Since 1997, five Japanese gas turbine makers have been developing a low-NOx, high-efficiency, nextgeneration, marine gas turbine (Super Marine Gas Turbine, or SMGT).

　 The target goals for this 2,500kW class marine gas turbine include NOx emissions of less than 1g/kWh, a thermal efficiency of 38 〜 40%, and the ability to use fuel oil type A. The SMGT is being developed primarily as a main engine for coastal shipping vessels.

　 The 6-year R&D plan calls for performance evaluation of a 2,500kW class prototype gas turbine in the plan's final year. At present, construction of the prototype gas turbine is underway.

　 To achieve the above goals, the following have been developed: a DLN combustor that can burn liquid fuel (fuel oil type A), a regenerative cycle using a plate-fin recuperator, a compound high-efficiency axial + radial compressor, and a high-efficiency cooled blades.

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