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Home›Fixed-Bottom›Thialf Arrives in US Ahead of Empire Wind 1 Foundation Installation
Fixed-Bottom

May 28, 2025 · about 1 year ago

Thialf Arrives in US Ahead of Empire Wind 1 Foundation Installation

The semi-submersible crane vessel (SSCV) Thialf, the second-largest vessel of this kind in the world, has arrived in the US. The SSCV, which was deployed on oil and gas projects in the US several years ago, has now returned to the country to work on Equinor’s offshore wind farm in the federal waters

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Heerema Marine Contractors' vessel Thialf at EnBW He Dreiht offshore wind farm equipped with IQIP noise reduction tools
Photo source: Heerema Marine Contractors via LinkedIn

The foundations for the 810 MW offshore wind farm are manufactured by Sif.

Sif rolled out the first monopile for Empire Wind 1 at its new factory in the Netherlands in November 2024 and has so far produced 30 of the total 54 monopiles and all primary steel for the transition pieces for the US project.

Related Article

Sif Officially Opens Monopile Mega-Factory, New Facility Already Rolled Out 30 Empire Wind 1 Foundations

Empire Wind 1 will comprise 54 Vestas 15 MW turbines, which are planned to be installed using Maersk’s new Wind Installation Vessel (WIV) that was recently launched to sea at Seatrium’s shipyard in Singapore.

Located 25-48 kilometres southeast of Long Island, the Empire Wind 1 offshore wind farm is planned to produce first power in late 2026, with full commissioning in 2027. With a generation capacity of 810 MW, the offshore wind farm will power 500,000 New York City households, according to Equinor.

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