Offshore Wind

Walney Extension Offshore Wind Farm | OHVS
Irish Sea, United Kingdom
Walney Extension Offshore Wind Farm | OHVS

Smulders was responsible for the construction of 2 topsides and 2 jackets for the Walney Extension Offshore Wind Farm.


Both topsides, standing 35 metres tall and weighing in at 2,900 tons were accompanied by its 48-metre-high jacket foundation and left the yard in Hoboken in March. 


The Walney wind farm in the Irish Sea, 19 km off the coast of Cumbria, already comprises two substations. It is currently being expanded to include two additional substations, making it the largest offshore wind farm in Europe. It will supply green power to 600,000 families in the UK, with the expansion due to commission in 2018.


Project data:


  • Client: Dong Energy
  • Utility: Dong Energy
  • Weight topsides: 2x 1,260 tons (steel)
  • Weight jacket 03: 1,294 tons 
  • Weight jacket 04: 1,479 tons
  • Weight piles 03: 911 tons
  • Weight piles 04: 704 tons