Written at a level suitable for senior students of marine engineering and entry-level marine engineers, this book covers main propulsion machineries, auxiliaries, and all ship-board systems and equipments that come under the purview of a marine engineer. The chapters progress from working principles to construction and design features to operation and maintenance. A separate chapter covers inherent hazards in a running engine and the built-in safety features and fail-safe devices designed to combat them. Copious line drawings and composite diagrams demonstrate the concepts and intricacies of design. A special feature is the section on watch-keeping.