Could alcohol keep HMS Nelson's boilers running in 1805?
Short answerAlcohol is left as a possibility, while producing enough substitute fuel remains a serious constraint.
NotesAlcohol or ethanol might provide substitute boiler fuel, although technical suitability remains unresolved. Ships consume large quantities of fuel, so production volume would also constrain the idea. The proposed approach would proceed in phases, first using whatever the existing economy could supply for Nelson and perhaps an initial generation of ships. A proper oil industry would then have to follow. Neither the substitute fuel's compatibility nor achievable production is established.