4C Offshore Empowering Intelligence

ThayerMahan commissioned to survey Vineyard Wind 1

4C Offshore | Tom Russell
By: Tom Russell 27/05/2022 Vineyard Wind

Vineyard Wind has announced a partnership with ThayerMahan for seabed and infrastructure survey and inspection work in the waters off southern Massachusetts.  

Based in Groton, CT, ThayerMahan, specialises in seabed surveys, acoustic mitigation and monitoring, and other maritime related services and has facilities in Connecticut and Massachusetts.  These operations are being conducted from the host vessel – HOS Mystique – with mobilisation and demobilisation's being conducted from Gateway Terminal’s Montville facility at Horton Point.

“Partnering with local companies like ThayerMahan is an essential component of building out the offshore wind industry here in the US,”
said Klaus S. Moeller, CEO of Vineyard Wind.  “The more we go local, the more we can ensure that the many jobs this industry will create in our region will not only take root but flourish.”

The HOS Mystique will have an Offshore Fishery Liaison (OFL) on board to help communicate with commercial fishermen working in the area, in addition to support from the Chicawa, a local fishing vessel that is employed by Vineyard Wind to help survey vessels avoid fixed gear and reduce potential gear entanglement.  The vessels follow all marine mammal mitigation requirements.

“This project is another example of Vineyard Wind honoring its commitment to the local economy and regional workforce,”
said Mike Connor, ThayerMahan President and CEO. “ThayerMahan is excited to support Vineyard Wind as the first and foremost, large-scale, wind farm development in the United States.”

The DeepOcean Group, with engineering support services provided by Jacobs Engineering, will provide the Remotely Operated Vehicles (ROVs).

Vineyward Wind is a joint venture between Avangrid Renewables, a subsidiary of AVANGRID, Inc., and Copenhagen Infrastructure Partners (CIP). Its
Vineyard Wind 1 project is an 800 MW wind farm to be installed 15 miles off the coast of Martha’s Vineyard. It is poised to be the first commercial scale offshore wind project in the United States. The project is expected generate electricity for more than 400,000 homes and businesses in the Commonwealth of Massachusetts.

It will feature 62 of GE renewable Energy's 13 MW Haliade-X turbines. Power will come ashore via and offshore substation and export cables making landfall at Covell's Beach for integration into national grid using an onshore substation.

The developers reached
financial close for the project back in September. Offshore work is expected to start in 2022, with the first power slated for 2023.


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