One of the 27 MW steam turbine driven generator sets delivered to Fred. Olsen Production. Fred. Olsen Production ASA has chosen UK engineering company Peter Brotherhood Ltd to supply two condensing steam turbine driven generator sets for the Knock Allan FPSO (floating production, storage and offloading) vessel for the Olowi field off the coast of Gabon. The turbines are the world's most powerful to be installed on an FPSO vessel. Each of the two 27 MW sets consists of a turbine, gearbox and generator, all mounted on a common bedplate which incorporates the oil system.