Facts about Dublin Bay

The Dublin Bay is an inlet of the Irish sea that is located on the east coast of Ireland. Most of the rivers of Dublin reach the sea through this inlet; among the rivers include River Liffey, River Dodder, River Tolka, and other smaller rivers and streams.

The bay is surrounded by the metropolitan area of Dublin in 3 sides (north, west, and south), while the east belongs to the Irish Sea. Dublin was discovered by the Vikings to the point that they were able to cruise the River Liffey from the estuary. The history of the city is evident from what is now known as the James’ Gate area, which is just along the coastline (Northeast of Howth and Southeast of Dalkey).

What to Expect from the Bay

Dublin Bay is actually shallow as it is rocky and has many sandbanks. It is known in the past for shipwrecks that are being blown by the wind — especially when it comes from the east. Up until now, several ships and their passengers easily get lost along the tricky coastline between Howth and Dun Laoghaire, which is just approximately less than a kilometer away from the shore. Map during the earlier times, in fact, show slim shipping channels and mooring areas.

Facts about Dublin Bay

The bay consists of 2 inshore and sand banks, namely the South Bull and the North Bull. The construction of the Bull Wall allowed North Bull to build up quickly which forms the North Bull Island. The southern wall, which is the Great South Wall, has been built earlier but didn’t lead to island formation. In contrast, the South Bull of today is a muddy area. Additionally, there are other offshore banks, including the Kish Bank.

The coastline of the Dublin bay is consists of several beaches that include Sutton Strand, Dolly mount Strand, Sandy mount, Sea point, and South Dun Laoghaire. The remaining coasts are either muddy or rocky.

History of Dublin Bay

More than 500 crews and passengers (which consist mostly of military personnel) were lost when the German U-Boat sunked the steamship RMS Leiinster in October 10, 1918.

Facts about Dublin Bay

The Dublin Port and Docks Board proposed building an oil refinery in Dublin Bay in 1972. The plan, however, was strongly opposed by various environmentalists in Dublin which includes the Dublin City Councilor Sean D. Loftus; this is on the grounds that it will lead to a high risk of polluting the waters and the area. During elections, Loftus opted to change his name to “Sean Dublin Bay Loftus”. While he wasn’t elected for office, he was actually successful in publicizing the environmental issues of building an oil refinery which led it to be turned down by James Tully, which is the Minister of Local Government at that time. Loftus was also the leader of the opposition during subsequent proposals of the Dublin Port Company to fill in approximately 52 acres of Dublin Bay. Other proposals he opposed to include building giant underwater gas storage tanks and infill for leisure park creation.

During summer of 2010, however, An BordPleanala refused to permit the Dublin Port Company to go on with its plans for infilling further 52 acres of the Dublin Bay. The proposal was strongly opposed by environmentalists, politicians, and residents for more than 2 decades. An BordPleanala has rejected 90 percent of the recommendations of its own inspector; the refusal was on the grounds that it wasn’t satisfied that the proposal will not negatively affect the Bay’s integrity.


Floods in the coastal region of Dublin Bay commonly occur during high tide, usually in the city side of Clontarf and Sandy mount.

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