Hornsea One foundation installation completed

The DEME Offshore Hornsea One project team has successfully installed the last of 174 foundations for what will become the largest wind farm in the world.
Hornsea One foundation installation completed
Courtesy of DEME Group

The foundation installation, including scour protection, was completed yesterday, April 25. It was executed with a significant number of vessels from DEME Offshore’s fleet. The scour protection was installed with the rock placement vessel ‘Rolling Stone’. The jack-up vessel ‘Innovation’ was deployed to install monopiles and transition pieces and the jack-up vessels ‘Sea Installer’ and ‘Sea Challenger’ executed a large part of the TP installation in a split campaign with the ‘Innovation’. The installation of more than 30,000 bolts for the connection between monopiles and transition pieces was executed from several vessels. DEME Offshore’s  newest jack-up ‘Apollo’ removed the existing met-mast including decommissioning of the twisted jacket foundation.

DEME Offshore was also responsible for all the logistics related to the foundations, collection and transport of the monopiles and transition pieces. Barges and transport vessels were hired and all operated from the base port Able Seaton in the UK.

The scope of the world’s largest offshore wind farm was a massive project, both for Able Seaton and for the DEME Offshore organisation, and has turned out into a great success thanks to the hard work and dedication from a dynamic, driven team who always maintained a keen focus on quality and safety, based on very close cooperation between the Ørsted installation teams and the DEME Offshore teams.

“This project demonstrates once more that DEME Offshore is capable of managing large projects of 100 or more units to be installed within a year” said Jan Klaassen, Business Unit Manager DEME Offshore. “Our expertise and flexibility to cope with complex logistics and installations is the key to a successful, swift and safe delivery of future large projects, wherever in the world.”

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