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).
GSF Arctic II.
Anchored in Cromarty Firth, 13/02/09 and still remains there at present.
Again prior to entering Queens Dock, Oct 2009. This rig has featured on National and International n...
Queen's Dock, Invergordon.
23rd February 2010.
The Scarabeo 9 on March 10 2010 under construction at the Yantai Raffles Shipyard, China.
Transocean John Shaw anchor winch fire in Queen's dock Invergordon - April 2010
Jim Cunningham about to leave Angola on the 09/04/10 for a 7298 mile tow to Port Dickson, Malaysia. ...