<正>This paper describes an example of application of new simulation techniques in computer-based prograrnmes-CBT for marine engineering students. The paper presents an interactive program related to the fuel oil separator installation where trainees have the possibility to familiarise themselves with the system and to develop operational skills. In this programme various multimedia techniques of simulation have been applied, including tri-dimensional presentation, sound application, diagrams, pictures etc.. In this application of new simulation techniques the relation between simulation and realism of machinery operation has been specially emphasised. The experiences in application, the benefits and advantages of the use of interactive programs in the educational process of engine room officers are equally presented in this paper.