000010676 001__ 10676 000010676 005__ 20240531171550.0 000010676 0247_ $$2doi$$a10.24868/10676 000010676 037__ $$aGENERAL 000010676 245__ $$aConsiderations For Future Fuels in Naval Vessels 000010676 269__ $$a2022-09-12 000010676 336__ $$aConference Proceedings 000010676 520__ $$aEmissions regulations aimed at reducing carbon dioxide and other emissions are driving commercial research into alternative fuels. Being government owned, naval vessels are exempt from these regulations, but not auxiliary vessels including the RFA and patrol boats. Some governments have committed to meeting regulations where possible and public or even legal pressure may strengthen a requirement for operation on low-or zero emissions fuels in future, even if only in peacetime. These new fuels present major challenges for naval use, such as lower energy density, increased toxicity, increased flammability and explosion risk, which has implications on storage and use. This paper summarises ongoing work using the ZEOLIT tool, previously presented at INEC 2018, to assess the overall ship impacts of adopting alternative fuels over a range of warship sizes, rather than single exemplar designs. Application of methanol and ammonia to a generic frigate design has been found to lead to increases in size that do not seem excessive, and that more efficient but expensive machinery (fuel cells) is desirable as reductions in displacement are significant compared to increases in cost. 000010676 542__ $$fCC-BY 000010676 6531_ $$aFuels 000010676 6531_ $$aFuel Cells 000010676 6531_ $$aDesign Methods 000010676 6531_ $$aMethanol 000010676 7001_ $$aPawling, R$$uUCL 000010676 7001_ $$aBucknall, R$$uUCL 000010676 7001_ $$aGreig, A$$uUCL 000010676 773__ $$tConference Proceedings of INEC 000010676 773__ $$jINEC 2022 000010676 85641 $$uhttps://www.imarest.org/events/category/categories/imarest-event/international-naval-engineering-conference-and-exhibition-2022$$yConference website 000010676 8564_ $$96fe36e15-1498-4ab4-a60f-3659e6bc6b6d$$s1878932$$uhttps://library.imarest.org/record/10676/files/INEC_2022_paper_62.pdf 000010676 980__ $$aConference Proceedings