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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).
Deepsea Atlantic - Odfjell Under construction at DSME in South Korea, 2009
Borgsten Dolphin In the Queens Dock at Invergordon 20.1.11
Borgholm Dolphin With the Tug UOS Endeavour in the Cromarty Firth 23.1.11
Deepsea Bergen Picture taken January 2011 from the Maersk Logger.
Sovereign Explorer - Drilling platform The drilling platform, Sovereign Explorer, at Coast center Base, Aagotnes, June, 25.1992
BORGLAND DOLPHIN - Drilling rig The drilling rig, BORGLAND DOLPHIN, at Coast Center Base, Aagotnes, December, 5.2009
Sedco 712 In the Cromarty Firth 9.2.11
Rig West Aquarius Sulu Sea Philippines I was onboard West Aquarius during Drilling in South Sulu Sea Philippines. Im the Agent onboard my c...
Rig West Aquarius South Sulu Sea Philippines Travia Helicopter on standby/waiting during VIP Flights onboard West Rig Aquarius in South Sulu Sea ...
LB 200 Layed up at Malaga Spain. At Malaga Harbour Photo taken 09/07/2003.
Deepwater Nautilus Being transported by the Black Marlin.

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