Belgium’s Jan De Nul has fixed out its two huge new wind turbine installation vessels (WTIVs) to RWE in Germany.

The utility company has taken the 21,500-dwt Voltaire (built 2022) for at least four years and the 61,000-dwt Les Alizes (built 2023) for more than five years.

Rates for the exclusive charters have not been given.