Research on Man-Machine Safety of Officer of the Watch Fatigue Based on Fuzzy Mathematics and Safety Ergonomics

The root cause of all watercraft accidents is often caused by “human” fatigue. However, officer of the watch (OOW) fatigue is affected by many factors such as navigation aid signs, water environment, ship equipment and the quality of the OOW, and its causes are complex. This paper studies the principles of fuzzy mathematics and safety ergonomics and summarizes the many factors that cause OOW fatigue in the human-ship-environment system and their interrelationships. This paper analyzes the process of driving fatigue by analogy with the traditional process of driving fatigue, sums up the process of ship driving fatigue, and proposes a fuzzy mathematical model for evaluating ship driving fatigue. Based on the theory of the S-O- R model, this paper establishes the behavioral model of OOW fatigue driving and discusses its internal mechanism. It can be seen that reasonable management of officer of the watch fatigue is of great significance for the safe management of ships.