Do not simply buy the cheapest option or the first title an algorithm suggests. Assess your rank. Identify your weakness—is it electrics? Is it thermodynamics?—and buy the volume that defeats that weakness.
Often overlooked in favor of main engine texts, McGeorge’s book is the definitive guide to everything else in the engine room. Distillers, oily water separators, air compressors, and purifiers. marine engineering book