Dublin Port is responsible for both ferry passengers and cruise passengers arriving and departing from Dublin.
Today four ferry companies, between them, operate up to thirteen sailings daily connecting Dublin with Holyhead, Liverpool and Douglas.
Dublin is Ireland's most popular port with cruise liners. In 2010 85 cruise vessels visited Dublin. Smaller liners can come up the river Liffey close to the city centre while the larger vessels berth in Alexandra Quay, located 2kms from the city centre.
For more details see website.