Deme Offshore’s Sea Installer offshore construction vessel has completed installation of the 102 Siemens Gamesa 7MW turbines making up developer Iberdrola’s 714MW East Anglia 1 project off the UK.

Installation started in June 2019, with the contractor sailing out the Sea Installer and Sea Challenger to speed construction after severe weather conditions during autumn and winter at the site, located some 34km off the coast of north-east England.