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Displaying items by tag: Ship Tunnel

Alex Blackwell of Clew Bay is always buzzing with ideas, and his latest notion is that the destination for a future Cruise-in-Company by some seagoing club or other (he's involved in several) should be the pioneering Ship Tunnel that the Norwegian Government is gong to build through the isthmus of the Stad Peninsula. This rugged headland of ill-repute is around 200 kilometres north of the ancient Hanseatic port of Bergen, and juts stubbornly out from the most westerly part of Norway's much-indented Atlantic coast. As it's on the same latitude as the Faroe Islands - where the sailing is plagued by the wayward winds and weather of the Arctic Convergence - the west point of the Stad reputedly has a hundred gale days every year, not to mention the added turmoil of opposing tides fighting to dominate each other.

Its foul reputation is such that in times past, frustrated Viking voyagers were reputed occasionally to haul their ships across a slight dip in the mile or so of the steep isthmus in order to make progress north or south. That is a very much more formidable challenge than the early mediaeval habit in Ireland – still part of folk memory in Baldoyle - of hauling Viking longships on tree-trunk rollers across the tombolo at Sutton in order to by-pass Howth from Dublin Bay without having to face the winter weather off The Baily.

The Stad Peninsula with the line of the Ship Tunnel. The island of Selje, directly linked to the 11th Century Irish missionary St Sunniva, is at the centre of map.   The Stad Peninsula with the line of the Ship Tunnel. The island of Selje, directly linked to the 11th Century Irish missionary St Sunniva, is at the centre of map.  

The Stad Ship Tunnel will be an engineering project of international interest. It is said that in prolonged periods of bad weather, the Vikings sometimes resorted to portaging their longships across the dip in the foreground on the isthmus ridgeThe Stad Ship Tunnel will be an engineering project of international interest. It is said that in prolonged periods of bad weather, the Vikings sometimes resorted to portaging their longships across the dip in the foreground on the isthmus ridge

Nowadays, even the able ships of the famous Norwegian Hurtigruten coast-hopping express can find the Stad means trouble, for the name simply means Stop, and it can do what it says on the
tin. Yet much of the pain could be taken out of it if only one could by-pass with a neat little slice through the peninsula's neck at its narrowest part, where the distance is just 1.7 kilometres, or near
enough a mile.

That location has been much debated, as a longer tunnel nearer the open sea would mean less diversion for vessels bound along the coast. But as a cruising destination, a tunnel further inland is all to the good, as it brings you well into the real Norway, and the fascinating neighbourhood of Stadlandet. It's not quite Norway's Dingle Peninsula, but as the local holy woman was St Sunniva, a Christian missionary from some royal family in Ireland, then it's only right and proper the Irish Cruising Club should someday head that way and make a ceremonial transit – under sail of course – through the new tunnel.

The remains of St Sunniva's Abbey on Selje is in the western approaches to the Ship Tunnel

To access the tunnel from the southwest, the final bit of local mini-fjord takes you past Selje Island and its 11th Century abbey, which was Sunniva's centre of operations, and is her burial place. There's many a cruise from Ireland which has had Santiago de Compostela in Galicia as one of its objectives, and in cruising the coasts of Cornwall and Brittany, you find yourself off harbourside villages which were name to venerate Irish missionaries. But in heading for Norway, you might expect to find yourself at Kirkwall in Orkney and its cathedral of St Magnus the Martyr.

He was the first and last Viking saint. He persuaded his comrades to give up their more anti-social habits, thereby contributing significantly to the ending of Vikingism, but he had his head cut off for his troubles. Be that as it may, the dominance of Magnus-veneration in the Orkneys might lead to the assumption that Norwegian Christian missionaries were making all the running. But by sailing a few hundred miles further northeast to Selje, you'll find confirmation that it was an Irish persuader who started it all.

