Menu

Ireland's sailing, boating & maritime magazine

Inland afloat headers

 

Displaying items by tag: Seabed Mapping

Ireland is on course to become the first country in the world to complete seabed mapping.

The mapping of the seabed off the Burren and the Cliffs of Moher on the Clare coast will be one of the keynote topics at Geopark Academy 2024, a two-day conference organised by the Burren and Cliffs of Moher UNESCO Global Geopark as part of European Geoparks Network Week to be held on Saturday, May 25 and Sunday, May 26.

Limestone rocks were formed in shallow, warm, tropical seas there, 10 degrees South of the Equator, 330 million years ago.

Geological Survey Ireland (GSI) will provide an update on its groundbreaking seabed mapping project at the event, which will be held at the Burren College of Art in Ballyvaughan. This year, the college is marking its 30th anniversary of foundation.

Felim O’Toole, a Hydrographic Surveyor with GSI, will be one of the keynote speakers and will update on the Integrated Mapping for the Sustainable Development of Ireland’s Marine Resource (INFOMAR) project, which has been mapping Ireland’s coastal seabed in comprehensive detail. The INFOMAR programme team, which includes the Marine Institute, aims to complete Ireland’s seabed mapping by the end of 2026, when it could be the first country globally to do so. Mr. O’Toole’s talk will focus on mapping the seabed off the Burren and Cliffs of Moher.

Dr. Eamon Doyle, a Geologist with the UNESCO Global Geopark, who will open the conference, says the Burren holds many “fascinating clues to conditions on Earth more than 300 million years ago. The oldest rocks visible on the Burren’s surface were formed during the Carboniferous period, approximately 330 million years ago. These limestone rocks formed in shallow, warm, tropical seas. Scientists come from all over the world to see what we have here.”

Published in Coastal Notes
Tagged under

Ireland’s national seabed mapping programme, INFOMAR completes its Bluescale Map Series with the release of its stunning map of the Aran Islands.

Now all 18 maps in the series are available for free to the public, in English and now as Gaeilge.

Staring on 11 August this year, INFOMAR released a new instalment each week in its series of bespoke, high-resolution bathymetric maps of Irish coastal waters.

Developed by a dedicated team of hydrographers, data processors and cartographers, the maps highlight the topography of the coast in remarkable detail.

Thomas Furey, INFOMAR joint programme manager at the Marine Institute, emphasised the dual significance of this release.

“The Bluescale Map Series is a testament on our commitment to both data quality and improving public accessibility of data,” he said. “The release of all maps as Gaeilge also represents our efforts in promoting linguistic inclusivity and connecting with Gaeltacht communities nationwide.”

The full map of the Aran Islands and Galway Bay in the Irish language, released along with all 17 other maps as Gaeilge | Credit: INFOMARThe full map of the Aran Islands and Galway Bay in the Irish language, released along with all 17 other maps as Gaeilge | Credit: INFOMAR

The series’ final map of the Aran Islands showcases some of Ireland’s most unique and dynamic coastal landscapes.

The Aran Islands are a group of three islands at the mouth of Galway Bay, off the West Coast of Ireland, with a total area around 46 sq km (18 sq mi). From west to east, the islands are Inis Mór (Árainn), which is the largest; Inis Meáin, the second-largest; and Inis Oírr, the smallest. There are also several islets.

The islands’ geology is mainly karst limestone, related to the Burren in Co Clare to the east, not the granites of Connemara to the north. Solutional processes have widened and deepened the grykes of the limestone pavement.

Pre-existing lines of weakness in the rock (vertical joints) contribute to the formation of extensive fissures separated by clints (flat, pavement-like slabs). The rock karstification facilitates the formation of subterranean drainage.

Speaking about the addition of maps as Gaeilge, Seán Cullen, INFOMAR joint programme manager at the Geological Survey Ireland said: “These maps aim to offer Irish Speakers an opportunity to engage with marine science in their native tongue and provide a means of communicating complex scientific data to the broader public.”

