Abstract
The world's first cruise ship powered by the combined cycle of gas and steam turbines entered service in June 2000. The environmentally friendly gas turbine was chosen instead of the diesel engine. Though the use of distillate marine gas oil for the gas turbine will produce a higher operating cost, it is believed that the higher cost is offset by the significant advantages and merits of the combined cycle. The output electric power could be controlled without the degradation of the total efficiency by adapting two small gas turbines instead of a large one. The system could be preferable also in the distributed power generation systems in lands.
