The first new far-shore offshore maintenance vessels will begin operations this week in Baltic Sea and North Sea, providing on-site accommodation and repair facilities to Siemens turbines.
The vessels can provide accommodation for up to 40 technicians, storage for small turbine parts and a workshop. They have personnel transfer capabilities in up to 2.5 metre significant wave height.
And the vessels include a Safe Transfer Boat (STB) 12 and smaller STB 7 vessel for transfer to turbines, as well as an Ampelmann walk-to-work system that compensates for wave motion.
The twin vessels are already fully committed to a wind project each, and are chartered by Siemens to support their servicing contracts of the wind projects.
Both Baltic II and Butendiek have 80 Siemens 3.6MW turbines, but are sited far enough from shore to make daily trips for the technicians uneconomical.
The vessels can stay at the site for periods of two weeks to a month. Siemens has a servicing contract of five years at Baltic II, owned by EnBW and ten years at Butendiek, owned by Wpd.