Michael Gillooly, interim CEO of the Marine Institute added: “The Gaeltacht constitutes 25% of the overall Irish coastline so I am delighted to see this new series of unique maps now available as Gaeilge.”

Published in Environment

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: INFOMARDetail 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.

Published in Environment

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 NovemberAn 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.

Published in Coastal Notes

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.”

Published in Marine Science
Tagged under

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.

Published in Environment

The latest Marine Notice from the Department of Transport advises that the Informing and Mapping the Offshore Renewable Environment (I-MORE) Survey will be carried out in the North Irish Sea from early in the New Year.

From 4-13 January 2022, the RV Celtic Explorer (callsign EIGB) will carry out the survey on a 24-hour schedule using the Manta–200 Seabed Cone Penetration Testing (CPT) system.

The aim of this survey is to gather critical seabed data to feed into existing postdoc and group research across a range of disciplines, including marine geotechnics and physical geology, to better understand the geology and engineering properties of the sediment in this area and to identify potential geohazards to infrastructure development.

Map of the proposed iMORE survey areaMap of the proposed iMORE survey area

Coodinates of the survey area and other details can be found in Marine Notice No 66 of 2021, available to download below.

Published in Marine Science

#MarineScience - The extensive work carried out jointly by the Marine Institute and Geological Survey Ireland through the INFOMAR programme received substantial exposure and recognition at the 16th Forum for the Exchange of Mutual Multibeam Experiences (FEMME) in Bordeaux last week.

Hosted by the Kongsberg Maritime User Forum and focussing on seabed mapping, FEMME provides an international platform for hydrographic professionals to meet, exchange experiences and ideas, provide inspiration and contribute to improved system performance and the future of underwater mapping technologies.

High-profile attendees include the secretary general of the International Hydrographic Organization (IHO), chief hydrographers from the Service Hydrographique et Océanographique de la Marine (SHOM), and Seabed 2030 leaders.

An overview of the Department of Communications, Climate Action and Environment-funded INFOMAR programme was provided by Dr Fabio Sacchetti, who updated the audience on future plans as well as recent achievements of the Irish national seabed mapping initiative.

Dr Sacchetti highlighted 10 case studies featuring multiple applications of multibeam technologies in support of sectors including coastal engineering, marine conservation and marine heritage and tourism.

In addition, a recent high-profile collaboration between INFOMAR and various US and Canadian research institutes was presented by international research partners in attendance.

INFOMAR featured prominently in a talk by Prof John Hughes Clarke (CCOM/University of New Hampshire) when describing research into the impact of internal wave activity on multibeam bathymetry in an Irish/Celtic Sea context, based on work conducted onboard the RV Celtic Explorer.

Prof Clarke has been collaborating with INFOMAR since 2015, and he is particularly focused on using hydrographic and fisheries sonar systems, combined with oceanographic data, to gain a deeper understanding of the dynamics and complexities of the Celtic Sea.

Jose Cordero, of Instituto Hidrografico dela Marina (Spain), demonstrated how improved sound speed control through remotely detecting thermocline undulations can be achieved.

The study was the result of a collaboration carried out in 2017 onboard the RV Celtic Explorer during a routine INFOMAR survey.

Finally, Anand D Hiroji (HSRC/University of Southern Mississippi) showed how unambiguous radiation pattern extraction methods can improve data derived from multisector multibeam Sonars. Once again, this study was carried out using data acquired by INFOMAR onboard the RV Celtic Explorer.

As Ireland continues toward completion of its seabed mapping programme in 2026, the Marine Institute says it is “widely acknowledged internationally” that our best practice approach towards open and integrated data acquisition, integration and exploitation “is a valued model, and one which gives Irish researchers and technology developers a global audience, and market.”

Published in Marine Science

#MarineScience - The Marine Institute has welcomed commitments of €6 million in funding for seabed mapping and marine research announced at the fourth Our Ocean Conference in Malta last week.

