Mochamad Firmawan, Nyoman Ardiana Listriawati and Ari Sriantini (2025) “The Impact of Environmentally Friendly Technology and Renewable Energy on the Operational Efficiency of Merchant Vessels at TUKS PT. Petrokimia Gresik”, Jurnal Info Sains : Informatika dan Sains, 15(01), pp. 164–170. Available at: https://ejournal.seaninstitute.or.id/index.php/InfoSains/article/view/7106 (Accessed: 17 July 2026).