Jeong-Seok Lee is a Senior Researcher at the Marine Big Data and AI Center, Korea Institute of Ocean Science and Technology (KIOST), Republic of Korea. He received his B.S. in Nautical Science and his M.S. and Ph.D. degrees (2023) from National Korea Maritime & Ocean University. Before graduate school, he served as a third and second officer on bulk carriers, product tankers, and crude oil tankers with SK Shipping (2014–2017), and he holds a deck officer license. His research focuses on maritime big data, particularly AIS and V-Pass data, combined with spatial analysis, GIS, and artificial intelligence. His topics include maritime traffic networks and route width estimation, ship behavior under extreme weather, fishing vessel activity analysis, ship emission estimation, and AI-based marine object detection. He has published in journals such as Ocean Engineering, the Journal of Marine Science and Engineering, and IEEE Access. His work has also produced several patents, registered software, and technology transfers to industry.