Explore the depths of Dublin Bay, from Killiney to Howth, in remarkable detail thanks to a new addition to INFOMAR’s Bluescale Map Series.

As previously reported on Afloat.ie, the collection when complete will comprise 18 high-resolution bathymetric maps highlighting the topography of Ireland’s coastal waters in unprecedented detail.

The newest high-resolution map highlights the unique and intricate landscapes that lie beneath the waves of Ireland’s capital, from Ireland’s Eye to Dalkey Island.

Co Dublin has a coastline of approximately 170km and showcases some of the Ireland’s most unique coastal landscapes. The latest in the new map series is the bluescale bathymetric map of Dublin Bay, which reveals the iconic Irish Sea and complex sandbanks across the capital’s coastline.

Dublin Bay is a C-shaped inlet of the Irish Sea on Ireland’s east coast, spanning approximately 10km wide at its base and 7km in length from Howth Head to Dalkey Island.

Detail of Howth Head on the north side of Dublin Bay, highlighting some of the numerous shipwrecks mapped by INFOMAR in the Irish Sea | Credit: INFOMAR

The bay encompasses notable features such as North Bull Island, housing a 5km sandy beach known as Dollymount Strand and an internationally recognised wildfowl reserve.

Dublin Bay once had two inshore sand banks, the North Bull and the South Bull; the construction of the Bull Wall resulted in the rapid formation of North Bull Island, while the Great South Wall failed to create an island, leaving the South Bull as mud flats and strand.

Offshore, there are additional sandbanks, including Kish Bank with its lighthouse. 135 Clontarf or Mud Island, previously depicted on maps, has since disappeared.

INFOMAR is making this and all other maps in the Bluescale Map Series available for free to the public to download in high resolution JPEG format. Follow the journey each week until mid December as a new map is released on the INFOMAR website and join the conversation on Twitter, Instagram and Facebook.

See the iconic Wexford coastline, from Hook Head to Carnsore Point, in remarkable detail thanks to a new series of maps added to INFOMAR’s Bluescale Map Series.

As previously reported on Afloat.ie, the collection will comprise 18 high-resolution bathymetric maps highlighting the topography of Ireland’s coastal waters in unprecedented detail.

The latest high-resolution maps, charting the area from Rosslare Harbour to Cahore Point, highlight the unique and intricate landscapes that lie beneath the waves.

Co Wexford has a coastline of some 273km and showcases some of the Ireland’s most unique coastal landscapes.

The first of the Model County maps, released on Friday 3 November, is the Bluescale bathymetric map of Hook Head.

Historically called Rindowan, Hook Head is a headland on the east side of the estuary of The Three Sisters (Rivers Nore, Suir and Barrow). It is part of the Hook Peninsula and is adjacent to the historic townland of Loftus Hall.

This area is the location of Hook Lighthouse, the oldest working lighthouse in the world and one of 70 lighthouses operated by the Commissioners of Irish Lights around the coast of Ireland, playing a vital role in maritime safety.

The Hook Peninsula is composed of many rock types including sedimentary limestone and sandstone. The outcrops around Hook Head consist of abundant exposures of Lower Carboniferous rocks in foreshore platforms, containing beautifully preserved crinoids, bryozoans, bivalves, corals and brachiopods.

An excerpt from the bluescale map of Carnsore Point and environs in Co Wexford that will be released by INFOMAR on Friday 10 November

Next Friday (10 November) the second Model County map, of Carnsore Point, will be made available.

Carnsore Point is marks the southernmost point of the Irish Sea, on the western side of St George’s Channel. A large, offshore area wrapped around the point is a Marine Protected Area (MPA) for its reefs and species-rich underwater life.

The intertidal and offshore reefs are formed of Carnsore granite, a coarse pinkish-brown rock, and range from very exposed to moderately exposed to wave action. In water at depths of 11-30m there are excellent examples of sea squirt communities. Intricate sandbanks lie due east of the headland and north into the Irish Sea.

Since 2006, INFOMAR’s seabed mapping efforts have been instrumental in enhancing our understanding of Ireland's underwater landscape.

The Bluescale Map series offers a new and unique way not only to showcase the mapping effort to date, but also to visualise and communicate complex scientific information to the wider public.

As with all INFOMAR data, these high-resolution maps are available for free to download and have huge potential to communicate with local coastal communities and raise awareness on the importance of maintaining the health and integrity of our marine environment.

INFOMAR is making all 18 maps available for free to the public to download in high resolution JPEG format. Follow the journey each week until mid December as a new map is released on the INFOMAR website and join the conversation on Twitter, Instagram and Facebook.

INFOMAR, Ireland’s national seabed mapping programme, has released its latest data update which encompasses essential enhancements including higher resolution data of the Irish continental shelf and offshore areas.