And now, with preparations well advanced such that work on the tunnel is on target to start in 2022 with a completion in 2025, the focus is once again on the waters in and around Selje. The tunnel idea is not at all new – it must have occurred to the Viking boat-haulers as they cursed their longships across the dip in the ridge – but since 1874, the proposals have become increasingly realistic as tunnelling technology has advanced, and since 2011 it has been steadily moving up the agenda of the Norwegian National Transport Development Plan, until now it is just a matter of time.

The relatively little-known area inland of Stad will offer fresh yet convenient cruising possibilities once the Tunnel is openedThe relatively little-known area inland of Stad will offer fresh yet convenient cruising possibilities once the Tunnel is opened

It is also increasingly a matter of international interest to the point of fascination, for this is a major public expenditure flagship project. Thus everyone is intrigued to see how well the notoriously serious but also extremely resource-rich Norwegians manage to stay within budget, when other schemes like the "new" airport at Berlin, the high-speed railway in England, and the National Children's Hospital in Ireland appear to have gone out of and well beyond any controlled financial orbit.

Admittedly an every-which-way-technologically-complex project like an airport or a hospital is in a different category from the basically straightforward concept of a tunnel. But nevertheless, the removal of billions of tons of best Norwegian rock puts the Stad tunnel in a league of its own, for even the steep-sided Corinth Canal inside the Peloponnese in Greece maybe all of four miles long, yet it is but an open-topped ditch by comparison.

The Stad Tunnel will be a showpiece project, and wherein times past civil engineers seemed to prefer to be left in peace to get on with their more challenging projects, the construction of the Tunnel will be a must-see on the tourist circuit, as too in the future will be the sight of ships suddenly popping out of a hole in the Norwegian coast.

Built to accommodate ships up to the Hurtigruten Coastal Express size, it should be possible to sail through the Stad Ship Tunnel with a fair wind. Whether it will be permissible is another matter……Built to accommodate ships up to the Hurtigruten Coastal Express size, it should be possible to sail through the Stad Ship Tunnel with a fair wind. Whether it will be permissible is another matter……

Whether or not in 2027 or thereabouts the Irish Cruising Club will be allowed to have a fleet sail-through of the Tunnel as the culmination of their St Sunniva Cruise-in-Company is something else altogether, but there is a precedent of sorts.

Way back in September 1968, the ICC had one of their few truly all-Ireland Rallies, staged in Newry at the head of the Newry Ship Canal, and boats came from every coastline. One was Stan Roche's hefty big ketch Nancy Bet from Crosshaven, and once they'd passed through the sea lock from Carlingford Lough, Stan and his merry men realised the brisk and freshening southeaster was a direct fair wind along the canal to the Albert Basin. So they sent up the spinnaker, and other boats set some sail as well.

There were only two cars moving along the little canal-side road, but in observing this rather amazing spectacle, they managed to crash into each other. Yet - miraculously - the sail-setting boats avoided doing something similar as they arrived with a mighty flourish in Newry.

Can something similar be arranged for the Stad Tunnel, with its air draft of 161ft and width of 118ft? Unlike Newry, if you can just make it through with spinnaker set, there'll be oodles of room to take it in as you ping out into open water at the far end………

After you….CGI of ships taking it in turn to enter the Stad Ship TunnelAfter you….CGI of ships taking it in turn to enter the Stad Ship Tunnel

It can be a difficult coastline, and the Stad (at top) is the most difficult bit of all for smaller craftIt can be a difficult coastline, and the Stad (at top) is the most difficult bit of all for smaller craft

Published in Ports & Shipping
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Ireland's Offshore Renewable Energy

Because of Ireland's location at the Atlantic edge of the EU, it has more offshore energy potential than most other countries in Europe. The conditions are suitable for the development of the full range of current offshore renewable energy technologies.

Offshore Renewable Energy FAQs

Offshore renewable energy draws on the natural energy provided by wind, wave and tide to convert it into electricity for industry and domestic consumption.

Offshore wind is the most advanced technology, using fixed wind turbines in coastal areas, while floating wind is a developing technology more suited to deeper water. In 2018, offshore wind provided a tiny fraction of global electricity supply, but it is set to expand strongly in the coming decades into a USD 1 trillion business, according to the International Energy Agency (IEA). It says that turbines are growing in size and in power capacity, which in turn is "delivering major performance and cost improvements for offshore wind farms".

