Marine decarbonization: A critical review of pathways, fuels, and challenges
海事脱炭素化：経路、燃料、課題の批判的レビュー (AI 翻訳)
Marek Dzida, Lan Huong Nguyen
🤖 gxceed AI 要約
日本語
本レビューは、海事セクターの脱炭素化に向けた国際規制、エネルギー効率技術、代替燃料（LNG、メタノール、水素、アンモニア、バイオ燃料等）の特性・課題を包括的に評価する。単一の解決策では不十分であり、運航効率改善、複数燃料の組み合わせ、デジタル技術、政策的枠組み、再生可能エネルギー投資の統合が必要と結論付ける。研究ギャップや安全面の課題も指摘し、2050年までの脱炭素達成に向けた優先事項を提示する。
English
This review comprehensively assesses maritime decarbonization pathways, including regulatory developments, energy-efficiency technologies, and alternative fuels (LNG, methanol, hydrogen, ammonia, biofuels, e-fuels). It concludes that no single solution suffices; an integrated portfolio of operational improvements, multiple fuels, digital technologies, supportive policies, and renewable energy investment is needed to achieve decarbonization by 2050. Key research gaps, safety challenges, and policy priorities are identified.
Unofficial AI-generated summary based on the public title and abstract. Not an official translation.
📝 gxceed 編集解説 — Why this matters
日本のGX文脈において
日本は国際海運大国であり、アンモニア燃料船などの開発を推進中。本レビューで示される多様な燃料・技術ポートフォリオは、日本の海事産業が今後の規制対応や投資判断を行う上で重要な全体像を提供する。
In the global GX context
The maritime sector is a focus of global climate policy (IMO targets). This review provides a structured comparison of fuel options and efficiency measures, relevant for stakeholders navigating the energy transition and regulatory landscape.
👥 読者別の含意
🔬研究者:Provides a comprehensive overview of current knowledge and identifies research gaps in marine decarbonization.
🏢実務担当者:Offers a comparative analysis of alternative fuels and efficiency technologies to inform investment and operational decisions.
🏛政策担当者:Highlights the need for integrated policy frameworks and infrastructure investments to support maritime decarbonization.
📄 Abstract（原文）
The maritime sector is responsible for nearly 3% of global CO2 emissions and remains one of the most challenging industries to decarbonize due to its dependence on fossil fuels. This review presents a comprehensive assessment of current marine decarbonization pathways by critically examining regulatory developments, energy-efficiency technologies, alternative fuels, techno-economic considerations, and future transition strategies. The review first discusses the role of international climate policies and emission reduction targets in shaping the maritime energy transition, followed by an evaluation of technical and operational efficiency measures, including hull optimization, energy-saving devices, wind-assisted propulsion, digitalization, and intelligent voyage optimization. Subsequently, the characteristics, advantages, limitations, and commercialization status of major alternative marine fuels, including liquefied natural gas, methanol, hydrogen, ammonia, biofuels, and synthetic e-fuels, are critically compared with respect to energy density, storage requirements, safety, infrastructure readiness, lifecycle greenhouse gas emissions, and scalability. Furthermore, the review examines well-to-wake sustainability, bunkering infrastructure, economic barriers, fuel availability, and renewable electricity requirements associated with large-scale fuel deployment. The analysis demonstrates that no single fuel or technology can independently achieve complete maritime decarbonization; instead, an integrated portfolio combining operational efficiency improvements, multiple alternative fuels, digital technologies, supportive regulatory frameworks, and substantial investments in renewable energy infrastructure will be required. Finally, key research gaps, safety challenges, and policy priorities are identified to support the development of resilient, economically viable, and environmentally sustainable pathways toward achieving decarbonization by 2050.
🔗 Provenance — このレコードを発見したソース
- crossref https://doi.org/10.55228/jtst.2026.154249first seen 2026-07-15 06:01:34
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