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Experts have been puzzled by reports of strange tidal activity on the South Coast at the weekend, as TheJournal.ie reports.

On Saturday afternoon (18 June), Union Hall in West Cork saw levels in its harbours drop by as much as 70cm in a mere five minutes, before the waters flooded back — and similar incidents were reported in Wexford and across the Irish Sea in Pembrokeshire.

The bizarre situation has baffled experts, with some suggesting it could be linked to earthquakes off the Azores.

But one oceanographer believes it could be the result of an extremely rare conflation of separate atmospheric events.

Gerard McCarthy told CorkBeo that the surprise tidal moves may be the effect of a meteotsunami — a large wave caused by stormy conditions at sea — combined with the natural sloshing action, or seiching, of the waters at Union Hall.

CorkBeo has more on the story HERE.

Published in Weather
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Cork County Council has engaged a contractor for the removal of the wreck of the fishing trawler, MV Sceptre, at Union Hall, West Cork and work has commenced.

The wreck will be removed by barge for transport to an overseas licensed facility to be disposed of environmentally Council says.

Published in West Cork
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The volunteer crew at Union Hall RNLI were requested to launch their inshore Atlantic 85 inshore lifeboat Christine and Raymond Fielding at 12.15pm on Monday (13 June) to a 10m fishing vessel with two people onboard that had got propped off The Stags.

The lifeboat, under helm Michael Limrick with crew Paddy Moloney and Darren Collins, launched eight minutes later from the West Cork fishing village in a westerly breeze with moderate sea conditions.

Once on scene, the lifeboat crew carried out an assessment and it was determined, due to the casualty vessel being propped, that a tow should be established. The vessel was towed to the nearest safe port of Union Hall arriving at 2.35pm.

Following the callout, Jim Moloney, Union Hall RNLI deputy launching authority said: “It is always advisable to call the coastguard on 112/999 if you see someone in trouble on or near the water — wear a lifejacket, carry a means of communication, wear suitable clothing for the trip at sea and enjoy your time on the coast over the coming months.”

Published in RNLI Lifeboats
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The volunteer Union Hall RNLI crew in West Cork were requested to launch their inshore Atlantic 85 lifeboat Christine and Raymond Fielding, by the Irish Coast Guard at 7.56 pm on Sunday 24th April to a 33-foot vessel with two persons on board with engine difficulty.

The lifeboat under helm Chris Collins with crew Paddy Moloney, Sean Walsh and Riona Casey, launched at 8.04 pm, in South East force 4/5 moderate to rough sea conditions at the time, Once on scene, an assessment was carried out by our crew and due to the engine difficulties, a tow was established and the vessel was escorted to the nearest safe port of Union Hall, where the lifeboat was recovered at 11.00 pm.

Following the call out, Peter Deasy, Union Hall RNLI Deputy Launch Authority said: ‘It is always advisable to call the Coast Guard on 112/999 if you see someone in trouble on or near the water, wear a life jacket, carry a means of communication, wear suitable clothing for the trip at sea, and enjoy your time on the coast over the coming months.’ Also we would like to congratulate Riona on her first call-out as a volunteer crew member here in Union Hall.

Published in RNLI Lifeboats
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Following recommendations from an independent inspection of the Old Pier at Keelbeg in Union Hall, Cork County Council says that “in order to improve safety” it is obliged to close the pier to public access.

The move has been met with dismay from the local community, with Myross Rowing Club among those calling for the pier to be upgraded rather than closed entirely.

It its reasoning, the club lists the pier’s long history and role in Union Hall’s heritage along with its use for recreational purposes and as a shelter for vessel in southeasterly winds, as well as providing access for fishing boats and leisure craft spilling over from “an already overcrowded new pier”.

It also highlights that funding has been secured for upgrades on other small piers along the West Cork coast and asks: “Why not Union Hall?”

Written comments, remarks and suggestions on the council’s plans can be submitted to the Harbour Master, Harbour Master’s Office, Skibbereen, P81 RC 21 or by email to [email protected] by close of business this Wednesday 13 April.

Published in Coastal Notes
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Union Hall RNLI in West Cork launched to a speedboat in difficulty in Glandore Harbour on Saturday, March 2th.

The 16-foot speedboat with three persons on board had lost power between Adam and Eve at the entrance to Glandore harbour.

The Atlantic 85 Christine and Raymond Fielding under helm Michael Limrick with crew Darren Collins, Liam Limrick and Sean Walsh launched in South East force 5 moderate to rough sea conditions,

Within a few minutes of the pagers being activated, and were on scene where the vessel was drifting ashore. A tow was established and the vessel was escorted to the safety of the pier in Union Hall.

Following the call out, John Kelleher, Union Hall RNLI Lifeboat Operations Manager said: ‘With the unprecedented fine weather we are experiencing currently, remember the following; wear a life jacket and carry a means of communication.

Union Hall RNLI also welcomed new volunteer Niamh Collins on her first call out as shore crew.

Published in RNLI Lifeboats
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A new inshore Atlantic 85 class lifeboat has officially gone on service at Union Hall RNLI in in West Cork.

The lifeboat, which arrived at the lifeboat station last week, replaces the last Atlantic 75 in Ireland, Margaret Bench of Solihull, which has been used to save lives at sea in West Cork since 2017. Previous to this, Maritime Nation was in service from 2014. Both of these lifeboats came from the RNLI’s relief fleet.

The volunteer lifeboat crew began familiarisation training on the new lifeboat this past Monday and it was officially declared a search and rescue asset by the Irish Coast Guard last night, Thursday 24 June.

It has been funded through a legacy from the late Raymond Fielding. Raymond and his wife Christine were keen sailors and sailed into Glandore Harbour many times over the years.

