Abstract: This research establishes an extensive set of algorithms for the precise evaluation of fuel consumption across a range of engine types and systems onboard LNG carriers (LNGCs). The principal objective of this research is the development of a modern, universally applicable, and refned methodology tailored to LNGCs. This methodology encompasses the comprehensive calculation of both fuel consumption and atmospheric emissions, accommodating the variability in engine confgurations. Furthermore, the integration of empirical data derived from 73 operational LNGCs yields a meticulously crafted operational profle. This consequential outcome of our study carries signifcant implications for addressing forthcoming modeling complexities specifc to LNGCs.

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