Conclusions

The use and production of H2 as fuel for ferries in Shetland is feasible in terms of technical aspects.

Liquid is more promising than gas with the current technology.

Financial – Competitiveness of Hydrogen solutions to decrease the cost under development.

Decarbonizing MV Hrossey has potential benefits on the environment.

LH2 space requirement would be 52% lower than gaseous and would occupy a volume smaller than the current heavy fuel oil used.

After our analysis, we conclude that decarbonizing the marine industry in Shetland islands seems feasible, in terms of technical aspects, and profitable for someone who wants to invest in future.

The table below represents the quantitative results of our study, giving the highlights of our project.

Future Work

To have a more holistic view of the project and to expand it, we give 4 suggestions for future work, regarding its implication, the mitigation of losses, life cycle assessment and public opinion and/or acceptance, i.e.:

Feasibility study for the use of Hydrogen in other Ferries of Shetland / potential use for more applications in Shetland Islands,
Investigation of a reliquefaction system in order to exploit the boil-off gas,
Life Cycle Assessment for a holistic sustainability view,
Assess the public's perception of the risks associated with hydrogen in a passenger ferry compared to other green fuels (e.g., Green Ammonia).

Presentation

The project was presented at the Sustainable Engineering Renewable Energy Masters Conference on Wednesday, 5th May 2021.

Offh2re Shetland presentation

Acknowledgments

The group would like to express deep gratitude to Dr Stephanie Eugenia Ordonez Sanchez, our project supervisor, for her patient guidance, enthusiastic encouragement, and useful feedbacks of this work. We would also like to thank Dr. Paul Gerard Tuohy and all the classmates from the Renewable Energy Group Project class, for their interesting suggestions during the whole semester, which have been crucial for the project completion.