Hydrosphere supplied temporary marine navigation lights and navigation buoys for the Greater Gabbard Offshore Wind Farm during construction under engagement by Fluor. Hydrosphere delivered 174 solar-powered marine navigation lights used to mark monopile foundations and recommended and arranged supply of six cardinal navigation buoys (JET 9000) to mark the wind turbines, supported by site and design study for buoy and mooring suitability. Hydrosphere also carried out scheduled maintenance visits during the buoy rental period.