Er mwyn cludo nwyddau o Brydain Fawr i Iwerddon, gan gynnwys o borthladdoedd Cymru, mae angen Hysbysiad Cyn Byrddio (PBN) ar gludwyr oddi wrth Gyllid Iwerddon. Hebddo ni fyddant yn gallu mynd i mewn i’r porthladd i fynd ar y fferi, a byddant yn cael eu gwrthod.
To transport goods from Great Britain to Ireland, including from Welsh ports, hauliers need a Pre-Boarding Notification (PBN) from the Irish Revenue. Without it they will not be able to enter the port to board the ferry, and will be turned away.