The Wärtsilä 31DF engine is a next‑generation dual‑fuel marine engine designed to deliver exceptional efficiency, ultra‑low emissions, and reliable performance for a wide range of vessel types. With seamless operation on LNG, MDO, or HFO, the Wärtsilä 31DF offers outstanding fuel flexibility while meeting the most demanding global emission standards. Its class‑leading thermal efficiency, advanced automation, and modular design make it one of the most efficient and future‑ready medium‑speed engines in the marine industry.
Learn more on the official Wärtsilä website