Holyhead arrive 2000 (so will miss all rail connections)
Thus the final sailings of the emergency Liverpool to Dublin, Fishguard to Dublin and Pembroke Dock to Dublin are all expected to be on 15 January.