Belgian shipowner DEME is upgrading one of its wind turbine installation vessels (WTIVs) ahead of its debut contract in the US.

The DP2-rated Sea Installer (built 2015) will have its crane capacity increased from 900 tonnes to 1,600 tonnes to enable it to handle the next generation of offshore wind turbines.

Huisman, which is supplying the leg encircling crane, said it will have a limited weight impact on the vessel.