Turret transfer system is designed to manage the production and service lines which pass through the central moonpool of the hull as it pivots around its central mooring point. Depending on wind and sea currents, FPSO is able to turn through 270deg. The turret forms a non-rotating platform for the mooring system.
At the heart of the system there is a specially developed, side-running drag chain which is capable of managing all the lines: for water injection, well testing and service, gas injection, in addition to those for electro-hydraulic supply under the sea, and air supply. The chain is mounted on the top of the turret and allows for continuous production as the vessel revolves around the turret. It also controls electrical power, signal and control cables.