“This valuable update marks a significant stride in providing comprehensive and up-to-date information on Ireland’s seabed, crucial for various marine-related activities, including navigation, resource management, offshore renewable energy and environmental conservation,” said Thomas Furey, joint programme manager at the Marine Institute.

Key highlights of the latest INFOMAR data release include:

• 2m Survey Leg Data: The inclusion of newly derived 2m survey leg data offers increased availability for the Irish inshore, with planned regular updates during the coming months.
• Merged Surfaces (Bathymetry): INFOMAR now provides merged bathymetric surfaces at 5m, 10m and 25m resolutions for the Irish Shelf (0-200m water depth). 25m and 100m Resolution data is also available for the Irish Offshore (>200m water depth).
• Merged Surfaces (Backscatter): A single, homogenised backscatter surface at 40m resolution is available for the offshore, with 10m resolution available for inshore areas.

All bathymetric and backscatter datasets are now available in a three-star open standard format which improves user access across all GIS environments. All data is available for download or via a data request through INFOMAR’s data download portal.

INFOMAR has also updated various facets of its website to include new vector data, imagery, standard operating procedures and value-added products.

Sean Cullen, joint programme manager at the Geological Survey Ireland said: “INFOMAR [is] committed to providing accurate, accessible and up-to-date marine data to support Ireland’s maritime stakeholders. INFOMAR encourages users to explore and utilise this data for scientific research, maritime planning and decision-making processes.”

Surveyors for the INFOMAR seabed mapping programme have reported the detection of two obstructions on the Atlantic floor some 30 nautical miles west of Co Galway.

Marine Institute research operations manager Aodán Fitzgerald told RTÉ News that these obstructions are likely shipwrecks.

“There are thousands of these in Irish waters,” he said. “However as these are fishing areas, we issued a notice to advise fishermen with towed fishing gear to avoid the areas.”

As previously reported on Afloat.ie, a series of seabed mapping surveys was launched in February this year, with the RV Tom Crean recruited to carry out operations west of west of Kerry, Clare and Galway outside the 30nm limit.

The State’s latest marine research vessel found one of the objects around 80km west of the Aran Islands in Galway Bay, and the other 70km west of Loop Head in Co Clare.

Coordinates for the obstructions are included in Marine Notice No 64 of 2023, attached below.

INFOMAR, a joint venture by the Geological Survey Ireland and the Marine Institute, has launched a collection of 18 high-resolution bathymetric maps of Ireland’s coastal waters. The Blue Scale Map Series is the culmination of over a decade of work and highlights the unique and intricate landscapes lying beneath the waves. 

Each week, INFOMAR will release a new map of a different section of the Irish coastline. The latest in the series is the blue scale bathymetric map of Loop Head, County Clare on the Shannon Estuary. 

The area was first surveyed in 2009 on board the RV Celtic Voyager, with the INFOMAR team mapping a total of 162km2 of seabed along the River Shannon and west of Loop Head. Mapping continued in the region on board the RV Celtic Voyager, RV Keary, RV Geo & MV Cosantóir Bradán between 2011 – 2014, resulting in an area of over 2000km2 of previously unmapped Clare coastal waters being surveyed in high resolution.

Earlier this year, INFOMAR’s inshore team, on board the RV Galtee, continued mapping shallower waters beneath the Iconic Cliffs of Moher, Liscannor Bay and Kilstiffin Reef.

The Blue Scale Map Series offers a new and unique way not only to showcase the mapping effort to date but also to visualize and communicate complex scientific information to the wider public. As with all INFOMAR data, these high-resolution maps are available for free to download and have huge potential to communicate with local coastal communities and raise awareness of the importance of maintaining the health and integrity of our marine environment.

Ireland’s coastline is approximately 3,171km in length and boasts some of the most unique and dynamic marine environments in Europe. Since 2006, INFOMAR’s seabed mapping efforts have been instrumental in enhancing our understanding of Ireland's underwater landscape. The Blue Scale Map Series not only highlights the topography of the coast in remarkable detail but also paves the way for the future management of Ireland’s marine resource.

Download a high res version of the image here

INFOMAR has launched its Bluescale Map Series — a collection that will comprise 18 high-resolution bathymetric maps highlighting the topography of Ireland’s coastal waters in unprecedented detail.

The series is the culmination of over a decade of work and highlights the intricate landscapes that lie beneath the waves.

Developed by a dedicated team of hydrographers, data processors and cartographers, each map is carefully drawn to include the latest high-resolution INFOMAR bathymetry data.

From this week until mid December, INFOMAR will be releasing a new map of a different section of Ireland’s 3,171km coastline, which boasts some of the most unique and dynamic environments in Europe, to download for free.

The first in the series is the bluescale bathymetric map of Galway Bay. Follow the journey each week as a new map is released on the INFOMAR website and join the conversation on Twitter, Instagram and Facebook.

