Mammoet has signed a support agreement to assist Heerema Marine Contractors in the offshore installation of two massive topsides as part of TenneT’s landmark 2GW Programme in the North Sea.
Preparing for Floatover
Mammoet’s scope of work includes skidding the topsides from a heavy transport vessel (HTV) onto Heerema’s newly built H-731 barge using hydraulic skid shoes. Once in position, Mammoet’s Mega Jack System will raise the topsides to the required floatover height.
A Deck Support Frame (DSF) — also referred to as a floatover frame — will then be maneuvered underneath, allowing for the topsides’ final installation onto their jacket foundations.
A Flagship Energy Programme
TenneT’s 2GW Programme represents one of Europe’s most ambitious offshore grid initiatives. By 2032, fourteen high-voltage direct current (HVDC) systems — six in Germany and eight in the Netherlands — will be installed in the North Sea, each with a capacity of 2GW.
These HVDC platforms will play a vital role in transmitting wind energy from offshore farms to the mainland. By converting alternating current (AC) to direct current (DC), they enable higher transmission efficiency and greater capacity using fewer subsea cables.
Securing Europe’s Energy Future
Richard Verhoeff, Sales Director at Mammoet, highlighted the company’s strategic role in the project:
“With this contract, we will be playing a key role in securing the future of energy in Northern Europe while showcasing our unique capabilities in both high-precision skidding and jacking operations.”
