Aiming at the selection research gap of AG600 amphibious aircraft for salvage of life at sea, the selection index system of AG600 has been established, and an interval intuitionistic fuzzy selection decision model based on fuzzy entropy and score function is constructed. An evaluation index system with 8 indexes was determined based on the rules of the applicability, safety, and accessibility by questionnaire and statistical analysis. Different from the traditional method of determining the fuzzy number of each index solely by experts’ scoring, this paper establishes a 5-grade fuzzy evaluation grade and index membership function, and the interval intuitionistic fuzzy number of the index is determined by combining subjective and objective methods. Fuzzy entropy and score function are used to calculate the weights of each index and AG600 selection score for different accidents, so as to obtain the matching degree of AG600 selection in marine life accidents more scientifically and reasonably. Finally, the effectiveness of the proposed model is demonstrated by a practical case.

This work proposes a method that quickly selects suitable rescue resources to participate in rescue activities under limited professional rescue equipment in the South China Sea. Specifically, the developed scheme relies on the analytic hierarchy process to establish a rescue equipment selection model and determine the weight coefficient of the index, which is further modified utilizing an entropy weight coefficient method. The importance of each index for the rescue equipment selection process is obtained by comparing the size of the combined weight value. Then, the analytic hierarchy process and the weighted scoring decision method are used to optimize the rescue equipment and compare the sorting results. The sorting results are verified through actual South China Sea rescue cases, revealing that the ranking results are consistent with the actual dispatch plan and demonstrating that the proposed method is scientific and feasible for selecting marine salvage equipment.

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