This book examines how seaports, once emblematic drivers of globalization and growth, are being transformed by a convergence of geopolitical, environmental and societal crises. Rather than analysing each disruption separately, it adopts the lens of polycrisis, highlighting the interconnections between supply chain fragility, climate transition, shifting economic models, and social tensions.

Contributors from geography, law and management provide a multidisciplinary overview of port mutations, focusing on geopolitical reconfigurations, ecological constraints and institutional change. The book explores issues such as reshoring and national security, the decline of fossil-fuel-based port economies, conflicts over land use and infrastructure, climate resilience, and the redefinition of port–city relations. By offering an integrated understanding of current transitions, the book provides readers with analytical tools to grasp how crises reinforce each other and reshape ports’ functions, governance and spatial dynamics. It invites new ways of thinking about ports not only as infrastructures of exchange, but as strategic, political and ecological actors in a world of accelerating change.

The primary readership includes academics and researchers in transport geography, port studies, maritime economics, political geography, environmental policy and public law. It will also interest professionals in port authorities, logistics, maritime industries, and policymakers involved in transport, territorial planning and the green transition.