Additional services have been provided by Stena and Irish Ferries at alternative ports, with Irish Ferries due to begin a new service from Fishguard later today.
Mae Stena ac Irish Ferries wedi darparu gwasanaethau ychwanegol mewn porthladdoedd eraill, ac mae Irish Ferries ar fin dechrau cynnig gwasanaeth newydd o Abergwaun yn ddiweddarach heddiw.