Doosan marine engines provide practical diesel propulsion for fishing vessels, tugboats, ferries, passenger boats, cargo craft and other commercial marine applications. The range is recognised for straightforward mechanical systems, robust construction and multiple power ratings suited to different annual operating schedules.
Among the inline engine options, the Doosan L136TI provides a compact solution for smaller commercial vessels, while the Doosan L126TI is available in heavy- and medium-duty ratings of approximately 360 and 400 PS. The specific suffix—such as H, M or L—must be checked because it identifies the engine’s intended duty classification and rated output.
Larger vessels can be matched with V-configuration models such as the Doosan V158TI, Doosan V180TI and Doosan V222TI. Depending on the model and rating, these turbocharged and intercooled Doosan marine diesel engines cover applications from working fishing boats to passenger vessels requiring substantially higher propulsion power.
Many engines previously sold under the Doosan Infracore name now sit within the HD Hyundai Infracore engine portfolio. Consequently, buyers should confirm whether a quoted unit is new production, unused old stock, used, rebuilt or remanufactured. Parts and service requests should include the complete engine model, duty suffix and serial number to avoid confusion between Daewoo Doosan marine engine generations.
A quotation should identify the exact model, horsepower, engine speed, duty rating and emissions certification. It should also state whether the marine gearbox, control panel, wiring, heat exchanger, seawater pump, exhaust components and flexible mounts are included. Warranty coverage, availability of Doosan marine engine parts, testing documentation, lead time, packing and delivery terms should be confirmed in writing.