The global offshore wind market grew nearly 30% per year between 2010 and 2018, according to the IEA, due to rapid technology improvements, It calculated that about 150 new offshore wind projects are in active development around the world. Europe in particular has fostered the technology's development, led by Britain, Germany and Denmark, but China added more capacity than any other country in 2018.

A report for the Irish Wind Energy Assocation (IWEA) by the Carbon Trust – a British government-backed limited company established to accelerate Britain's move to a low carbon economy - says there are currently 14 fixed-bottom wind energy projects, four floating wind projects and one project that has yet to choose a technology at some stage of development in Irish waters. Some of these projects are aiming to build before 2030 to contribute to the 5GW target set by the Irish government, and others are expected to build after 2030. These projects have to secure planning permission, obtain a grid connection and also be successful in a competitive auction in the Renewable Electricity Support Scheme (RESS).

The electricity generated by each turbine is collected by an offshore electricity substation located within the wind farm. Seabed cables connect the offshore substation to an onshore substation on the coast. These cables transport the electricity to land from where it will be used to power homes, farms and businesses around Ireland. The offshore developer works with EirGrid, which operates the national grid, to identify how best to do this and where exactly on the grid the project should connect.

The new Marine Planning and Development Management Bill will create a new streamlined system for planning permission for activity or infrastructure in Irish waters or on the seabed, including offshore wind farms. It is due to be published before the end of 2020 and enacted in 2021.

There are a number of companies aiming to develop offshore wind energy off the Irish coast and some of the larger ones would be ESB, SSE Renewables, Energia, Statkraft and RWE.

There are a number of companies aiming to develop offshore wind energy off the Irish coast and some of the larger ones would be ESB, SSE Renewables, Energia, Statkraft and RWE. Is there scope for community involvement in offshore wind? The IWEA says that from the early stages of a project, the wind farm developer "should be engaging with the local community to inform them about the project, answer their questions and listen to their concerns". It says this provides the community with "the opportunity to work with the developer to help shape the final layout and design of the project". Listening to fishing industry concerns, and how fishermen may be affected by survey works, construction and eventual operation of a project is "of particular concern to developers", the IWEA says. It says there will also be a community benefit fund put in place for each project. It says the final details of this will be addressed in the design of the RESS (see below) for offshore wind but it has the potential to be "tens of millions of euro over the 15 years of the RESS contract". The Government is also considering the possibility that communities will be enabled to invest in offshore wind farms though there is "no clarity yet on how this would work", the IWEA says.

Based on current plans, it would amount to around 12 GW of offshore wind energy. However, the IWEA points out that is unlikely that all of the projects planned will be completed. The industry says there is even more significant potential for floating offshore wind off Ireland's west coast and the Programme for Government contains a commitment to develop a long-term plan for at least 30 GW of floating offshore wind in our deeper waters.

There are many different models of turbines. The larger a turbine, the more efficient it is in producing electricity at a good price. In choosing a turbine model the developer will be conscious of this ,but also has to be aware the impact of the turbine on the environment, marine life, biodiversity and visual impact. As a broad rule an offshore wind turbine will have a tip-height of between 165m and 215m tall. However, turbine technology is evolving at a rapid rate with larger more efficient turbines anticipated on the market in the coming years.

 

The Renewable Electricity Support Scheme is designed to support the development of renewable energy projects in Ireland. Under the scheme wind farms and solar farms compete against each other in an auction with the projects which offer power at the lowest price awarded contracts. These contracts provide them with a guaranteed price for their power for 15 years. If they obtain a better price for their electricity on the wholesale market they must return the difference to the consumer.

Yes. The first auction for offshore renewable energy projects is expected to take place in late 2021.

