Peter Madsen Rederi A/S has completed work on Amrumbank West Offshore Wind Farm in the North Sea.
The Danish company has laid 45,000 sand bags around wind turbine foundations to prevent scour forming which would destabilise the foundation.
The bags were filled with 60,000 tons of dredged sand, which were laid in a period of six months.
After being shipped to the Amrumbank site via supply barge, four Peter Madsen vessels placed two layers of bags around each of the 80 planned turbine sites.
Offshore WIND Staff, November 25, 2013; Image: engcrew