A Passenger Ship Emergency Evacuation Line Efficiency Evaluation Operator Considering Safety Capacity and its Application

Introduction: Aiming at evaluating the efficiency of passenger ship emergency evacuation routes, this study proposes an evaluation operator for passenger ship emergency evacuation routes, and then conducts simulation research on the passenger ship evacuation process. Methods: The main innovations of this study are as follows. Firstly, this study proposes an evaluation operator for passenger ship emergency evacuation lines based on consideration of the passage capacity, ship heeling effect, traffic flow obstruction, personnel evacuation mood, accident location, and other factors. Secondly, this study discretizes the emergency evacuation path of passenger ships into a three-dimensional topological network structure and uses simulation data to calculate the traffic capacity between nodes. By comparing the calculated value with the simulated value, a risk assessment method for emergency evacuation is given. Thirdly, this study takes the three-story ro-ro passenger ship in the European "SAFEGUARD" project as an example and gives three passenger ship evacuation simulation processes under different passenger flow densities. Results: The results of the calculation example show that the risk-prone areas are mainly concentrated in the passenger ship stairs, and the risk value increases with the passenger flow. Conclusion: The calculation results verify the effectiveness of the emergency evacuation line efficiency evaluation operator proposed in this study.