Seeing the Troll A oil rig up close is something pretty amazing. The size of it is incredible. If you have ever seen photos of its tow out from a Norwegian fjord you will understand what I mean. It is the largest structure ever to be moved by humans. Its total height is 472m, so what you see here in my pictures gives you no indication of the size of it below sea level.

MV Geofjord launching it's ROV for a pipeline survey with Troll A oil rig platform in the background
The Troll oil and gas field is about 65km west of Bergen in the northern part of the North Sea. It is one of the largest oil fields on the Norwegian continental shelf. It began production in 1996 and is operated by Statoil.
Troll B platform is a semi-submersible platform fabricated from concrete (probably the only one).

This oil rig stock photo shows the Troll B platform, a semi-submersible platform fabricated from concrete with the Troll C oil rig platform in the distance
Troll C is a conventional steel hull semi-submersible.

This stock oil rig photo of the Troll A platform was taken from the helicopter deck of the M/V Geofjord
These stock oil rig photos were taken from the M/V Geofjord, originally owned and operated by DOF Subsea. The vessel is now owned by Jas Marine in Malaysia.