Dublin Port Installs New Tern Nesting Pontoons

27th May 2026

Afloat.ie Team

Bay Build — New tern nesting pontoons are installed near Dublin Port’s Greenway and Great South Wall as biodiversity works continue within Dublin Bay’s UNESCO Biosphere

Arctic and Common Terns returning to Dublin Bay for the 2026 breeding season will be welcomed by two new nesting pontoons installed by Dublin Port and BirdWatch Ireland.

The floating nesting structures have been deployed near the Dublin Port Greenway and the Great South Wall as part of long-running efforts to support migratory seabirds and biodiversity within Dublin Bay.

Tern Tow — A Dublin Port workboat manoeuvres one of the new nesting pontoons into position ahead of the return of Arctic and Common terns to Dublin Bay for the 2026 breeding season

Hundreds of pairs of Arctic and Common Terns return annually to nest on purpose-built pontoons and designated gravel areas within the port estate. Dublin Port has supported BirdWatch Ireland’s Dublin Bay Birds Project since 2013.

The previous pontoons had reached the end of their operational life and were replaced ahead of this summer’s breeding season. Final preparation work was completed in recent weeks after the new components arrived in April.

Dublin Port engineer Eamon McElroy said the structures recreate the birds’ preferred nesting habitat.

Safe Harbour — One of the new gravel-topped tern nesting pontoons lies in position in Dublin Bay ahead of the arrival of breeding seabirds this summer

“Each May we welcome Arctic and Common terns back to Dublin Bay and provide purpose-built nesting environments for them,” he said.

“These structures replicate shingle and gravel habitats, the birds’ natural breeding environment, which is now under pressure from climate change and human disturbance in many places around our coastline.”

McElroy noted that Arctic Terns undertake one of the world’s longest migrations, travelling annually between northern breeding grounds and the Southern Ocean.

BirdWatch Ireland’s Dublin Bay Birds Project manager Helen Boland described the birds as “among the world’s most iconic migratory seabirds”.

“We are delighted to see these new pontoons in place, just in time for the 2026 breeding season,” she said.

Sky Swirl — Terns wheel above Dublin Bay as BirdWatch Ireland and Dublin Port continue long-term efforts to support breeding seabirds and biodiversity

One pontoon has been positioned in the Tolka Estuary and is visible from the Dublin Port Greenway, the 2.2km walking and cycling route opened in September 2024.

The second pontoon is located in the River Liffey near the Half Moon Swimming Club on the Great South Wall. Both structures complement permanent gravel nesting sites already established within the port.

Dublin Port said visitors and birdwatchers should take care not to disturb the birds while they are breeding.

The project forms part of wider biodiversity initiatives at Dublin Port, including black guillemot nesting boxes, eco-engineering works in the River Liffey and habitat creation linked to the Greenway development.

Published in Dublin Port, River Liffey, Dublin Bay, Marine Wildlife

Published in Dublin Port

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About Dublin Port

Dublin Port is Ireland’s largest and busiest port with approximately 17,000 vessel movements per year. As well as being the country’s largest port, Dublin Port has the highest rate of growth and, in the seven years to 2019, total cargo volumes grew by 36.1%.

The vision of Dublin Port Company is to have the required capacity to service the needs of its customers and the wider economy safely, efficiently and sustainably. Dublin Port will integrate with the City by enhancing the natural and built environments. The Port is being developed in line with Masterplan 2040.

Dublin Port Company is currently investing about €277 million on its Alexandra Basin Redevelopment (ABR), which is due to be complete by 2021. The redevelopment will improve the port's capacity for large ships by deepening and lengthening 3km of its 7km of berths. The ABR is part of a €1bn capital programme up to 2028, which will also include initial work on the Dublin Port’s MP2 Project - a major capital development project proposal for works within the existing port lands in the northeastern part of the port.

Dublin Port has also recently secured planning approval for the development of the next phase of its inland port near Dublin Airport. The latest stage of the inland port will include a site with the capacity to store more than 2,000 shipping containers and infrastructures such as an ESB substation, an office building and gantry crane.

Dublin Port Company recently submitted a planning application for a €320 million project that aims to provide significant additional capacity at the facility within the port in order to cope with increases in trade up to 2040. The scheme will see a new roll-on/roll-off jetty built to handle ferries of up to 240 metres in length, as well as the redevelopment of an oil berth into a deep-water container berth.

Dublin Port FAQ

How old is Dublin Port?

Dublin was little more than a monastic settlement until the Norse invasion in the 8th and 9th centuries when they selected the Liffey Estuary as their point of entry to the country as it provided relatively easy access to the central plains of Ireland. Trading with England and Europe followed which required port facilities, so the development of Dublin Port is inextricably linked to the development of Dublin City, so it is fair to say the origins of the Port go back over one thousand years. As a result, the modern organisation Dublin Port has a long and remarkable history, dating back over 300 years from 1707.

Where was the original Dublin Port located?

