In response to a change in emphasis from certification to verification of competency as per the upgraded Standards of Training Certification and Watchkeeping (STCW 95) convention, the ISM code now calls for additional reliance on simulators for maritime training. STN is complying with these demands for engine room operatives with its new Atlas SES 4000 series of engine room simulators, which are based on real-time physical mathematical modules rather than the conventional look-up tables. To train for the competence for the work out of planning schedules, entails not only complex start-up and shut-down procedures for main propulsion and auxiliary machinery - but for management of fuel, ballast, cooling and other systems as well. The simulator is an authentic reproduction of engine performance and characteristics modeled after physical processes governing fluid mechanics, hydraulics and thermodynamics.