Ciaran Cannon, Minister of State for International Development, addressed representatives from more than 200 countries at the EU conference, stressing the importance of promoting and protecting the world's marine resources for present and future generations.

Aside from the new funding for mapping and research, Minister Cannon also announced the roll-out of a 'groundbreaking' Global Citizenship marine environment education module for school children from September 2017 onwards.

“This programme will increase ocean literacy by fostering understanding of the important role our oceans play in our lives, how individual actions can affect them and how we can act together to protect them,” he said.

Marine Institute chief executive Dr Peter Heffernan explained that the new module supports the aims of the institute’s own Explorers Education Programme “to build on Ireland's marine and maritime heritage by increasing awareness of the value, opportunities and social benefits of our ocean wealth and identity.”

Meanwhile, Minister Cannon committed to €320,000 in funding to the 2017 Clean Coasts programme and its more than 550 volunteer groups established in Ireland to date.

Also noted was an expansion of the 2015 Fishing for Litter programme, and continued contributions to support developing countries engagement at the UN on issues relating to marine governance.

In addition, Minister Cannon reaffirmed Ireland's commitment to prohibit the sale or manufacture of certain products containing microbeads, announced at the UN in June of this year.

Published in Marine Science

#MarineNotice - Mariners of the South Coast are advised that PSE Kinsale Energy will undertake a seabed mapping survey in the Kinsale Head and Seven Heads Gas Fields next week.

The survey is expected to begin on Monday 12 June and last for five or six days, subject to weather conditions.

The multi-beam mapping survey is to confirm the seabed status adjacent to subsea gas production infrastructure such as wellheads, manifolds and jacket/platform structures, collecting data for ongoing field maintenance operations and future planning.

The RV Celtic Voyager (Callsign EIQN) is scheduled to carry out the survey operations at specific locations to assess the status of the subsea infrastructure in relation to the adjacent seabed. A total of 15 multi-beam mapping locations are anticipated.

There will be a regular safety message broadcasting on VHF Channel 16 throughout the project. All vessels, particularly those engaged in fishing, are requested to give the RV Celtic
Voyager a wide berth and keep a sharp lookout in the relevant areas.

Full details of the survey area are included in Marine Notice No 24 of 2017, a PDF of which is available to read or download HERE.

Published in News Update
Page 1 of 2

General Information on using Waterways Ireland inland navigations

Safety on the Water

All users of the navigations are strongly recommended to make themselves aware of safety on the water for whatever activity they are involved in and to read the advice offered by the various governing bodies and by:

The Dept. of Transport, Ireland: www.gov.ie/transport and The Maritime and Coastguard Agency, UK, The RNLI – Water Safety Ireland for information in terms of drowning prevention and water safety.

Registration of Vessels

All vessels using the Shannon Navigation, which includes the Shannon-Erne Waterways and the Erne System must be registered with Waterways Ireland. Only open undecked boats with an engine of 15 horsepower or less on the Shannon Navigation, and vessels of 10 horsepower or less on the Erne System, are exempt. Registration is free of charge.

Craft registration should be completed online at: https://www.waterwaysireland.org/online-services/craft-registration

Permits for use of the Grand and Royal Canals and the Barrow Navigation

All vessels using the Grand and Royal Canals and the Barrow Navigation must display appropriate valid Permit(s) i.e A Combined Mooring and Passage Permit (€126) and if not intending to move every five days, an Extended Mooring Permit (€152).

Permit applications should be completed online at: https://www.waterwaysireland.org/online-services/canal-permits

Passage on the Royal and Grand Canals – Dublin Area

For boat passage through the locks east of Lock 12 into / out of Dublin on either the Royal or Grand Canals, Masters are requested to contact the Waterways Ireland Eastern Regional Office (M-F 9.30am-4.30pm) on tel: +353(0)1 868 0148 or email [email protected] prior to making passage in order to plan the necessary lock-keeping assistance arrangements.

