The Wartsila 50DF is a large, four-stroke, medium-speed dual-fuel engine designed for high-output marine propulsion and power generation, particularly suited for LNG carriers and power barges. It operates flexibly on natural gas (LNG), marine diesel oil (MDO), and heavy fuel oil (HFO), enabling seamless fuel switching under load. Available in V-type (12V, 16V, 18V, 20V) and in-line (6L, 8L, 9L) configurations, the engine delivers between 5,700 and 17,500 kW at 500 or 514 rpm. The Wartsila 50DF meets IMO Tier II on liquid fuels and achieves IMO Tier III in gas mode without SCR, making it a prime engine for large vessels operating in Emission Control Areas (ECAs).

ENGINE SPECIFICATIONS

POWER   MAXIMUM TORQUE   Certification  

17,500KW   334,000Nm @ 500 RPM   IMO Tier III (with gas)                                 

NEW GENUINE / REMAN

The Wartsila 25DF is a compact, next-generation, four-stroke dual-fuel marine engine designed for future-ready, low-emission marine operations. Introduced in 2023, it supports operation on LNG (natural gas) and marine diesel oil (MDO), with a modular design optimized for hybrid propulsion, fuel flexibility, and digital connectivity. The engine is available in 6L, 8L, and 9L in-line configurations, delivering power from 2,400 to 3,400 kW at 1,000–1,200 rpm. The Wartsila 25DF complies with IMO Tier III emission standards in gas mode without SCR, and is future-upgradable for carbon-neutral fuels like methanol, making it ideal for sustainable ship operations.

ENGINE SPECIFICATIONS

POWER   MAXIMUM TORQUE   Certification  

3,400KW   27,100Nm @ 1200 RPM   IMO Tier III (with gas)                                 

NEW GENUINE / REMAN