The original Port of Dublin was situated upriver, a few miles from its current location near the modern Civic Offices at Wood Quay and close to Christchurch Cathedral. The Port remained close to that area until the new Custom House opened in the 1790s. In medieval times Dublin shipped cattle hides to Britain and the continent, and the returning ships carried wine, pottery and other goods.

How big is Dublin Port?

510 acres. The modern Dublin Port is located either side of the River Liffey, out to its mouth. On the north side of the river, the central part (205 hectares or 510 acres) of the Port lies at the end of East Wall and North Wall, from Alexandra Quay.

Who owns Dublin Port?

Dublin Port Company is a State-owned commercial company responsible for operating and developing Dublin Port.

What is Dublin Port Company?

Dublin Port Company is a self-financing, and profitable private limited company wholly-owned by the State, whose business is to manage Dublin Port, Ireland's premier Port. Established as a corporate entity in 1997, Dublin Port Company is responsible for the management, control, operation and development of the Port.

Name someone famous connected to Dublin Port?

Captain William Bligh (of Mutiny of the Bounty fame) was a visitor to Dublin in 1800, and his visit to the capital had a lasting effect on the Port. Bligh's study of the currents in Dublin Bay provided the basis for the construction of the North Wall. This undertaking led to the growth of Bull Island to its present size.

Is Dublin the largest Port in Ireland?

Yes. Dublin Port is the largest freight and passenger port in Ireland. It handles almost 50% of all trade in the Republic of Ireland.

Who handles the Cargo in Dublin Port?

All cargo handling activities being carried out by private sector companies operating in intensely competitive markets within the Port. Dublin Port Company provides world-class facilities, services, accommodation and lands in the harbour for ships, goods and passengers.

Who is the Chief Executive of Dublin Port?

Eamonn O'Reilly is the Dublin Port Chief Executive.

Who is the Harbour Master of Dublin Port?

Capt. Michael McKenna is the Dublin Port Harbour Master

How many passengers come through Dublin Port each year?

In 2019, 1,949,229 people came through the Port.

How many cruise liners arrive in Dublin Port?

In 2019, there were 158 cruise liner visits.

How many tonnes of exports were shipped by Dublin Port?

In 2019, 9.4 million gross tonnes of exports were handled by Dublin Port.

How many ships arrive at Dublin Port each year?

In 2019, there were 7,898 ship arrivals.

What is the total throughput of goods at Dublin Port?

In 2019, there was a gross tonnage of 38.1 million.

How many tourist vehicles come through Dublin Port?

In 2019, there were 559,506 tourist vehicles.

How many trade vehicles come through Dublin Port?

There were 98,897 lorries in 2019

Can pleasure craft enter Dublin Port?

Boats can navigate the River Liffey into Dublin by using the navigational guidelines. Find the guidelines on this page here.

What is the VHF Channel for Dublin Port control?

VHF channel 12. Commercial vessels using Dublin Port or Dun Laoghaire Port typically have a qualified pilot or certified master with proven local knowledge on board. They "listen out" on VHF channel 12 when in Dublin Port's jurisdiction.

Is there a Dublin Bay webcam?

A Dublin Bay webcam showing the south of the Bay at Dun Laoghaire and a distant view of Dublin Port Shipping is here

What is Dublin Port’s 'distributed museum'?

Dublin Port is creating a distributed museum on its lands in Dublin City.  A Liffey Tolka Project cycle and pedestrian way is the key to link the elements of this distributed museum together. The distributed museum starts at the Diving Bell and, over the course of 6.3km, will give Dubliners a real sense of the City, the Port and the Bay. For visitors, it will be a unique eye-opening stroll and vista through and alongside one of Europe’s busiest ports: Diving Bell along Sir John Rogerson’s Quay over the Samuel Beckett Bridge, past the Scherzer Bridge and down the North Wall Quay campshire to Berth 18 - 1.2 km. Liffey Tolka Project - Tree-lined pedestrian and cycle route between the River Liffey and the Tolka Estuary - 1.4 km with a 300-metre spur along Alexandra Road to The Pumphouse (to be completed by Q1 2021) and another 200 metres to The Flour Mill. Tolka Estuary Greenway - Construction of Phase 1 (1.9 km) starts in December 2020 and will be completed by Spring 2022. Phase 2 (1.3 km) will be delivered within the following five years. The Pumphouse is a heritage zone being created as part of the Alexandra Basin Redevelopment Project. The first phase of 1.6 acres will be completed in early 2021 and will include historical port equipment and buildings and a large open space for exhibitions and performances. It will be expanded in a subsequent phase to incorporate the Victorian Graving Dock No. 1 which will be excavated and revealed.   The largest component of the distributed museum will be The Flour Mill. This involves the redevelopment of the former Odlums Flour Mill on Alexandra Road based on a masterplan completed by Grafton Architects to provide a mix of port operational uses, a National Maritime Archive, two 300 seat performance venues, working and studio spaces for artists and exhibition spaces. The Flour Mill will be developed in stages over the remaining twenty years of Masterplan 2040 alongside major port infrastructure projects.