Aimed at boat owners, rather than at experienced mechanics, this book explains, based on the RYA's one day Diesel Engine Course, how a diesel engine works, and how to look after it. It explains how the engine uses simple processes to convert fuel to power, and then looks at the various sub-systems that allow those processes to take place: the fuel system, the air system, the cooling system, the oil system, the electrical system, the transmission and control systems. The book concludes with a look at tools, hints and tips, maintenance schedules and fault-finding.