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Displaying items by tag: Waterways Ireland

Waterways Ireland advises masters of all craft on the Grand Canal that the lifting bridge at Monasterevin on the Barrow Line will be closed for canal traffic on Thursday 24 August only to facilitate emergency road repairs. The bridge will return to normal operations on Friday 25 August.

Published in Inland Waterways

Waterways Ireland advises masters of vessels and waterway users on the Shannon Navigation that the Rooskey Dry Dock facility is closed for use by the public from Monday 21 August until 1 August 2024 to facilitate upgrade works.

Published in Inland Waterways

Waterways Ireland advises all masters of vessels and waterways users that the Grand Canal’s Circular Line in Dublin (Lock C1 through to Lock C7) is currently closed to navigation due to fallen trees across the canal in the aftermath of Storm Betty at the weekend.

The cross-border body for Ireland’s inland waterways did not provide a timeframe for the line’s reopening but said it “apologies for any inconvenience caused”.

Published in Inland Waterways

Waterways Ireland advises masters of vessels and waterways users on the Shannon Navigation that there will be diving activities taking place in the river around Tarmonbarry Bridge, lock and quay on Thursday 17 August.

The bridge and lock will remain open but delays may be expected. Masters of vessels can divert via the Camlin River if desired.

The cross-border body for Ireland’s inland waterways also advises that two additional temporary green markers have been placed on the east side of Long Island, south of Athlone, to prevent boating traffic veering off the main navigation channel.

Masters of vessels are requested to proceed with additional caution in the area as high-water levels and fast flows continue to exist.

Published in Inland Waterways

Waterways Ireland advises all recreational users of the Erne System and Lower Bann Navigation that blue-green algae is present in a number of locations on these inland waterways.

Blue-green algae blooms can be toxic to humans and potentially lethal to animals under certain conditions. A number of serious incidents involving blue-green algae have been reported in Northern Ireland in recent week.

Waterways Ireland calls on all users of these waterways whether on or adjacent the water — and especially pet owners — to comply with any notices placed by their local authority and avoid contact or immersive activities in areas where blue-green algae is present.

Waterways Ireland’s jetties and slipways remain open, but the public is advised to refrain from immersive activities including swimming and not to allow pets to drink from or swim in affected areas.

The surface of slipways can become slippery due to algae build up, and Waterways Ireland advises additional caution when using slipway facilities in affected areas.

In addition, the public is encouraged to report encounters with blue-green algae blooms on the inland waterways via any of the following means:

Published in Inland Waterways

Waterways Ireland advises masters of vessels on and users of the Shannon Navigation that Uisce Éireann will be installing an outfall downstream of Killaloe and Ballina from next Monday 21 August to the end of September.

A work barge will be launched from the carpark adjacent to the Waterways Ireland building in Killaloe and will operate south of the bridge adjacent to the Ballina wastewater treatment plant for the duration of the works.

The outfall will extend from the Ballina plant into the river for a distance of 90 metres.

Two temporary special markers will be installed to mark the limits of the in-river works area downstream of Killaloe and Ballina. A permanent navigation marker will be installed when the works are completed.

Masters of vessels should proceed with additional caution in the vicinity of the works, adds the cross-border body for Ireland’s inland waterways.

Published in Inland Waterways

Waterways Ireland advises all masters of vessels on and other users of the Shannon-Erne Waterway that Inland Fisheries Ireland will be conducting a fish stock survey on Lough Scur between Monday 14 and Thursday 17 August.

All nets will be clearly marked by orange buoys marked ‘IFI Survey’, adds the cross-border body for Ireland’s inland waterways.

Masters of vessels and all water users should proceed with additional caution when operating on Lough Scur during this period.

Published in Inland Waterways

Waterways Ireland advises all masters of vessels on the Shannon Navigation that Dromod Harbour in Co Leitrim will be without power supply on Wednesday 9 August due to a notified ESB power supply interruption from 9.30am to 4pm.

This planned power outage will affect the service block and pump-out facilities during this time, the cross-border body for Ireland’s inland waterways adds.

Published in Inland Waterways

Waterways Ireland advises masters and owners of vessels on the Shannon Navigation that Connaught Harbour in Portumna will be closed from this Thursday 10 August for a period of one month to facilitate works in the area.

The area of closure will be from the inner wall of the slipway towards Connaught Harbour, the cross-border body for Ireland’s inland waterways adds.

Masters of vessels currently moored in Connaught Harbour are requested to remove their vessels from the harbour before Thursday 10 August. Vessels remaining in the harbour after this date will be removed by Waterways Ireland.

