Mitsubishi Heavy Industries Compressor Corporation (MCO) has until now mostly worked in the field of petroleum chemistry such as ethylene plant. We are now aggressively expanding our business into resources and energy market, such as the LNG plant and Floating Production, Storage and Offloading (FPSO), and have completed the technical development of compressors for LNG plants and injection compressors for FPSO. At the world's first Floating LNG plant, our steam turbines are being used for the compressor and generator drive. We have studied the technological subjects to apply our steam turbines for them, and in this report we would like to explain their development.