ZICHAI 6N330 Series marine diesel engine is a 6-cylinder, four-stroke, direct-injection medium-speed diesel engine designed for marine main propulsion applications. With a 330 mm cylinder bore and 440 mm piston stroke, the 6N330 series covers a rated power range of 2207-2574 kW (3000-3500 PS) at 620 r/min. Featuring turbocharging and intercooling, the engine provides reliable performance for cargo vessels, engineering vessels, tugboats and other commercial vessels. Different 6N330 engine models are available with various power ratings to match vessel design, marine gearbox and propulsion system requirements.