Huisman to supply installation spread for Seaway7’s new wind turbine installation vessel

Dutch lifting equipment specialist Huisman has been contrcated by Seaway7 to supply the entire monopile installation spread for their jack-up vessel Seaway Ventus.

The monopile installation spread consists of a Monopile Gripper, an Upending Frame, and two sets of Monopile Storage Cradles. The spread will be engineered, built, and installed on the Seaway Ventus at Huisman’s premises in Schiedam, the Netherlands. Delivery is scheduled for Q4, 2024.

Maximum payload

Huisman has modified its existing gripper design to meet Subsea7’s requirement to maximise the vessel payload. For this new design Huisman applied the proven technology of its existing range of Grippers. This has resulted in a lightweight, robust and very stiff Monopile Gripper, capable of handling XXL monopiles. The high structural stiffness increases control over the monopile and improves accuracy.

Huisman has paid special attention to optimising the upending process. The Monopile Upending Frame is adjustable in length and therefore suitable for handling a wide range of monopiles. Vertical adjustment of the ring allows inboard storage as well as low operating position. A six-roller configuration allows roller boxes to be retracted whilst keeping full control over the monopile.

The Monopile Storage Cradles are outfitted with adjustable saddles to be able to store various monopiles sizes. The cradles can be expanded with an additional layer to double the vessel’s storage capacity.

Quick (de)mobilisation

Since the Seaway Ventus will be deployed for monopile as well as wind turbine installation, Huisman has taken into account easy and quick (de)mobilisation of the monopile installation spread. The equipment will be integrated in the vessel in such a way that the permanent installed parts are kept to a minimum, further maximising the payload.

Inboard storage position with NMS system is attached for easy maintenance. The spread is compatible with all industry standard noise mitigation systems currently available.

First wind installation contract with Subsea7 group

“We are grateful to Seaway7 for trusting us to equip their vessel with the entire installation spread. This is where we add value, supplying integrated lifting equipment that increases safety, efficiency and workability. After building a long track record of Pipelay Systems with Seaway7’s parent company Subsea7, this order marks our first contract with the group for wind installation equipment. We are extremely excited to join them in their ambition to lead the way in the delivery of fixed offshore wind projects, and contributing to an efficient and sustainable energy supply for the future.”

David Roodenburg, CEO of Huisman

Seaway7’s self-propelled jack-up vessel Seaway Ventus will join the fleet in 2023. The GustoMSC NG-14000XL-G jack-up is designed to install future-generations of offshore wind turbines and XL monopile foundations.

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