Yalçın, Galip CihanKara, KarahanÖzekenci, Emre KadirSimic, VladimirPamuçar, Dragan2026-03-112026-03-112025Yalçın, G. C., Kara, K., Özekenci, E. K., Simic, V., & Pamucar, D. (2025). Green maritime transport performance analysis of G-7 countries using an interval-valued Fermatean fuzzy ARLON-based decision model. Applied Soft Computing, 113677.1568-4946http://dx.doi.org/10.1016/j.asoc.2025.113677https://hdl.handle.net/20.500.12507/3522Maritime transport operations are witnessing heightened environmental sensitivities, prompting the implementation of environmentally focused maritime transport practices. The principal aim is to develop a decision support system for evaluating countries' green maritime transport performance. To this end, the interval-valued Fermatean fuzzy (IVFF)-simple weight calculation (SIWEC)-skewness impact through distributional evaluation (SITDE)-alternative ranking using two-step logarithmic normalization (ARLON) model is developed within this study. This method enables the analysis of countries' green maritime transport performance by integrating expert opinions with environmental and maritime transport parameters. The model determines the influence of experts using IVFF sets. It further facilitates the simultaneous use of subjective and objective criteria weighting approaches to compute the weights of green maritime transport performance criteria. ARLON is employed to assess and rank countries' green maritime transport performance levels. The applicability of the IVFF-SIWEC-SITDEARLON model is tested through a case study focusing on G-7 countries, and the results supported the successful implementation of the method. Furthermore, sensitivity and comparative analyses demonstrated the consistency and robustness of the model. According to the findings of the case study, the United States emerges as the country with the highest green maritime transport performance among the G-7 countries. The "linear shipping connectivity index" is identified as the most influential criterion in the decision-making process. The study offers actionable recommendations for the maritime industry, thereby contributing to the advancement of green maritime transport practices.eninfo:eu-repo/semantics/openAccessEFFICIENCYArticle184A00157889910000110.1016/j.asoc.2025.113677Q1