Decarbonization pathways for shipping – The case of alternative fuels

Master Thesis
Author
Rintaris, Evangelos
Ρινταρής, Ευάγγελος
Date
2026-02View/ Open
Keywords
Decarbonization ; Alternative fuels ; Shipping industry ; IMO 2023 GHG strategy ; Sustainable maritime transport ; Carbon neutrality ; Green shippingAbstract
This thesis, titled "Decarbonization pathways for shipping – The case of alternative fuels," examines
the maritime industry's transition toward carbon neutrality in response to escalating environmental concerns
and stringent International Maritime Organization (IMO) targets. The research critically evaluates
a diverse range of alternative fuels—including LNG, biofuels, ammonia, hydrogen, methanol, and nuclear
power—analyzing their technical feasibility, economic viability, and environmental impact. By
investigating the interplay between these fuels and existing vessel technologies, infrastructure, and regulatory
frameworks like the EU's "Fit for 55" and the IMO's 2023 GHG Strategy, the study identifies
key barriers such as high capital costs and limited bunkering infrastructure. Findings from a survey of
37 maritime professionals highlight industry perspectives on decarbonization feasibility. Ultimately,
the thesis proposes policy recommendations to accelerate the adoption of zero-emission technologies
and facilitate a sustainable future for global shipping.