On the Grand Canal a minimum of two days notice prior to the planned passage should be given, masters should note that with the exception of pre-arranged events, a maximum of 2 boats per day will be taken through the locks, travelling either east or west.

Movements in or out of the city will be organised by prior arrangement to take place as a single movement in one day. Boaters will be facilitated to travel the system if their passage is considered to be safe by Waterways Ireland and they have the valid permit(s) for mooring and passage.

Newcomen Lifting Bridge

On the Royal Canal two weeks’ notice of bridge passage (Newcomen Lifting Bridge) is required for the pre-set lift date, and lock assistance will then also be arranged. A minimum of 2 boats is required for a bridge lift to go ahead.

Waterways Ireland Eastern Regional Office (Tel: +353(0)1 868 0148 or [email protected] ) is the point of contact for the bridge lift.

A maximum number of boats passing will be implemented to keep to the times given above for the planned lifts (16 for the Sat / Sun lifts & 8 for the weekday lifts). Priority will be given on a first come first served basis.

On day of lift, boaters and passengers must follow guidance from Waterways Ireland staff about sequence of passage under bridge & through Lock 1, and must remain within signed and designated areas.

Events Held on the Waterways

All organised events taking place on the waterways must have the prior approval of Waterways Ireland. This is a twelve week process and application forms must be accompanied with the appropriate insurance, signed indemnity and risk assessment. The application should be completed on the Waterways Ireland events page at :

https://www.waterwaysireland.org/online-services/event-approval

Time Limits on Mooring in Public Harbours

On the Shannon Navigation and the Shannon-Erne Waterway craft may berth in public harbours for five consecutive days or a total of seven days in any one month.

On the Erne System, revised Bye Laws state that: No master or owner shall permit a vessel, boat or any floating or sunken object to remain moored at or in the vicinity of any public mooring, including mooring at any other public mooring within 3 kilometres of that location, for more than 3 consecutive days and shall not moor at that same mooring or any other public mooring within 3 kilometres of that location within the following 3 consecutive days without prior permission by an authorised official.

Winter Mooring on the Shannon Navigation and Shannon Erne Waterway

Winter mooring may be availed of by owners during the period 1 Nov to 31 Mar by prior arrangement and payment of a charge of €63.50 per craft. Craft not availing of Winter Mooring must continue to comply with the “5 Day Rule”. Winter Mooring applications should be completed online at : https://www.waterwaysireland.org/online-services/winter-moorings-booking

Owners should be aware that electricity supply and water supply to public moorings is disconnected for the winter months. This is to protect against frost damage, to reduce running costs and to minimise maintenance requirements during the winter months.

Vessel owners are advised that advance purchasing of electricity on the power bollards leading up to the disconnection date should be minimal. Electricity credit existing on the bollards will not be recoverable after the winter decommissioning date. Both services will be reinstated prior to the commencement of the next boating season.

Smart Cards

Waterways Ireland smart cards are used to operate locks on the Shannon Erne Waterway, to access the service blocks, to use the pump-outs along the navigations, to avail of electrical power at Waterways Ireland jetties.

Berthing in Public Harbours

Masters are reminded of the following:

