Troll A Platform, North Sea, Norway

The Troll platform was towed over 200 kilometres (120 mi) from Vats, in the northern part of Rogaland, to the Troll field, 80 kilometres (50 mi) north-west of Bergen. The tow took seven days.
Expansion
In the fall of 2010 the Troll A platform was expanded with a new module. This module contains living quarters and a new control room. The new control room and expanded facilities are needed to support the new compressors (a 3rd and 4th are planned and being installed in 2014). These compressors are needed due to the dropping reservoir pressure in the wells.