Cost is one difference, and technology is another. Floating wind farm technology is relatively new, but allows use of deeper water. Ireland's 50-metre contour line is the limit for traditional bottom-fixed wind farms, and it is also very close to population centres, which makes visibility of large turbines an issue - hence the attraction of floating structures Do offshore wind farms pose a navigational hazard to shipping? Inshore fishermen do have valid concerns. One of the first steps in identifying a site as a potential location for an offshore wind farm is to identify and assess the level of existing marine activity in the area and this particularly includes shipping. The National Marine Planning Framework aims to create, for the first time, a plan to balance the various kinds of offshore activity with the protection of the Irish marine environment. This is expected to be published before the end of 2020, and will set out clearly where is suitable for offshore renewable energy development and where it is not - due, for example, to shipping movements and safe navigation.

YEnvironmental organisations are concerned about the impact of turbines on bird populations, particularly migrating birds. A Danish scientific study published in 2019 found evidence that larger birds were tending to avoid turbine blades, but said it didn't have sufficient evidence for smaller birds – and cautioned that the cumulative effect of farms could still have an impact on bird movements. A full environmental impact assessment has to be carried out before a developer can apply for planning permission to develop an offshore wind farm. This would include desk-based studies as well as extensive surveys of the population and movements of birds and marine mammals, as well as fish and seabed habitats. If a potential environmental impact is identified the developer must, as part of the planning application, show how the project will be designed in such a way as to avoid the impact or to mitigate against it.

A typical 500 MW offshore wind farm would require an operations and maintenance base which would be on the nearby coast. Such a project would generally create between 80-100 fulltime jobs, according to the IWEA. There would also be a substantial increase to in-direct employment and associated socio-economic benefit to the surrounding area where the operation and maintenance hub is located.

The recent Carbon Trust report for the IWEA, entitled Harnessing our potential, identified significant skills shortages for offshore wind in Ireland across the areas of engineering financial services and logistics. The IWEA says that as Ireland is a relatively new entrant to the offshore wind market, there are "opportunities to develop and implement strategies to address the skills shortages for delivering offshore wind and for Ireland to be a net exporter of human capital and skills to the highly competitive global offshore wind supply chain". Offshore wind requires a diverse workforce with jobs in both transferable (for example from the oil and gas sector) and specialist disciplines across apprenticeships and higher education. IWEA have a training network called the Green Tech Skillnet that facilitates training and networking opportunities in the renewable energy sector.

It is expected that developing the 3.5 GW of offshore wind energy identified in the Government's Climate Action Plan would create around 2,500 jobs in construction and development and around 700 permanent operations and maintenance jobs. The Programme for Government published in 2020 has an enhanced target of 5 GW of offshore wind which would create even more employment. The industry says that in the initial stages, the development of offshore wind energy would create employment in conducting environmental surveys, community engagement and development applications for planning. As a site moves to construction, people with backgrounds in various types of engineering, marine construction and marine transport would be recruited. Once the site is up and running , a project requires a team of turbine technicians, engineers and administrators to ensure the wind farm is fully and properly maintained, as well as crew for the crew transfer vessels transporting workers from shore to the turbines.

The IEA says that today's offshore wind market "doesn't even come close to tapping the full potential – with high-quality resources available in most major markets". It estimates that offshore wind has the potential to generate more than 420 000 Terawatt hours per year (TWh/yr) worldwide – as in more than 18 times the current global electricity demand. One Terawatt is 114 megawatts, and to put it in context, Scotland it has a population a little over 5 million and requires 25 TWh/yr of electrical energy.

Not as advanced as wind, with anchoring a big challenge – given that the most effective wave energy has to be in the most energetic locations, such as the Irish west coast. Britain, Ireland and Portugal are regarded as most advanced in developing wave energy technology. The prize is significant, the industry says, as there are forecasts that varying between 4000TWh/yr to 29500TWh/yr. Europe consumes around 3000TWh/year.

The industry has two main umbrella organisations – the Irish Wind Energy Association, which represents both onshore and offshore wind, and the Marine Renewables Industry Association, which focuses on all types of renewable in the marine environment.

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