IN Brief:
- Cadeler has appointed Fugro to carry out post-installation seabed surveys at the 960MW East Anglia TWO wind farm.
- Fugro plans to deploy its FCV 600 work-class remotely operated vehicle at 64 monopile foundation positions from early 2027.
- The contract is separate from Fugro’s Hornsea 3 alignment and positioning work and earlier East Anglia TWO cable landfall construction.
Fugro has secured a contract from Cadeler to provide post-installation seabed surveys for East Anglia TWO, the 960MW offshore wind project being developed off the coast of East Anglia. The work will use a work-class remotely operated vehicle to collect seabed and foundation information after monopile installation. Fugro is due to begin the programme in early 2027, with inspections planned at 64 foundation locations.
Beginning in early 2027, Fugro plans to deploy its FCV 600 work-class remotely operated vehicle from Cadeler’s offshore installation vessel. It will inspect 64 monopile foundation locations and deliver information on the installed condition. The contractor has not published the value or duration of the survey award, nor a detailed instrument manifest for the vehicle on this particular campaign.
East Anglia TWO has a planned generating capacity of 960MW. Cadeler is responsible for offshore transportation and installation work covering foundations and turbines, while Fugro’s newly awarded scope comes after monopile installation. The surveys are not the earlier geotechnical investigations used to select or design foundation locations, and they do not establish that all 64 foundations have already been installed.
A monopile transfers loads from the turbine tower into the seabed through its embedded steel section. Installation can change local sediment conditions, while currents and wave action can redistribute seabed material around the structure. Survey information helps engineers compare the as-built seabed and foundation environment with the expected condition, identify any differences requiring review and establish a reference for subsequent inspections. The exact tests depend on the approved survey specification.
An ROV can operate around a foundation where access from the surface would be difficult or where underwater conditions require remotely controlled observation. The vehicle is launched and recovered from the vessel and can be equipped with subsea cameras and measurement instruments appropriate to the assigned work. Its findings depend on seabed visibility, instrument configuration, navigation accuracy and the quality of survey processing rather than visual inspection alone.
The FCV 600 is a work-class platform for remotely controlled underwater inspection and support. Fugro has employed equipment from this vehicle family on other subsea projects, sometimes with accessories selected for strong currents or particular seabed conditions. The company has not said that any such additional package will be used for East Anglia TWO, so earlier configurations cannot be assumed to form part of the new award.
Survey results will be assessed alongside installation records rather than replace them. An ROV image or measurement may show that an installed condition differs from the intended design, but deciding whether that difference is acceptable requires the project engineers to consider the applicable limits and other evidence. Any remedial work would depend on that assessment; the contract announcement does not identify a present defect or an expected need for foundation repair.
At Hornsea 3, a separate Cadeler project, Fugro is already supplying positioning and construction services aboard the installation vessel Wind Ally. That assignment covers 197 monopile foundations, and Fugro says its InclinoCam system measures tilt, inclination and vertical alignment during installation. Its reported centimetre-level accuracy relates to the Hornsea 3 positioning work, not a performance guarantee for the East Anglia TWO post-installation survey campaign.
The distinction between live positioning and post-installation surveys is relevant to the sequence of offshore works. Positioning systems help the installation crew control where and how a pile enters the seabed. Follow-up surveys document the resulting condition and support assessment of the installed foundation. Both create engineering records, but they answer different questions and may be delivered by different vessel teams.
Onshore enabling work at East Anglia TWO has included the installation of cable landfall ducts, a separate project stage. Those ducts form part of the route by which electricity from the offshore project will ultimately reach the onshore network. Foundation verification, turbine erection, cable installation, electrical tests and energisation remain distinct activities; none can be inferred as complete from this survey contract award.
The survey award adds another specialist package to Cadeler’s planned offshore construction operation. Future offshore activity will remain sensitive to vessel scheduling and weather access, particularly where several work fronts depend on a common installation vessel. The available project documentation does not establish a final date for completion of Fugro’s survey programme or state how many foundations can be inspected during one offshore campaign.
The new contract assigns Fugro survey work at 64 foundation positions from early 2027. Its delivery will depend on the installation vessel’s programme and offshore access conditions, and Fugro has not given a completion date. Verified seabed measurements, once collected and assessed, will provide the evidence on the foundations’ installed condition rather than a guarantee of performance in advance.
