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).
Port side crane
The deck crew playing their favorite game deck chess. Portland, Victoria February 2012
Short stop in Darwin harbour before its towed to Papua New Guinea. 2013
The SEDCO 714 at the entrance to the Cromarty Firth on 14.7.15 with the OLYMPIC POSEIDON on the tow ...
Ninian Central taken from Maersk Forwarder August 2015
Ninian Southern taken from Maersk Forwarder August 2015
Tiffiny Platform with 2 Sub Sea ships. Picture taken August 2015
Maersk Forwarder alongside Tiffany August 2015.
Tiffany Platform taken from Maersk Forwarder September 2015
Ninian Central September 2015.
Tiffany in the fog,taken from Maersk Forwarder August 2015