  • Equip their vessel with mooring lines of appropriate length and strength and only secure their craft to mooring bollards and cleats provided for this purpose.
  • Ensure the available berth is suitable to the length of your vessel, do not overhang the mooring especially on finger moorings on floating pontoon moorings.
  • Ensure mooring lines, electric cables and fresh water hoses do not create a trip hazard on public jetties for others users.
  • Carry sufficient fenders to prevent damage to your own vessel, other vessels and WI property.
  • Allow sufficient space between your vessel and the vessel ahead /astern (c.1m) for fire safety purposes and /or to recover somebody from the water.
  • Do not berth more than two vessels side by side and ensure there is safe access/egress at all times between vessels and onto the harbour itself.
  • Do not berth in such a way to prevent use of harbour safety ladders, slipways or pump-outs.
  • Do not allow the bow of your vessel to overhang the walkway of a floating mooring thus creating a hazard for others with an overhanging anchor or bow fendering.
  • Animals are not allowed to be loose or stray at any time.
  • Harbour and jetty infrastructure such as railings, power pedestals, fresh water taps, electric light poles, safety bollards, ladders etc are not designed for the purpose of mooring craft , they will not bear the strain of a vessel and will be damaged.
  • At Carrybridge on the Erne System, Masters of vessels are not permitted to use stern on mooring. Masters of vessels must use the mooring fingers for mooring of vessels and for embarkation / disembarkation from vessels.

Passenger Vessel Berths

Masters of vessels should not berth on passenger vessel berths where it is indicated that an arrival is imminent. Passenger vessels plying the navigations generally only occupy the berths to embark and disembark passengers and rarely remain on the berths for extended periods or overnight.

Lock Lead-in Jetties

Lead-in jetties adjacent to the upstream and downstream gates at lock chambers are solely for the purpose of craft waiting to use the lock and should not be used for long term berthing.

Vessel Wake

Vessel wake, that is, the wave generated by the passage of the boat through the water, can sometimes be large, powerful and destructive depending on the hull shape and engine power of the vessel. This wake can be detrimental to other users of the navigation when it strikes their craft or inundates the shoreline or riverbank. Masters are requested to frequently look behind and check the effect of their wake / wash particularly when passing moored vessels, on entering harbours and approaching jetties and to be aware of people pursuing other activities such as fishing on the riverbank.

Speed Restriction

A vessel or boat shall not be navigated on the Shannon Navigation at a speed in excess of 5 kph when within 200 metres of a bridge, quay, jetty or wharf, when in a harbour or canal or when passing within 100 metres of a moored vessel or boat.

Vessels navigating the Shannon-Erne Waterway should observe the general 5 kph speed limit which applies along the waterway. This is necessary in order to prevent damage to the banks caused by excessive wash from vessels.

Vessels navigating the Erne System should observe the statutory 5kt / 6mph / 10kph speed limit areas.

A craft on the Royal and Grand canals shall not be navigated at a speed in excess of 6km per hour.

A craft on the Barrow Navigation shall not be navigated at a speed in excess of 11km per hour except as necessary for safe navigation in conditions of fast flow.

Bank Erosion

Narrow sections of all the navigations are particularly prone to bank erosion due to the large wash generated by some craft. Masters are requested to be vigilant and to slow down to a speed sufficient to maintain steerage when they observe the wash of their craft inundating the river banks.

Unusual Waterborne Activity

Unusual waterborne vessels may be encountered from time to time, such as, hovercraft or amphibious aircraft / seaplanes. Masters of such craft are reminded to apply the normal “Rule of the Road” when they meet conventional craft on the water and to allow extra room to manoeuvre in the interest of safety.

Sailing Activity

Mariners will encounter large numbers of sailing dinghies from late June to August in the vicinity of Lough Derg, Lough Ree and Lower Lough Erne. Sailing courses are marked by yellow buoys to suit weather conditions on the day. Vessels should proceed at slow speed and with due caution and observe the rules of navigation when passing these fleets, as many of the participants are junior sailors under training.

Rowing

Mariners should expect to meet canoes and vessels under oars on any part of the navigations, but more so in the vicinity of Athlone, Carrick-on-Shannon, Coleraine, Enniskillen and Limerick. Masters are reminded to proceed at slow speed and especially to reduce their wash to a minimum when passing these craft as they can be easily upset and swamped due to their very low freeboard and always be prepared to give way in any given traffic situation.

Canoeing

Canoeing is an adventure sport and participants are strongly recommended to seek the advice of the sport’s governing bodies i.e Canoeing Ireland and the Canoe Association of Northern Ireland, before venturing onto the navigations.