In 2006, the INFOMAR (Integrated Mapping for the Sustainable Development of Ireland’s Marine Resource) programme was established and is currently one of the world’s largest and leading seabed mapping programmes.

Funded by the Department of the Environment, Climate and Communications, the programme is a joint venture by the Marine Institute and Geological Survey Ireland and aims to map Ireland’s seabed and deliver a comprehensive baseline bathymetry dataset to underpin the future management of Ireland’s marine resource.

Geological Survey Ireland (GSI) and the Marine Institute have issued their schedule of hydrographic and geophysical survey operations to be undertaken by INFOMAR in the Celtic Sea, Atlantic Ocean, western coastal areas and Irish Sea areas between March and November this year, subject to weather and operational constraints.

The INFOMAR Programme (Integrated Mapping for the Sustainable Development of Ireland’s Marine Resource) is a jointly managed seabed mapping initiative between GSI and the Marine Institute, funded by the Department of the Environment, Climate and Communications.

Covering some 125,000 sq km of underwater territory, INFOMAR will produce integrated mapping products covering the physical, chemical, and biological features of the seabed.

RVs Keary, Geo, Mallet, Galtee and Lir, operated by GSI, are expected to carry out survey operations in three areas: in the Atlantic Ocean, west of counties Kerry, Clare, Galway and Mayo; an offshore area northwest of Belmullet, Co Mayo and western coastal areas stretching from Galway Bay to Malin Head, Co Donegal; and the Irish Sea adjacent to the Ireland/UK border from east of Co Dublin to east of Co Wexford and in coastal areas of Co Dublin.

Meanwhile the RV Tom Crean, operated by the Marine Institute, is expected to carry out survey operations in the Celtic Sea, south of the 30-nautical-mile limit and potentially in the Atlantic Ocean west of Kerry, Clare and Galway, west of the 30nm limit.

For more details on these surveys, including scheduled dates and coordinates, see Marine Notice No 13 of 2023 attached below.

INFOMAR will conduct a programme of hydrographic and geophysical surveys in the Celtic Sea, Atlantic Ocean, Irish Sea and western coastal areas between March and November this year.

Covering some 125,000sqkm of underwater territory, INFOMAR (Integrated Mapping for the Sustainable Development of Ireland’s Marine Resource) aims to produce integrated mapping products covering the physical, chemical and biological features of the seabed.

Along the lines of last year’s surveys, the 2022 operation will involve research vessels from Geological Survey Ireland (Keary, Geo, Lir, Galtee and Mallet) and the Marine Institute (Celtic Voyager and either the Celtic Explorer or the new RV Tom Crean) in a variety of surveys.

All vessels will display appropriate lights and markers, and will be listening on VHF Channel 16 throughout the course of the survey.

The Marine Institute vessels will also each be towing a magnetometer sensor with a single cable of up to 200 metres in length, and a moving vessel profiler cable of variable length up to a maximum of 200 metres.

Further details — including coordinates, maps and contact information — can be found in Marine Notice No 11 of 2022 which is attached below.

The latest Marine Notice from the Department of Transport advises that INFOMAR will undertake a hydrographic and geographic survey operation in the Celtic Sea and Atlantic Ocean for six months from this April.

The massive operation will involve research vessels from Geological Survey Ireland (Keary, Geo, Lir, Gale and Mallet) and the Marine Institute (Celtic Voyager and Celtic Explorer) in a variety of surveys — along the South-West Coast from Roaringwater Bay to Kilkee, and offshore south of Mizen Head and between Kerry Head and the Aran Islands.

All vessels will be listening on VHF Channel 16 throughout the survey, and will display appropriate lights and markers. The RVs Celtic Voyager and Celtic Explorer will also be towing a magnetometer sensor with a single cable up to 200m in length, and a moving vessel profiler cable of variable length up to 200m.

Full details of the surveys, including dates, maps and coordinates, can be found in Marine Notice No 10 of 2021, a PDF of which can be downloaded below.

Ireland’s internationally important seabed mapping project has been profiled in The Irish Times as it enters the final years of its mission to fully chart the nation’s marine territory.

INFOMAR, a joint initiative of the Marine Institute and Geological Survey Ireland, is the latest iteration of a more than 20-year effort to map what’s one the largest seabed territories in Europe — an achievement that would also be a world first.

Making use of a range of research vessels, including the RV Celtic Explorer, INFOMAR regularly samples and collates data from the depths using a variety of techniques like multibeam sonar.

Experts use this data for models that are critical for the planning of offshore infrastructure such as undersea cables and wind farms — as well as the study of wildlife habitats and development in coastal communities.

And the project has even inspired a new Master’s degree course that aims to produce the next generation of marine mapping specialists.

The Irish Times has much more on the story HERE.