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Displaying items by tag: Submarine cable

ESB Networks has appealed for vigilance at sea in relation to submarine cables after a fishing vessel cut power to West Cork’s Bere Island last week.

ESB Networks restored power to some 280 affected islanders at 11 pm on Friday last, January 5th, some 31 hours after supplies were cut suddenly on January 4th.

The operator confirmed that the outage occurred “ as a result of a fishing vessel accidentally coming into contact with a cable running from Castletownbere to Bere island”.

It said that “repair efforts started immediately, which included a diver safely locating the damaged cable so ESB Networks crews could carry out the required restoration work”.

Power was restored to all impacted customers by 11pm on Friday night,it said, and it apologised to all those affected by the disruption.

There was considerable upset at the incident at a particularly difficult time of year and with islanders dependent on freezers to store food supplies.

An ESB Networks spokesman declined to confirm the cost of the repairs, or whether the fishing vessel had offered to contribute.

The non-governmental organisation Coastwtch said the incident illustrated the “damage large powerful fishing vessels can have on the fragile nature” of the seafloor.

It called on the State to recover costs from “those who caused the damage”, and said that “our heart goes out to families left without power in winter cold”.

Coastwatch co-ordinator Karin Dubsky questioned why the island was dependent on one power cable and said a Heritage Council study 20 years ago had flagged concerns about this.

Given that submarine cables are set to increase during offshore wind development, she said it was essential that the cable “isn’t just fixed but that the cause is determined and published with planned action” to avoid a recurrence.

The ESB said that “damage to our network by third parties can occur from time to time – generally on overhead and underground cables on land - and we run extensive public campaigns on staying safe and staying clear of our network”.

“This incident serves as a timely reminder that similar vigilance should be applied by those at sea to submarine cables”,it said.

More information on its public campaigns is here.

Published in Marine Warning

Marine Institute Research Vessel Tom Crean

Ireland’s new marine research vessel will be named the RV Tom Crean after the renowned County Kerry seaman and explorer who undertook three major groundbreaking expeditions to the Antarctic in the early years of the 20th Century which sought to increase scientific knowledge and to explore unreached areas of the world, at that time.

Ireland's new multi-purpose marine research vessel RV Tom Crean, was delivered in July 2022 and will be used by the Marine Institute and other State agencies and universities to undertake fisheries research, oceanographic and environmental research, seabed mapping surveys; as well as maintaining and deploying weather buoys, observational infrastructure and Remotely Operated Vehicles.

The RV Tom Crean will also enable the Marine Institute to continue to lead and support high-quality scientific surveys that contribute to Ireland's position as a leader in marine science. The research vessel is a modern, multipurpose, silent vessel (designed to meet the stringent criteria of the ICES 209 noise standard for fisheries research), capable of operating in the Irish Exclusive Economic Zone (EEZ). The Tom Crean is able to go to sea for at least 21 days at a time and is designed to operate in harsh sea conditions.

RV Tom Crean Specification Overview

  • Length Overall: 52.8 m
  • Beam 14m
  • Draft 5.2M 

Power

  • Main Propulsion Motor 2000 kw
  • Bow Thruster 780 kw
  • Tunnel thruster 400 kw

Other

  • Endurance  21 Days
  • Range of 8,000 nautical miles
  • DP1 Dynamic Positioning
  • Capacity for 3 x 20ft Containers

Irish Marine Research activities

The new state-of-the-art multi-purpose marine research vessel will carry out a wide range of marine research activities, including vital fisheries, climate change-related research, seabed mapping and oceanography.

The new 52.8-metre modern research vessel, which will replace the 31-metre RV Celtic Voyager, has been commissioned with funding provided by the Department of Agriculture, Food and the Marine approved by the Government of Ireland.

According to Aodhán FitzGerald, Research Vessel Manager of the MI, the RV Tom Crean will feature an articulated boom crane aft (6t@ 10m, 3T@ 15m), located on the aft-gantry. This will be largely used for loading science equipment and net and equipment handling offshore.

Mounted at the stern is a 10T A-frame aft which can articulate through 170 degrees which are for deploying and recovering large science equipment such as a remotely operated vehicle (ROV’s), towed sleds and for fishing operations.

In addition the fitting of an 8 Ton starboard side T Frame for deploying grabs and corers to 4000m which is the same depth applicable to when the vessel is heaving but is compensated by a CTD system consisting of a winch and frame during such operations.

The vessel will have the regulation MOB boat on a dedicated davit and the facility to carry a 6.5m Rigid Inflatable tender on the port side.

Also at the aft deck is where the 'Holland 1' Work class ROV and the University of Limericks 'Etain' sub-Atlantic ROV will be positioned. In addition up to 3 x 20’ (TEU) containers can be carried.

The newbuild has been engineered to endure increasing harsher conditions and the punishing weather systems encountered in the North-East Atlantic where deployments of RV Tom Crean on surveys spent up to 21 days duration.

In addition, RV Tom Crean will be able to operate in an ultra silent-mode, which is crucial to meet the stringent criteria of the ICES 209 noise standard for fisheries research purposes.

The classification of the newbuild as been appointed to Lloyds and below is a list of the main capabilities and duties to be tasked by RV Tom Crean:

  • Oceanographic surveys, incl. CTD water sampling
  • Fishery research operations
  • Acoustic research operations
  • Environmental research and sampling operation incl. coring
  • ROV and AUV/ASV Surveys
  • Buoy/Mooring operations