The present invention generally relates to the computer-assisted design ofomplex systems and, more particularly, to the design and analysis of waterborne vessels, especially with respect to specific fuel consumption performance of the vessel engines. The invention is a power plant (e.g., propulsion engines...http://www.google.de/patents/US5557556?utm_source=gb-gplus-sharePatent US5557556 - Power plant simulation for waterborne vessel computer-assisted design and evaluation