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Unique grillage design developed by Conbit

Conbit Offers a Complete Package With a Unique Grillage Design

Conbit has developed a unique grillage design as part of a collaborative scope for an offshore wind farm project in the UK and one of the biggest in the world.

Conbit provides specialist offshore engineering for their parent company, ALE. 

ALE was contracted to provide marine transportation, sea-fastening, load-out, and ballasting of over 100 TPs for Ørsted’s Hornsea Project One -- set to be the biggest wind farm in the world.

Conbit reused and adapted existing grillages for the new project for structural engineering. Their internal structural engineering expertise helped them conduct the structural integrity and sea fastening calculations of the grillages on the barge deck.

Design used for monopiles

Once on the SARAH S barge, ALE’s latest marine investment, the TPs will be transported on the River Tees to the discharge berth. 

Conbit also provided the engineering for cost-effective storage and SPMT stability during the ALE transport operations at the yard. For the storage at the quay, Conbit designed monopile cradles. These were specifically optimized to reduce costs, as the need for welding works is reduced.

Ensuring stability during the SPMT move was challenging. The Conbit engineers improved the hydraulic stability during the monopile positioning in relation to the sling configuration used for loading onto the SPMTs and positioning within the support cradles.

“Using our in-house expertise, we could provide a cost-effective and safer solution for ALE to perform the heavy transport operations. This project shows the strength of the ALE–Conbit collaboration, as we are now, can provide clients with the complete service package, from transport to engineering and stress checks.” 

~ Bart Steerneman, Engineering Manager for Conbit

So far, ALE has loaded out the first five TPs and successfully completed the first discharge onto the installation vessel.

The Hornsea One wind farm is the world’s largest offshore wind farm under development, located in the North Sea.

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Bram van Oirschot

Commercial Director


Conbit B.V.

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Bram van Oirschot

Bram van Oirschot

Commercial Director