Persons in charge of canoes are reminded of the inherent danger to these craft associated with operating close to weirs, sluice gates, locks and other infrastructure particularly when rivers are in flood and large volumes of water are moving through the navigations due to general flood conditions or very heavy localised precipitation e.g. turbulent and broken water, stopper waves. Shooting weirs is prohibited without prior permission of Waterways Ireland.

Canoeists should check with lockkeepers prior entering a lock to ensure passage is done in a safe manner. Portage is required at all unmanned locks.

Canoe Trail Network – "Blueways"

Masters of powered craft are reminded that a canoe trail network is being developed across all navigations and to expect more organised canoeing along these trails necessitating slow speed and minimum wash when encountering canoeists, rowing boats etc

Rockingham and Drummans Island Canals – Lough Key

It is expected that work on Rockingham and Drummans Island Canals on Lough Key will be completed in 2021. Access to these canals will be for non-powered craft only, eg canoes, kayaks, rowing boats.

Fast Powerboats and Personal Watercraft (Jet Skis)

Masters of Fast Powerboats (speed greater than 17kts) and Personal Watercraft (i.e.Jet Skis) are reminded of the inherent dangers associated with high speed on the water and especially in the confines of small bays and narrow sections of the navigations. Keeping a proper look-out, making early alterations to course and /or reducing speed will avoid conflict with slower vessels using the navigation. Personal Watercraft are not permitted to be used on the canals.

Towing Waterskiers, Wakeboarders, Doughnuts etc

Masters of vessels engaged in any of these activities are reminded of the manoeuvring constraints imposed upon their vessel by the tow and of the added responsibilities that they have to the person(s) being towed. These activities should be conducted in areas which are clear of conflicting traffic. It is highly recommended that a person additional to the master be carried to act as a “look-out” to keep the tow under observation at all times.

Prohibition on Swimming

Swimming in the navigable channel, particularly at bridges, is dangerous and is prohibited due to the risk of being run over by a vessel underway in the navigation.

Age Restrictions on operating of powered craft

In the Republic of Ireland, Statutory Instrument 921 of 2005 provides the legal requirements regarding the minimum age for operating of powered craft. The Statutory Instrument contains the following requirements:

- The master or owner of a personal watercraft or a fast power craft shall take all reasonable steps to ensure that a person who has not attained the age of 16 years does not operate or control the craft

- The master or owner of a pleasure craft powered by an engine with a rating of more than 5 horse power or 3.7 kilowatts shall take all reasonable steps to ensure that a person who has not attained the age of 12 years does not operate or control the craft.

Lifejackets and Personal Flotation Devices (PFDs)

Lifejackets and PFD’s are the single most important items of personal protective equipment to be used on a vessel and should be worn especially when the vessel is being manoeuvred such as entering / departing a lock, anchoring, coming alongside or departing a jetty or quayside.

In the Republic of Ireland, Statutory Instrument 921 of 2005 provides the legal requirements regarding the wearing of Personal Flotation Devices. The Statutory Instrument contains the following requirements:

- The master or owner of a pleasure craft (other than a personal watercraft) shall ensure, that there are, at all times on board the craft, sufficient suitable personal flotation devices for each person on board.

- A person on a pleasure craft (other than a personal watercraft) of less than 7 metres length overall shall wear a suitable personal flotation device while on board an open craft or while on the deck of decked craft, other than when the craft is made fast to the shore or at anchor.

- The master or owner of a pleasure craft (other than a personal watercraft) shall take all reasonable steps to ensure that a person who has not attained the age of 16 years complies with paragraph above.

- The master or owner of a pleasure craft (other than a personal watercraft), shall take all reasonable steps to ensure that a person who has not attained the age of 16 years wears a suitable personal flotation device while on board an open craft or while on the deck of a decked craft other than when it is made fast to the shore or at anchor.

