CSL OWL SRI Orders Two Newbuild Subsea Rock Installation Vessels to Service Offshore Wind Sector

Vessel Highlights

CSL OWL SRI is an independent marine contractor specializing in subsea rock installation services, dedicated to delivering safe, sustainable and cost-effective solutions for the installation and maintenance of subsea rock. Based in Rotterdam, the company combines OWL's extensive experience in the offshore marine construction sector with CSL's expertise as a leading provider of complex marine solutions.

"We are committed to providing tailormade capacity to the fast-growing offshore renewable sector. This will support the sectors' ambitions of ramping up installed capacity, reducing the levelized cost of energy (LCOE) and minimizing emissions," said Maarten van der Giessen, CEO of CSL OWL SRI.

"Our subsea rock installation solutions are specifically designed to enhance flexibility and cost efficiency for operations in and around bottom-fixed wind farms and associated cables. We believe in making green energy affordable and are committed to doing our part by optimizing offshore renewable energy logistics."

The first subsea rock installation vessel is scheduled for delivery from the shipyard in August 2026, followed by the second vessel in November 2026.

The CSL Group is a world class provider of complex marine solutions and the largest owner and operator of self-unloading ships in the world. Headquartered in Montreal with operations throughout the Americas, Australia, Europe and Africa, CSL provides a broad range of shipping and handling services, and delivers millions of tonnes of cargo annually for customers in the construction, steel, energy and agri-food sectors.

OWL is renowned for its top-tier logistics solutions in the offshore wind sector, further enhanced by its industry-leading capabilities. The company was founded to enhance the efficiency of the offshore wind logistics supply chain, both operationally and financially.

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Brigitte Hébert, Director, Communications
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