LNG - Well-to-Wake by engine pathway
Three LNG pathways with dramatically different WtW intensities. Otto MS suffers from 5.5 g/kWh methane slip; Diesel cycle has almost none.
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Formula, assumptions, limits
WtW factors include upstream extraction, processing, transport, plus tank-to-wake combustion and relevant CH₄/N₂O. FuelEU Maritime Annex II publishes the authoritative defaults.
In short
Well-to-wake GHG intensity of LNG by engine pathway. Fourth IMO GHG Study methane-slip accounting.