- The master or owner of a pleasure craft (other than a personal watercraft) shall take all reasonable steps to ensure that a person wears a suitable personal flotation device, at all times while – (a) being towed by the craft, (b) on board a vessel or object of any kind which is being towed by the craft.

Further information is available at: http://www.irishstatutebook.ie/eli/2005/si/921/made/en/print

Firing Range Danger Area – Lough Ree

The attention of mariners is drawn to the Irish Defence Forces Firing Range situated in the vicinity of buoys No’s 2 and 3, on Lough Ree on the Shannon Navigation. This range is used regularly for live firing exercises, throughout the year, all boats and vessels should stay clear of the area marked with yellow buoys showing a yellow "X" topmark and displaying the word "Danger".

Shannon Navigation, Portumna Swing Bridge Tolls

No attempt should be made by Masters’ of vessels to pay the bridge toll while making way through the bridge opening. Payment will only be taken by the Collector from Masters when they are secured alongside the jetties north and south of the bridge.

Navigating from Killaloe to Limerick on the Shannon Navigation

The navigation from Killaloe to Limerick involves passage through Ardnacrusha locks, the associated headrace and tailrace and the Abbey River into Limerick City. Careful passage planning is required to undertake this voyage. Considerations include: lock passage at Ardnacrusha, water flow in the navigation, airdraft under bridges on Abbey River in Limerick, state of tide in Limerick

Users are advised to contact the ESB Ardnacrusha hydroelectric power station (00353 (0)87 9970131) 48 hours in advance of commencing their journey to book passage through the locks at Ardnacrusha. It is NOT advised to undertake a voyage if more than one turbine is operating (20MW), due to the increased velocity of flow in the navigation channel, which can be dangerous. To ascertain automatically in real time how many turbines are running, users can phone +353 (0)87 6477229.

For safety reasons the ESB has advised that only powered craft with a capacity in excess of 5 knots are allowed to enter Ardnacrusha Headrace and Tailrace Canals.

Passage through Sarsfield Lock should be booked on +353-87-7972998, on the day prior to travel and it should be noted also that transit is not possible two hours either side of low water.

A Hydrographic survey in 2020 of the navigation channel revealed that the approach from Shannon Bridge to Sarsfield Lock and the Dock area has silted up. Masters of vessels and water users are advised to navigate to the Lock from Shannon bridge on a rising tide one or two hours before High Tide.

Lower Bann Navigation

The attention of all users is drawn to the “Users Code for the Lower Bann”, in particular to that section covering “Flow in the River” outlining the dangers for users both on the banks and in the navigation, associated with high flow rates when the river is in spate. Canoeists should consult and carry a copy of the “Lower Bann Canoe Trail” guide issued by the Canoe Association of Northern Ireland. Users should also contact the DfI Rivers Coleraine, who is responsible for regulating the flow rates on the river, for advisory information on the flow rates to be expected on any given day.

DfI Rivers Coleraine. Tel: 0044 28 7034 2357 Email: [email protected]

Lower Bann Navigation – Newferry – No wake zone

A No Wake Zone exists on the Lower Bann Navigation at Newferry. Masters of vessels are requested to proceed at a slow speed and create no wake while passing the jetties and slipways at Newferry.

Overhead Power Lines (OHPL) and Air draft

All Masters must be aware of the dangers associated with overhead power lines, in particular sailing vessels and workboats with cranes or large air drafts. Voyage planning is a necessity in order to identify the location of overhead lines crossing the navigation.

Overhead power line heights on the River Shannon are maintained at 12.6metres (40 feet) from Normal Summer level for that section of navigation, masters of vessels with a large air draft should proceed with caution and make additional allowances when water levels are high.

If a vessel or its equipment comes into contact with an OHPL the operator should NOT attempt to move the vessel or equipment. The conductor may still be alive or re-energise automatically. Maintain a safe distance and prevent third parties from approaching due to risk of arcing. Contact the emergency services for assistance.

