SPUTNIK / SCIENCE PHOTO LIBRARY SPUTNIK / SCIENCE PHOTO LIBRARY
Jackup drilling rig. A jackup rig is a mobile platform with a buoyant hull and a number of movable legs, which can raise the hull over the surface of the sea. The buoyant hull allows the unit to be moved, usually by tugs, to the desired location. This is the Arkticheskaya floating drilling rig located in the Baltic Sea near Kaliningrad, Russia, where it is engaged in exploratory drilling for oil.
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