aerial view of semi submersible off shore oil rig

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Unlike rigs on very long legs that reach the bottom this unit floats on huge air tight cylinders running horizontally just below the water surface The rig is anchored to the bottom with steal cables and then kept in position with a computer

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Size: 3511px × 5267px
Location: San Francisco, CA
Photo credit: © Tom Tracy Photography / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: drill, drilling, enviroment, offshore, oil, petroleum, platform, resource, rig, semi, shore, submersible