Anglers are also reminded that a minimum ground distance of 30 metres should be maintained from overhead power lines when using a rod and line.

Submarine Cables and Pipes

Masters of vessels are reminded not to anchor their vessels in the vicinity of submarine cables or pipes in case they foul their anchor or damage the cables or pipes. Look to the river banks for signage indicating their presence.

Water Levels - Precautions

Low Water Levels:

When water levels fall below normal summer levels masters should be aware of:

Navigation

To reduce the risk of grounding masters should navigate on or near the centreline of the channel, avoid short cutting in dog-legged channels and navigating too close to navigation markers.

Proceeding at a slow speed will also reduce “squat” effect i.e. where the vessel tends to sit lower in the water as a consequence of higher speed.

Slipways

Reduced slipway length available under the water surface and the possibility of launching trailers dropping off the end of the concrete apron.

More slipway surface susceptible to weed growth requiring care while engaged in launching boats, from slipping and sliding on the slope. Note also that launching vehicles may not be able to get sufficient traction on the slipway once the craft is launched to get up the incline.

Bank Erosion

Very dry riverbanks are more susceptible to erosion from vessel wash.

Lock Share

Maximising on the number of vessels in a lock will ensure that the total volume of water moving downstream is decreased. Lock cycles should be used for vessels travelling each way.

High Water Levels:

When water levels rise above normal summer level masters should be aware of:

Navigation

Navigation marks will have reduced height above the water level or may disappear underwater altogether making the navigable channel difficult to discern.

In narrow sections of the navigations water levels will tend to rise more quickly than in main streams and air draft at bridges will likewise be reduced.

There will also be increased flow rates particularly in the vicinity of navigation infrastructure such as bridges, weirs, locks etc where extra care in manoeuvring vessels will be required.

Harbours and Jetties

Due care is required in harbours and at slipways when levels are at or near the same level as the harbour walkways' as the edge will be difficult to discern especially in reduced light conditions. It is advised that Personal Flotation Devices be worn if tending to craft in a harbour in these conditions.

Slipways

Slipways should only be used for the purpose of launching and recovering of water craft or other objects from the water. Before using a slipway it should be examined to ensure that the surface has sufficient traction/grip for the intended purpose such as launching a craft from a trailer using a vehicle, that there is sufficient depth of water on the slipway to float the craft off the trailer before the concrete apron ends and that the wheels of the trailer do not drop off the edge of the slipway. That life-saving appliances are available in the vicinity, that the vehicle is roadworthy and capable of coping with the weight of the trailer and boat on the incline. It is recommended that slipway operations are conducted by two persons.

Caution to be Used in Reliance upon Aids to Navigation

The aids to navigation depicted on the navigation guides comprise a system of fixed and floating aids to navigation. Prudent mariners will not rely solely on any single aid to navigation, particularly a floating aid to navigation. With respect to buoys, the buoy symbol is used to indicate the approximate position of the buoy body and the ground tackle which secures it to the lake or river bed. The approximate position is used because of the practical limitations in positioning and maintaining buoys in precise geographical locations. These limitations include, but are not limited to, prevailing atmospheric and lake/river conditions, the slope of and the material making up the lake/river bed, the fact that the buoys are moored to varying lengths of chain, and the fact that the buoy body and/or ground tackle positions are not under continuous surveillance. Due to the forces of nature, the position of the buoy body can be expected to shift inside and outside the charted symbol.

Buoys and perches are also moved out of position or pulled over by those mariners who use them to moor up to instead of anchoring. To this end, mariners should always monitor their passage by relating buoy/perch positions with the published navigation guide. Furthermore, a vessel attempting to pass close by always risks collision with a yawing buoy or with the obstruction that the buoy or beacon/perch marks.

Masters of Vessels are requested to use the most up to date Navigation guides when navigating on the Inland Waterways.

Information taken from Special Marine Notice No 1 of 2023