General discerption of Marine diesel engines. Principles of 2- and 4-stroke diesel engines. Scavenge of marine diesel engines. Requirements for marine diesel engines. Engine structure: Cylinders, cylinder heads and combustion chambers. Valves. Pistons and piston rings. Crankshafts. Flywheels. Vibration dampers. Marine fuel types properties. Injection pumps and injectors for marine diesel engines. Timing diagrams. Indicator diagrams. Power calculations. Slow speed marine diesel engines