big waves hitting a semi submersible drilling rig

anchor anchors atlantic black boat boats business cloud clouds coast commercial construction crane currency derrick drill drilling energy engine environment environmental equipment europe exploration extract fuel gas gasoline generation handling industry installation installations large machine maritime mineral move moving natural nature north occupation ocean offshore oil oilrig petrochemistry pipe pipeline plant platform pollution power pump resource rig sea semi shipping silhouette sky submersible supply technology tow tower towing tug vessel water wire wires working