Due to his many fond memories of West Cork, Raymond wanted his legacy to fund an Atlantic 85 class lifeboat and he requested that it came to Union Hall.

The Christine and Raymond Fielding will be officially named at a special ceremony and service of dedication at Union Hall lifeboat station at a later date.

The new lifeboat has been funded through a legacy from the late Raymond Fielding | Credit: RNLI/Union HallThe new lifeboat has been funded through a legacy from the late Raymond Fielding | Credit: RNLI/Union Hall

Union Hall’s new lifeboat has some advancements on its predecessor. The Atlantic 85 design allows room for four crew members and more kit than the Atlantic 75, which only had room for three people.

The lifeboat is powered by two 115HP engines and has a stronger hull and greater top speed of 35 knots. The added radar allows the crew to operate more effectively in poor visibility and there is also VHF direction-finding equipment.

Another feature is the manually operated self-righting mechanism which, combined with inversion-proofed engines, keeps the lifeboat operational even after capsize. The lifeboat can also be beached in an emergency without causing damage to its engines or steering gear.

The Atlantic 85, which was introduced to the RNLI fleet in 2005, also carries a full suite of communication and electronic navigation aids, as well as a searchlight, night-vision equipment and flares for night-time operations.

Speaking following the lifeboat officially going on service, Union Hall RNLI lifeboat operations manager John Kelleher said: “We are extremely grateful to Raymond Fielding for his generous legacy donation which has funded our permanent lifeboat here at Union Hall.

“As we welcome a new lifeboat, there is also a sense of nostalgia as we are the last lifeboat station in Ireland to use an Atlantic 75 lifeboat.

“We are looking forward to being the custodians of this new lifeboat which will allow our volunteers to go on to rescue and save many more lives in the years to come.”

Published in RNLI Lifeboats
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Union Hall RNLI’s latest volunteer got more than he expected last night (Tuesday 22 June) after the lifeboat crew were called to assist two people on a yacht with mechanical difficulties off Toe Head in West Cork.

The lifeboat, helmed by Michael Limrick with Liam Limrick and new recruit Craig Jennings onboard, were on a training exercise at the time and launched back out to sea at 9pm.

One at Toe Head the crew observed that the 34ft yacht was making progress but was slow due to mechanical issues. Sea conditions were good at the time with a moderate northerly breeze, so the volunteer crew stayed alongside the yacht and escorted it back to the pier at Union Hall.

Speaking following the callout, Peter Deasy, Union Hall RNLI’s deputy launching authority, said: “Our volunteer crew were just returning from an exercise and a busy day of training so I asked the crew if they would like an alternative crew but they were very willing to interrupt their training and proceed to assist the casualties.

“We congratulate Craig Jennings on what started as a three-hour training exercise for him but turned into nearly five hours at sea and included his first callout with Union Hall RNLI.

“We would remind everyone for the season ahead to always carry a means of communication and wear a lifejacket.”

Published in RNLI Lifeboats
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Union Hall RNLI launched this afternoon (Friday 14 May) to assist an angling vessel with seven people on board that was experiencing mechanical difficulty.

The volunteer lifeboat crew were requested to launch their inshore lifeboat Margaret Bench of Solihull at 3.40pm to the chartered angling vessel one mile south of Adam Island, just outside Glandore Harbour in West Cork.

With Tim Forde at the helm accompanied by crew Paddy Moloney and Cathal Deasy, the lifeboat launched at 3.51pm and made its way to the reported location.

Once on scene, a lifeboat crew member established a towline and the lifeboat towed the stricken angling vessel back to the pier at Union Hall.

Speaking following the callout, Union Hall RNLI deputy launching authority Jim Moloney said: “This was the second lifeboat launch request for Union Hall within 24 hours, and with a busy season ahead we would remind everyone going to sea to always carry a means of communication, wear a lifejacket and respect the water.”

Published in RNLI Lifeboats
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Union Hall RNLI volunteer Brian Crowley has received an Excellence in Volunteering Award from the RNLI for his hard work, dedication to and promotion of the charity that saves lives at sea.

Unfortunately due to pandemic restrictions, the lifeboat station could not present him with his award in person but hopes to mark this achievement next year.

“This is such an achievement as Brian is volunteering with the RNLI for ‘only’ 66 years so far,” said Pamela Deasey, Union Hall RNLI’s press officer.

“He was asked then to join by Mrs Bridges in Glandore, and he said ‘Yes’ straight away. As a young man growing up in Union Hall, he was aware of the dangers of the sea, and he wanted to raise awareness and help raise vital funds for the service.”

Brian was well-known throughout West Cork at the time as he used to co-own the ever popular Crowley’s Hall in Union Hall, where many a West Cork couple met — his first undertaking as fundraiser was a dance which was a tremendous success.

He became secretary of Leap, Glandore and Union Hall branch in 1976 as well as filling in a lot of other roles, until the current branch set up in 1997.

“Words like dependable, trustworthy, selfless and courageous are the ethos of the RNLI and Brian has proved to be a great ambassador having these qualities in abundance,” Pamela added.

“This is not Brian’s first award, as he also received his silver badge for fundraising in 1985 and a gold badge in 2003. He has many a story to tell about all his years service and all the tremendous characters he has met along his way.”

Speaking following news of the award, Mick McKenna, chair of fundraising at Union Hall RNLI, said: “Everyone at Union Hall RNLI would like to firstly congratulate Brian for this much deserved award, and secondly thank him for all his time, efforts and dedication throughout all these years, in helping to raise vital funds for the RNLI. We are all extremely proud of his achievements.”

Published in RNLI Lifeboats
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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