Belgium's Jan De Nul is selling one of its two older wind turbine installation vessel (WTIVs) as it looks ahead to the delivery of the next-generation of ships.
The 139-loa jack-up Taillevent (built 2011) will leave the fleet, but its crew will be re-deployed to other group ships.
The company said the move was being made "with next-generation offshore wind farms almost upon us".