Day rates for the vessel brought in for the job — Heerema’s gargantuan Thialf, a titan from the offshore oil industry capable of lifting 12,000 tonnes — can run as high as €1m ($1.35m) a day.
But it was a cost that had to be borne by transmission system operator TenneT to catch up on its behind-schedule programme to build Germany’s North Sea offshore grid network — budgeted at €1bn per GW.
Tens
