2026-10-14T04:40:44Z https://api.figshare.com/v2/oai

oai:figshare.com:article/33961642 2026-09-22T04:22:25Z category_62 portal_316 item_type_3 month_year_09_2026

Data Sheet 1_Maritime search and rescue resource location–allocation–scheduling under uncertain demand and time-varying locations.pdf Yaxin Dong (14081704) Hongxiang Ren (9512702) Rui Tao (329797) Xiao Yang (19898) Yuefang Li (1930855) Marine Biology adaptive large neighborhood search location-allocation-scheduling maritime emergency time-varying uncertainty <p>Minimizing casualties and property losses from maritime emergencies requires a timely and reliable search and rescue (SAR) logistics network. Unlike conventional emergency logistics, maritime incidents are not only stochastic but also involve demand locations that evolve over time under ocean environmental influences. To address these characteristics, we develop a two-stage dynamic location–allocation–scheduling (2S-DLAS) model for maritime SAR operations under uncertain demand and time-varying demand locations. The model minimizes total rescue cost by jointly optimizing rescue base locations, the allocation of multiple SAR resource types, and the coordinated routing and task assignment of SAR platforms. It explicitly captures the dynamic coupling between travel time and ocean conditions and incorporates navigational restrictions into accessibility constraints. To solve the model, we use a Sample Average Approximation (SAA) framework and design an Improved Adaptive Large Neighborhood Search (IALNS) algorithm that integrates cross-stage nested neighborhoods to improve solution quality and computational efficiency. Numerical experiments based on real SAR cases from the South China Sea demonstrate the effectiveness of the proposed model and algorithm. Sensitivity analysis further provides managerial insights on strategic SAR deployment and multi-platform coordination, supporting evidence-based planning in maritime emergency response systems.</p> 2026-09-22T04:22:25Z Dataset Dataset 10.3389/fmars.2026.1871142.s001 https://figshare.com/articles/dataset/Data_Sheet_1_Maritime_search_and_rescue_resource_location_allocation_scheduling_under_uncertain_demand_and_time-varying_locations_pdf/33961642 CC BY 4.0