11th April 2025 in Construction, Press releases, Project news, Supply Chain
Dogger Bank Wind Farm has signed a contract with Seaway7, part of the Subsea7 Group, to charter a second turbine installation vessel to support the ongoing delivery of the offshore wind farm off the coast of England.
This contract signing follows on from the earlier reservation agreement between Dogger Bank Wind Farm and Seaway7, announced in December 2024.
Under the contract, the Seaway Ventus jack-up installation vessel will commence turbine transport and installation work of GE Vernova Haliade-X offshore wind turbines at the Dogger Bank site in mid-2026.
This contract represents additional work for Seaway7 at the Dogger Bank development where the company already has the contracts for transport and installation of the monopile foundations and transition pieces on all three phases of the project, with the works on Dogger Bank A complete and the works on Dogger Bank B substantially complete.
Turbine installation and commissioning work is continuing at Dogger Bank A, with completion of the first phase of the offshore wind farm expected in the second half of calendar year 2025.
When fully complete, Dogger Bank will be the world’s largest offshore wind farm, capable of powering around 6 million UK homes annually.
Dogger Bank Wind Farm is a joint venture between SSE Renewables (40%), Equinor (40%) and Vårgrønn (20%). SSE Renewables is leading construction of the project on behalf of the three joint venture partners. Equinor will be lead operator of the wind farm on completion for its expected operational life of around 35 years.
18th November 2024 in Community News, Construction
- Second Dogger Bank Wind Farm archaeology lecture to take place in Woodmansey, East Riding of Yorkshire.
- New online exhibition to give public access to historical finds in their local area.
- Artefacts uncovered include Anglo-Saxon, Roman, Iron Age and Bronze age remains.
Local residents are invited to attend a detailed lecture about the archaeological excavations and discoveries unearthed during the construction of Dogger Bank Wind Farm’s onshore cable route.
Taking place on Monday 25 November at Woodmansey Village Hall from 6-8pm, this event offers the community a chance to learn about the history of Holderness and shares insight into how new infrastructure projects can lead to unexpected glimpses into ancient times and lives.
Led by archaeologists Rebecca Jarosz-Blackburn and Matt Walker from AOC Archaeology Group, the lecture will delve into a range of finds unearthed along the 30km corridor that houses the underground cables transmitting renewable energy from the North Sea to the wind farm’s two onshore convertor stations off the A1079 near Beverley. The free event is open to all and will conclude with a Q&A session.
The lecture will cover:
- An overview of archaeology in Holderness and what archaeological results can tell us about those who lived here
- How archaeology is excavated and recorded and what archaeological works were undertaken during the construction of Dogger Bank Wind Farm
- Significant discoveries, including an Iron Age Roman settlement uncovered near Leven and an early medieval surprise of an Anglo-Saxon long hall structure between Beeford and Skipsea
Dogger Bank Wind Farm has commissioned the production of replica artefacts found during the construction of the cable route. Created using a technique known as photogrammetry, the replicas are hand-painted and 3D printed to accurately recreate the look and feel of the very artefacts found during excavations. These artefact reproductions will be used by local schools for education purposes and include replicas of a 6,000-year-old Neolithic flint arrowhead, an Iron Age or Anglo-Saxon glass bead, an Iron Age to Roman bone comb and pottery fragments likely to date back more than 2,000 years.
For budding archaeologists these replica artefacts will be available to handle before the lecture from 5.30pm until 6pm in a special drop-in session for anyone aged over 6 years. The replicas will also be able to view and handle following the talk and presentation.
Community Engagement Manager for Dogger Bank Wind Farm, Rachel Palmer, said:
“Safeguarding historical evidence has been a critical part of our preparation work on Dogger Bank Wind Farm. We’re delighted we’re now able to share these exciting findings with the people who live in the towns and villages where this work was undertaken.
“This second public event coincides with the launch of our online exhibition, giving the public first-hand access to this treasure trove of historical findings. It’s our great privilege to be able to finally share our findings and answer some of the previously unknown questions about life in Holderness long ago. ”
AOC Archaeology Group is one of the most experienced heritage companies in Britain and was contracted by Dogger Bank Wind Farm as specialist archaeologists. Their analysis has been supported by a wide team of artefact and period specialists.
An online exhibition detailing historical finds from the construction of Dogger Bank Wind Farm can be accessed by visiting www.doggerbank.com/archaeology. The online exhibition features an interactive map to explore 22 excavated sites alongside a wealth of information about AOC’s work in the East Riding of Yorkshire.
Project Manager for AOC Archaeology, Rebecca Jarosz- Blackburn, said:
“Archaeology is all around us and it’s important that when we build for the future, we ensure our past is protected. I’m really looking forward to sharing what we found during Dogger Bank construction by both meeting the community at Woodmansey and showcasing our discoveries and finds online.
