Cable installation has been halted at the Gwynt y Môr offshore wind farm this month.
The Reef Subsea-owned vessel, Polar Prince, is undergoing DNV class inspection in dry dock.
According to RWE Innogy, the project developer, this will not affect their schedule as the ship maintenance was planned.
The vessel is due to resume its activities next week.
A total of 119 array cables have been installed so far while the remaining 42 are expected to be completed by this winter.
A2SEA’s jack-up barges SEA JACK and SEA WORKER completed the installation of 160 wind turbines last month totaling the capacity of this project to 576MW.
Offshore WIND staff, July 18, 2014; Image: reefsubsea