Keeping a transport vessel tethered to the turbine base to check suitability of installation on bed

摘要

Disclosed is a method of installing a base (12) and a hydroelectric turbine (10) onto the bed of a body of water (B). The method comprises the steps of: connecting the turbine to the base; transporting the base and turbine to a deployment site (S) by a deployment vessel (14); lowering the base onto the seabed from the vessel; keeping the vessel tethered to the base; establishing the suitability of the installation; and disconnecting the vessel from the base.