Texas-based Great Lakes Dredge & Dock Corporation (GLDD) has taken delivery of Acadia, the first US-flagged, Jones Act-compliant subsea rock installation vessel (SRIV).
GLDD The vessel was ordered from Philly Shipyard, Inc. In 2021, with First cut steel In July 2023 and I put on a keel In May 2024. Acadia It was then released into the water Delaware River at Hanwha Philly Shipyard in July 2025 and Sea trials began Practice this.
“The delivery of Acadia represents a transformative moment for the Great Lakes region and underscores our commitment to installing and protecting domestic and international offshore energy infrastructure.” He said Lacy PetersonPresident and CEO of GLDD.
“This highly specialized vessel puts us at the forefront of subsea rock installation in the U.S. and international markets and enables us to play a critical role in major projects like Empire Wind 1 and Sunrise Wind that provide a reliable and affordable clean energy solution for New York State.”
The SRIV, designed by S211 by Ulstein, is capable of transporting and installing up to 20,000 metric tons of rock on the seafloor, used as critical protection for subsea infrastructure such as power transmission cables, telecommunications cables, oil and gas pipelines, and offshore wind turbine foundations, among others.
The ship has a total length of 140.5 meters and a width of 34.1 metres, and can accommodate 45 people.
Following delivery, Acadia will mobilize for Equinor’s Empire Wind 1 offshore wind project in New York, after which it is expected to move directly to Ørsted’s Sunrise Wind project, also located offshore New York.
After these two American projects, the ship will be mobilized to Europe to begin installing rock for “Major developer of offshore wind energy”GLDD said it will remain busy for most of 2027.
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