Published in Inland Waterways

Waterways Ireland wishes advises masters and owners of vessels on the Shannon Navigation of high water levels and fast flows throughout the inland waterway.

Masters of vessels and other water users should proceed with additional caution and bear the following in mind when on the water during high-water conditions:

  • Air draft is reduced under all bridges and power lines.
  • Water velocity is significantly increased.
  • Access to jetties can be difficult as gangways and pontoons are elevated.
  • Navigation markers, pontoons and jetties may be submerged.
  • Mooring lines should be checked regularly if it safe to do so.
Published in Inland Waterways
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Sharks in Irish waters

Irish waters are home to 71 species of shark, skates and rays, 58 of which have been studied in detail and listed on the Ireland Red List of Cartilaginous fish. Irish sharks range from small Sleeper sharks, Dogfish and Catsharks, to larger species like Frilled, Mackerel and Cow sharks, all the way to the second largest shark in the world, the Basking shark. 

Irish waters provide a refuge for an array of shark species. Tralee Bay, Co. Kerry provides a habitat for several rare and endangered sharks and their relatives, including the migratory tope shark, angel shark and undulate ray. This area is also the last European refuge for the extremely rare white skate. Through a European Maritime and Fisheries Fund (EMFF) project, Marine Institute scientists have been working with fishermen to assess the distribution, diversity, and monthly relative abundance of skates and rays in Tralee, Brandon and Dingle Bays.

“These areas off the southwest coast of Ireland are important internationally as they hold some of the last remaining refuges for angel shark and white skate,” said Dr Maurice Clarke of the Marine Institute. “This EMFF project has provided data confirming the critically endangered status of some species and provides up-to-date information for the development of fishery measures to eliminate by-catch.” 

Irish waters are also home to the Black Mouthed Catshark, Galeus melastomus, one of Ireland’s smallest shark species which can be found in the deep sea along the continental shelf. In 2018, Irish scientists discovered a very rare shark-nursery 200 nautical miles off the west coast by the Marine Institute’s ROV Holland 1 on a shelf sloping to 750 metres deep. 

There are two ways that sharks are born, either as live young or from egg casings. In the ‘case’ of Black Mouthed Catsharks, the nursery discovered in 2018, was notable by the abundance of egg casings or ‘mermaid’s purses’. Many sharks, rays and skate lay eggs, the cases of which often wash ashore. If you find an egg casing along the seashore, take a photo for Purse Search Ireland, a citizen science project focusing on monitoring the shark, ray and skate species around Ireland.

Another species also found by Irish scientists using the ROV Holland 1 in 2018 was a very rare type of dogfish, the Sail Fin Rough Shark, Oxynotus paradoxus. These sharks are named after their long fins which resemble the trailing sails of a boat, and live in the deep sea in waters up to 750m deep. Like all sharks, skates and rays, they have no bones. Their skeleton is composed of cartilage, much like what our noses and ears are made from! This material is much more flexible and lighter than bone which is perfect for these animals living without the weight of gravity.

Throughout history sharks have been portrayed as the monsters of the sea, a concept that science is continuously debunking. Basking sharks were named in 1765 as Cetorhinus maximus, roughly translated to the ‘big-nosed sea monster’. Basking sharks are filter feeders, often swimming with their mouths agape, they filter plankton from the water.

They are very slow moving and like to bask in the sun in shallow water and are often seen in Irish waters around Spring and early Summer. To help understand the migration of these animals to be better able to understand and conserve these species, the Irish Basking Shark Group have tagged and mapped their travels.

Remarkably, many sharks like the Angel Shark, Squatina squatina have the ability to sense electricity. They do this via small pores in their skin called the ‘Ampullae of Lorenzini’ which are able to detect the tiny electrical impulses of a fish breathing, moving or even its heartbeat from distances of over a kilometre! Angel sharks, often referred to as Monkfish have a distinctively angelic shape, with flattened, large fins appearing like the wings of an angel. They live on the seafloor in the coastal waters of Ireland and much like a cat are nocturnal, primarily active at night.

The intricate complexity of shark adaptations is particularly noticeable in the texture of their skin. Composed of miniscule, perfectly shaped overlapping scales, the skin of shark provides them with protection. Often shark scales have been compared to teeth due to their hard enamel structure. They are strong, but also due to their intricate shape, these scales reduce drag and allow water to glide past them so that the shark can swim more effortlessly and silently. This natural flawless design has been used as inspiration for new neoprene fabric designs to help swimmers glide through the water. Although all sharks have this feature, the Leafscale Gulper Shark, Centrophorus squamosus, found in Ireland are specifically named due to the ornate leaf-shape of their scales.