“I hope our online archaeological exhibition and the option to zoom in and see exactly where discoveries were made brings East Riding’s rich history to life. There are more artefacts that we are still analysing and as our understanding becomes clearer, adding to our online exhibition means we will be able to share these with a wider audience.”
Woodmansey Village Hall was chosen for this event due to its proximity to the wind farm’s convertor stations near Beverley. The event is supported by Woodmansey Parish Council and Woodmansey Village Hall.
AOC Project Manager Matt Walker, who grew up in East Yorkshire, also has a local connection to the Dogger Bank project. He said:
“At Dogger Bank, one of our main research aims was to try and narrow the current date ranges for handmade prehistoric and Roman pottery in the region by using radiocarbon dating.
“It is the scale of this project across the region, coupled with funding for radiocarbon dates, that gives us a really meaningful opportunity to add to this research theme and advance our understanding of Holderness thousands of years ago.”
“What we discovered during the archaeological investigations for Dogger Bank offers a deep insight into communities who lived in Holderness many centuries ago and, as a person proud to call this area my home, this feels very special to me.”
AOC and Dogger Bank Wind Farm are currently considering options for permanently locating the original artefacts once they’ve been fully analysed, with a preference to find a home close to where they were unearthed.
Set to be the world’s largest offshore wind farm once complete, Dogger Bank is situated over 130km from the Yorkshire coast and will produce enough renewable energy to supply electricity to six million homes in the UK annually. The wind farm, a joint venture between SSE Renewables, Equinor, and Vårgrønn, produced first power in October 2023.
The first two phases of the wind farm will transmit renewable energy into the national electricity network via the Creyke Beck substation near Beverley, close to the site where the project has built two onshore convertor stations over the last four years.
23rd July 2024 in Construction, Press releases, Project news, Supply Chain
- Over 200 miles/328km of 66KV cables manufactured by Hellenic Cables under a contract with DEME Offshore.
More than 200 miles (328 km) of 66KV inter-array cables have been successfully installed by delivery partners working on the construction of the world’s largest offshore wind farm.
The cables were laid by DEME Offshore’s Viking Neptun, with burial works being completed by DEME Offshore’s Living Stone.
This work marks the completion of all inter-array cables on the first phase of the wind farm, Dogger Bank A, which began generating power in October 2023.
The network of 95 cables in a multitude of lengths up to 8.6 miles, will connect Dogger Bank A’s 95 Haliade-X 13MW turbines to the Dogger Bank A offshore convertor station. From here the electricity is converted into direct current for transmission to Dogger Bank A’s onshore convertor station via a pioneering HVDC system.
The laying of cables is carried out using a specialist cable lay vessel that uses a carousel and tensioner device, to deploy cable over the stern chute of the vessel and onto the surface of the seabed. The second stage involves connecting the cable to the offshore platform as well as each individual wind turbine.
This challenging engineering process follows on from an intensive preparation period involving underwater surveys, to ensure the cable laying corridor is clear of obstacles.
The 66KV inter-array cables were manufactured by Hellenic Cables under a contract with Dogger Bank tier one contractor DEME Offshore.
Hellenic Cables and Deme Offshore are also responsible for the manufacture and installation of inter-array cables for Dogger Bank B and C. The first inter-array cable for Dogger Bank B is expected to be installed from autumn 2024.
Alan Evans, Dogger Bank Wind Farm Marine Package Manager, said:
“This is another important part of our Dogger Bank A marine work complete, and is the result of a great collaboration between all parties involved.
“With 277 cables to be installed in total, it’s by far the biggest inter-array cable installation programme undertaken to date in offshore wind.
“The safe and smooth completion of this phase is a huge credit to the entire team.”
Geert Linthout, Project Director – DEME offshore, said:
“The teams at Dogger Bank and DEME Offshore have collaborated closely to achieve this significant project milestone.
“Throughout the execution, DEME Offshore has successfully deployed both the Living Stone and the newly added cable installation vessel Viking Neptun, demonstrating outstanding performance.
“This has provided a solid and reliable basis for the upcoming Dogger Bank B phase and, subsequently, the Dogger Bank C phase. We are excited to continue our strong working relationship on Dogger Bank B and Dogger Bank C.”
14th May 2024 in Construction, Press releases, Project news
Image: Seaway7’s vessel Seaway Strashnov in operations on Dogger Bank Wind Farm.
The team working on what will be the world’s largest offshore wind farm, Dogger Bank, have started work on the foundation installation campaign for the second phase of the development.
Seaway7’s vessels Seaway Strashnov and Seaway Alfa Lift have commenced installation of monopile foundations and transition pieces for the Dogger Bank B phase of the offshore wind farm project.
The team recently completed installation of all 95 transition pieces on Dogger Bank A, thus concluding the installation of the foundations for the first phase of the project.
