top of page


Transportation by sea of monopiles for offshore wind farms. Location: United Kingdom


For the installation of offshore wind farms, the components, including monopiles (hereinafter: MP’s) are transported by sea on specially constructed heavy-lift vessels.


Holmatro have designed the so-called seafastening construction for the UK installation company Seajacks that ensure that the MPs remain securely in position, even in the most extreme circumstances. The MPs (weight: 600 ton p/pcs) rest on two support points and are secured to the deck with straps with the aid of a saddle construction. Four straps, each with a pre-stressed capacity of a minimum of 50 tons, must be anchored to each support point. The pre-stressing is ensured with the aid of an auxiliary construction with 2 large stud ends.

THE SOLUTION Holmatro supplied the pulling cylinders, each with a capacity of 60 tons, for this purpose. In view of the fact that cylinders remain in the construction for a long period of time, they have been made resistant to the conditions at sea. They are also fitted with special couplings that are suitable for offshore applications.

Recent Posts
Follow Us
  • Twitter Basic Square
  • Facebook Basic Square
  • LinkedIn Social Icon
bottom of page