Abstract: The walking speed of damage control operators in complex ship disaster scenarios is the key basis for the evaluation and optimization of damage control operation process. In this study, the effects of ship rolling, visibility reduced and hull tilt caused by specific disaster environment, fatigue of carrying equipment, typical path structure and other factors on the walking speed of damage control operators were comprehensively considered. Literature research and data fitting methods were used to build walking speed attenuation model under the influence of single factor. Based on the similarity analysis between firefighters and damage control operators,comprehensive quality of firefighters was measured to obtain the basic speed of damage control operators and the correction coefficient of the difference between damage control operators and ordinary people, a walking speed model under the influence of fatigue was also constructed. Based on the measurement of typical ship path structure, a calculation method for the walking speed of straight ladder, hatch door and hatch cover is established. Based on the characteristics and patterns of walking speed under the influence of the above different factors, the walking speed model of damage control operators under the influence of multi-factor coupling is developed. The research results can provide theoretical basis and practical guidance for the study of ship damage control process evaluation and optimization.

Key words: ship, damage control operation, walking speed, multi-factors coupling