Olly Cass, Dogger Bank Wind Farm Project Director, said:
“These installation milestones are the result of years of commitment and diligence from the project team and its delivery partners. As the world’s largest wind farm of its kind and due to the deployment of new turbine technology, every aspect of the wind farm has required us to come up with new innovative design and engineering solutions that will shape the future construction of offshore wind globally. We extend our thanks and congratulations to the many companies and individuals who’ve risen to this challenge and contributed to the milestone we’re celebrating today.”
Wouter van Dalen, Project Director, Seaway7, said:
“We are happy to welcome Seaway Strashnov back to the project to commence foundation installation on Dogger Bank B – leading on from the vessel’s good performance last year on Dogger Bank A. After introducing our brand-new heavy lift vessel Seaway Alfa Lift to the project in October, the vessel operated through the high weather season installing transition pieces on Dogger Bank A, and now continues this work in phase B. The foundation installation scope is making excellent progress, enabled by our strong collaboration with our client Dogger Bank Wind Farm and our subcontractors.”
The monopile foundations and transition pieces provide a solid and stable base for the scale of GE Vernova’s groundbreaking 13MW Haliade-X turbines. The monopile and transition piece structures were manufactured by Sif and Smulders and are being installed 80-miles off the Yorkshire coast by tier one contractor Seaway7.
Monopiles are the large-diameter tube-shaped steel structures that are installed in the seabed by the vessel using dynamic positioning technology.
The monopiles weigh in at up to 1,424 tonnes each and can measure up to 72.8 metres in length. The Dogger Bank transition pieces feature a pioneering split-level design to support safe installation and operation and have a record-breaking 8m flange to connect the monopiles and transition piece structures.
Confirmation of this offshore milestone on Dogger Bank B follows on from the successful installation of the offshore HVDC platform for the second phase of the wind farm in April.
A total of 277 monopiles and transition pieces will be installed across all three phases of the wind farm, with completion due in 2026.
Steel manufactured by Tata Steel in Wales and processed in Corby and Hartlepool is being used in the supporting components of the transition pieces, while South Tyneside-based Metec and Rochdale-based Granada Material Handling have also won contracts with Smulders to support this innovative and world-leading project.
Designed in the UK by experts from Wood Thilsted, Dogger Bank Wind Farm’s foundations have been optimised to tackle challenging wave loads in the Dogger Bank area of the North Sea, with installation in water depths of up to 32m and at a minimum distance of 130km from shore.
17th April 2024 in Construction, Press releases, Project news, Supply Chain
Dogger Bank, set to become the world’s largest offshore wind farm, has achieved a significant milestone as the second unmanned High Voltage Direct Current (HVDC) platform has been installed by Saipem.
The substation is the second of three platforms, each supplied by Aibel, to be installed at Dogger Bank offshore wind farm, which is being constructed in three phases known as A, B, and C, each with a capacity of 1.2GW.
The platform was installed 130km from the UK coastline at Dogger Bank B by Saipem using the Saipem 7000 vessel and features a Hitachi Energy HVDC system developed to transmit power more efficiently than traditional AC systems. The platform will receive 1.2GW of AC power generated by the 95 offshore wind turbines of Dogger Bank B, before converting it to DC for transmission to an onshore converter station located near Beverley in East Riding of Yorkshire.
The first platform was installed at Dogger Bank A in April 2023, representing the first time this technology has been used in offshore wind in the UK. All three platforms will be controlled from shore and feature a lean design, resulting in a 70% weight reduction per MW compared to previous platform designs.
Mads Andersen, CEO and President of Aibel said:
“At Aibel, we recognize that our success is not measured solely by the completion of projects but by the lasting impact we leave on the industry. With this major on-time delivery of Dogger Bank B, we mark another important milestone in Aibel’s transition towards a greener industry. This achievement exemplifies the power of collaboration and reflects the enduring partnerships we have cultivated with industry leaders SSE Renewables, Equinor, Vårgrønn, and our esteemed partner, Hitachi Energy”.
Andreas Berthou, Head of HVDC at Hitachi Energy’s Grid Integration business, said:
“The urgent energy transition requires strong collaboration, new business models, and global standards. We are proud to be the technology partner for the Dogger Bank Wind Farm project, with HVDC being the force multiplier for the clean energy transition, increasing access to an energy system that is more sustainable, flexible and secure. This is another significant milestone in securing the UK’s future energy needs, made possible by foresighted partners such as SSE Renewables, Equinor and Vårgrønn that have made the UK a leader in the transition to clean power.”
Measuring 75 meters long x 45 meters wide x 39 meters high, the platform utilises a four-legged steel jacket foundation structure designed and fabricated by Saipem in water depths of around 28 meters.
Gianalberto Secchi, COO of Saipem’s Offshore Wind Business Line, commented:
“We are proud to have contributed to the achievement of this important milestone for the groundbreaking Dogger Bank project, which reaffirms Saipem’s leadership in the offshore industry and our expertise in supporting Clients in the development of offshore wind farms as a key resource for the energy transition worldwide.”
