Context and Purpose Led by BLUMORPHO with the support of AIVP (Association Internationale des Villes Portuaires) and the Prince Albert II Foundation, the initiative “Financing Maritime Innovation and Infrastructure for Climate and Ocean” brings together stakeholders from urban-port ecosystems, innovative companies, corporates, and financial institutions. Its core objective is to foster collaboration in designing and implementing tailored financing mechanisms that meet the complex needs of each stakeholder, with the ambition to accelerate the ecological and societal transition of port cities. 1. Port Cities as Orchestrators of the Transition From our ongoing discussions with port city stakeholders, it is clear that their ambitions go well beyond maritime decarbonization and energy generation. Port cities are no longer merely transit points, they are becoming strategic platforms for the post-fossil industrial transition. Through the development of industrial parks and the structuring of resilient, circular value chains, including carbon capture, alternative fuels, and ship refit, they are maximizing their impact on the energy and ecological transition. This transformation is not purely environmental; it also addresses societal challenges such as inclusion, safety, employment, and public health. In this respect, port cities are emerging as central actors in both…