In order to find out if you require a visa for entry to Ireland, whether by air, sea or land, please liaise with your local Irish Embassy or other diplomatic representative before you travel. An Irish visa is a certificate placed on your passport or travel document to indicate that you are authorised to land in the State subject to any other conditions of landing being fulfilled. This means that you will still be subject to immigration control at the point of entry to the State even if you have a visa.
In 2011, a Visa Waiver Programme was introduced covering 16 countries that currently require a visa to visit Ireland. This Programme allows nationals of countries, who have a short-term UK visa, to come to Ireland without the need for a separate Irish visa.