Hydrogen-powered vessels in green maritime decarbonization: policy drivers, technological frontiers and challenges

The global shipping industry is transitioning toward decarbonization, with hydrogen-powered vessels emerging as a key solution to meet international emission reduction targets, particularly the IMO’s goal of reducing emissions by 50% by 2050. As a zero-emission fuel, hydrogen aligns with internation...

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Main Authors: Zhibing Zhou, Jin Tao
Format: Article
Language:English
Published: Frontiers Media S.A. 2025-05-01
Series:Frontiers in Marine Science
Subjects:
Online Access:https://www.frontiersin.org/articles/10.3389/fmars.2025.1601617/full
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author Zhibing Zhou
Jin Tao
author_facet Zhibing Zhou
Jin Tao
author_sort Zhibing Zhou
collection DOAJ
description The global shipping industry is transitioning toward decarbonization, with hydrogen-powered vessels emerging as a key solution to meet international emission reduction targets, particularly the IMO’s goal of reducing emissions by 50% by 2050. As a zero-emission fuel, hydrogen aligns with international regulations such as the IMO’s greenhouse gas reduction strategy, the MARPOL Convention, and regional policies like the EU’s Emissions Trading System. Despite regulatory support and advancements in hydrogen fuel cell technology, challenges remain in hydrogen storage, fuel cell integration, and operational safety. Currently, high-pressure gaseous hydrogen storage is the most viable option, but its spatial and safety limitations must be addressed. Alternative storage methods, including cryogenic liquid hydrogen, organic liquid hydrogen carriers, and metal hydride storage, hold potential for application but still face technical and integration barriers. Overcoming these challenges requires continued innovation in vessel design, fuel cell technology, and storage systems, supported by comprehensive safety standards and regulations. The successful commercialization of hydrogen-powered vessels will be instrumental in decarbonizing global shipping and achieving climate goals.
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spelling doaj-art-b6d6556600da4f4fb3c0d1e3f21d4eb62025-08-20T02:57:41ZengFrontiers Media S.A.Frontiers in Marine Science2296-77452025-05-011210.3389/fmars.2025.16016171601617Hydrogen-powered vessels in green maritime decarbonization: policy drivers, technological frontiers and challengesZhibing ZhouJin TaoThe global shipping industry is transitioning toward decarbonization, with hydrogen-powered vessels emerging as a key solution to meet international emission reduction targets, particularly the IMO’s goal of reducing emissions by 50% by 2050. As a zero-emission fuel, hydrogen aligns with international regulations such as the IMO’s greenhouse gas reduction strategy, the MARPOL Convention, and regional policies like the EU’s Emissions Trading System. Despite regulatory support and advancements in hydrogen fuel cell technology, challenges remain in hydrogen storage, fuel cell integration, and operational safety. Currently, high-pressure gaseous hydrogen storage is the most viable option, but its spatial and safety limitations must be addressed. Alternative storage methods, including cryogenic liquid hydrogen, organic liquid hydrogen carriers, and metal hydride storage, hold potential for application but still face technical and integration barriers. Overcoming these challenges requires continued innovation in vessel design, fuel cell technology, and storage systems, supported by comprehensive safety standards and regulations. The successful commercialization of hydrogen-powered vessels will be instrumental in decarbonizing global shipping and achieving climate goals.https://www.frontiersin.org/articles/10.3389/fmars.2025.1601617/fullhydrogen-powered vesselsregulationfuel cell technologyhydrogen storagemaritime decarbonization
spellingShingle Zhibing Zhou
Jin Tao
Hydrogen-powered vessels in green maritime decarbonization: policy drivers, technological frontiers and challenges
Frontiers in Marine Science
hydrogen-powered vessels
regulation
fuel cell technology
hydrogen storage
maritime decarbonization
title Hydrogen-powered vessels in green maritime decarbonization: policy drivers, technological frontiers and challenges
title_full Hydrogen-powered vessels in green maritime decarbonization: policy drivers, technological frontiers and challenges
title_fullStr Hydrogen-powered vessels in green maritime decarbonization: policy drivers, technological frontiers and challenges
title_full_unstemmed Hydrogen-powered vessels in green maritime decarbonization: policy drivers, technological frontiers and challenges
title_short Hydrogen-powered vessels in green maritime decarbonization: policy drivers, technological frontiers and challenges
title_sort hydrogen powered vessels in green maritime decarbonization policy drivers technological frontiers and challenges
topic hydrogen-powered vessels
regulation
fuel cell technology
hydrogen storage
maritime decarbonization
url https://www.frontiersin.org/articles/10.3389/fmars.2025.1601617/full
work_keys_str_mv AT zhibingzhou hydrogenpoweredvesselsingreenmaritimedecarbonizationpolicydriverstechnologicalfrontiersandchallenges
AT jintao hydrogenpoweredvesselsingreenmaritimedecarbonizationpolicydriverstechnologicalfrontiersandchallenges