Mariners are advised that maintenance operations are due to be carried out by the jack up vessels Wind Server and MPI Adventure within the Gwynt y Môr Offshore Wind Farm off the North Wales coast during October 2026. A Notice to Mariners about these operations is summarised below and can be downloaded here.
Maintenance operations
The jack up vessels Wind Server and MPI Adventure are due to be carrying out maintenance including heavy lifting at thirteen locations within the Gwynt y Môr Offshore Windfarm area. The location of the turbines can be seen on the Kingfisher Awareness Chart here, and coordinates are given below:-
- F17E: 53° 27.787’N 3° 29.68’W
- D06B: 53° 28.432’N 3° 34.233’W
- G17E: 53° 27.45’N 3° 30’W
- G03P: 53° 27.393’N 3° 39.884’W
- H17F: 53° 27.113’N 3° 30.319’W
- D05A: 53° 28.426’N 3° 35.684’W
- E14D: 53° 28.114’N 3° 31.307’W
- F06R: 53° 27.744’N 3° 37.62’W
- F11H: 53° 27.766’N 3° 33.573’W
- F18E: 53° 27.79’N 3° 29.031’W
- F13F: 53° 27.773’N 3° 32.276’W
- F16E: 53° 27.784’N 3° 30.329’W
- G16E: 53° 27.447’N 3° 30.648’W
The start date for this work is expected to be the 9th of October with an expected duration of 7 weeks. These dates are subject to weather and sea conditions.
This work is being carried out under Marine Licence number 11/52/ML/4 & RML2109v1.
Vessel details
Wind Server is a jack up vessel measuring 80m in length by 32m in width, with a red hull and white superstructure. MPI Adventure is a jack up vessel measuring 138m in length by 41m in width with a blue hull and a white superstructure.
Vessels’ details and links to their present location are given below:-
- Wind Server: jack up vessel | Call sign OWLB2
- MPI Adventure: jack up vessel | Call sign PCKV
When at the specified locations the vessels will be restricted in the ability to manoeuvre and will exhibit signals in accordance with the UK Standard Marking Schedule for Offshore Installations.
Other vessels are asked to observe a 500m exclusion zone at all times and to gain permission from the vessels before approaching within the 500m zone.
The vessels will monitor VHF Channel 16 at all times.
Details of this work are specified in the Notice to Mariners that can be downloaded here.
Notices to Mariners
Mariners are advised that the following Notices to Mariners have been issued for the Gwynt y Môr windfarm and export cable and remain current:-
- Gwynt y Môr offshore windfarm: risk of cable exposure – this notice was issued in September 2021. It advises mariners that there are areas where cables may be exposed within the windfarm array, and that these areas are subject to change in response to tidal and weather effects on the seabed. The information in this notice, as well as links to advice on fishing near cables and renewable energy structures and links to the cable array map for the windfarm can be accessed here.
All other Notices to Mariners have been withdrawn.
Please contact Jim Andrews, Fishery Liaison Officer by e-mail or phone (+44(0)7908-225865) if you have any queries or concerns about this notice.