Geotechnical investigations to soon start at Caledonia offshore wind farm site
What happened
Fugro will begin a geotechnical survey campaign at the Caledonia offshore wind site with the first survey vessel expected in early May and a second vessel following days later. The program runs into the northern summer and includes downhole cone penetration tests, seismic CPT, PS logging and borehole sampling using named vessels, making the timing and execution dependencies concrete. Watch whether vessel schedules or sample windows shift, which would tighten contractor mobilisation and port slot needs
Buyer takeaway
Treat the campaign as an operational demand pull on marine survey and port services that can reduce supplier slack and raise day rates; it's a real scheduling constraint, not a distant plan
Cost / money
Directional risk of higher short-run hire rates and increased port/service fees if buyers need to rebook vessels or crane lifts around the campaign
Supplier / commercial
Suppliers can shorten quote validity and require firm mobilisation windows; expect push-back on extended payment terms or open-ended holds
Safety / operations
More marine traffic and heavy sampling operations increase coordination and permit needs; inadequate deconfliction can raise safety and access risk for nearby site activities
What to watch
Watch for supplier notices on availability, any changes to vessel ETA windows, and port slot confirmations that would directly affect local project schedules
Key facts
- First survey vessel expected on site no earlier than May 9
- Second vessel scheduled to arrive from May 12
- Campaign planned to run until approximately August 19 and includes CPT, seismic CPT, PS loggi
Source excerpts
According to a Notice to Mariners, the first survey vessel is expected on site no earlier than May 9, with a second vessel scheduled to arrive from May 12. The offshore works are planned to run until approximately August 19, 2026
The geotechnical works follow a recent geophysical survey campaign at the site, which started in February
Fugro will undertake the downhole CPT, seismic CPT and PS logging operations using the vessel RS Alegranza, while the borehole sampling will be conducted using Fugro Synergy. The geotechnical works follow a recent geophysical survey campaign at the site, which started in February
