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Drilling Rigs - Semi-Submersible

A Semi-submersible platform or rig, is a mobile structure used for drilling for oil and natural gas in offshore environments. Their superstructures are supported by columns sitting on hulls or pontoons which are ballasted below the water surface. They provide excellent stability in rough, deep seas. Semi-submersible rigs can be moved from place to place; and can be ballasted up or down by altering the amount of flooding in buoyancy tanks; they are generally anchored by cable anchors during drilling operations, though they can also be kept in place by dynamic positioning. Semi-submersibles can be used in depths from 600 up to 35,000 feet (180 to more than 10,600 m).
A rare shot We didnt normally come in that way, so it was a pleasure to see the ( I think) Cormorant, sorry but ...
TransOcean Prospect Being moved back into Invergordon on Saturday 23rd June 2012
Treasure Finder in Winter storm Taken the day after the iconic "Brent Charlie in Winter storm" photograph after personnel had transf...
Aseng Field, Equatorial Guinea A little while back I found this image on Offshore Technology website. Image was courtesy of PA Re...
Sunset over Deep Water Gunashli 29/11/09 - DWG Platform Offshore Azerbaijan, Part of the ACG Complex
The Maersk Tender and the Ocean Guardian Leaving the Cromarty Firth on 12.7.12
Pentagone 84 on location North Sea 1984 Myself with the P84 that was working for Total around 1984.
Ali Baba, drydock June 1984 In drydock in Rotterdam after running aground in Peterhead, June 1984
Noble Max Smith The rig was in the Signal shipyard Pascagoula Mississippi early October 2012. Preperation for contr...
maureen topside taken approx.1981/82 from road above site leading to applecross
maureen topside taken 1981/82. topside under construction
maureen topside taken 1981/82 topside lit up at night

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