Performance Determinants and Improvement Paths for Sustainable Marine Emergency Interconnection Under Persistent Public-Health Stress

Marine emergency interconnection coordinates information, resources and decisions across organizations to meet shared emergency tasks. This study evaluates its sustainable performance determinants under persistent public-health stress using a 13-criterion demand–supply–environment (D–S–E) Framework. Judgments from 18 experts for the Yiwu Inland Port–Ningbo-Zhoushan Port corridor are represented by Z-numbers, which pair assessed influence with stated judgment reliability. Consensus–experience aggregation combines the expert inputs, and the Best–Worst Method (BWM) and Criteria Importance Through Intercriteria Correlation (CRITIC) determine integrated criterion weights. Bootstrap-supported interpretive structural modelling (ISM) retains directional links; depth-first search (DFS) enumerates paths from the highest-weight structural root and ranks those covering all three domains. Connectivity dependence, task scale and plan alignment receive the highest integrated weights. The leading path is C1-3 (connectivity dependence) → C1-1 (task scale) → C3-1 (information-sharing barriers) → C2-3 (dispatch constraints). Each step follows a retained expert-assessed influence link; this sequence suggests mapping dependencies, prioritizing tasks, improving shared information and coordinating dispatch. The path ranks first in 18 feasible threshold scenarios; nine stricter scenarios admit no eligible path from the selected root. The result is an expert-informed candidate coordination sequence whose operational effects require validation.