LEIDEN, the Netherlands – Heerema Marine Contractors’ semisubmersible crane vessel Sleipnir has installed both offshore substations for Ørsted’s Hornsea Two wind farm in the UK North Sea.
In October 2020, the Sleipnir installed the offshore substation (OSS) and reactive compensation station (RCS) jacket foundations. The vessel has now returned to install the topsides.
The Sleipnir traveled to the OSS location on Oct. 18 and installed the 8,000-metric ton OSS topsides. After that, the vessel moved to the shallow water RCS location and installed the 2,000-metric ton RCS topsides.
According to Heerema, the vessel ran on LNG during both Hornsea Two installation projects.
Ørsted’s Hornsea Two wind farm is about 89 km (55 mi) offshore the Yorkshire coast in the North Sea. The project will consist of 165 turbines with a combined total capacity of 1.4 GW. It is expected to be operational next year.