An off-shore oil rig on a production/drilling platform (artificial island fabricated from steel). It is shown here without the drilling tender which will be positioned just under the window maker which is shown here at extreme right, hanging at an angle of 45 degrees. Another option is to install every thing on the drilling platform without using a tender. For that you will need a larger platform with subsequent increase in costs. The crane barge CB2 is shown in the background. It has just installed the derrick set on to the drilling platform.
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