Wärtsilä marine engines represent one of the most advanced and versatile engine portfolios in the global maritime industry. Covering diesel, dual‑fuel, and pure‑gas configurations, these engines deliver high efficiency, strong power density, and reliable continuous‑duty performance across a wide range of vessel types and operating profiles.
The Wärtsilä marine engine portfolio is among the most widely used propulsion and power‑generation solutions in global shipping. This overview page serves as a central hub for all Wärtsilä engine models, including performance ranges, technical specifications, emission standards, and configuration options. From compact auxiliary units to high‑output main propulsion engines, Wärtsilä covers the full spectrum of modern medium‑speed marine engines.
Key Advantages of Wärtsilä Marine Engines
- High efficiency through optimized combustion and advanced injection systems
- Proven medium‑speed technology for stable and reliable performance
- Flexible fuel options including diesel, gas, and dual‑fuel
- IMO‑compliant emission levels (Tier II / Tier III)
- Modular design suitable for both newbuilds and retrofits
- Global service network ensuring maximum uptime
Wärtsilä Marine Engine Portfolio
Below is an overview of the Wärtsilä engines you currently have published. The structure is designed so you can easily expand it as you add more models.
Wärtsilä 20
- Compact and efficient engine for auxiliary applications and smaller propulsion systems.
- Power range: 800–1,800 kW
- Applications: Gensets, small vessels
- Wärtsilä 20 Engine Page
Wärtsilä 26
- A proven engine for medium‑range propulsion and generator applications.
- Power range: 1,800–3,000 kW
- Wärtsilä 26 Engine Page
Wärtsilä 32
- One of the most widely used medium‑speed engines worldwide.
- Power range: 3,000–6,000 kW
- Variants: Diesel & Dual‑Fuel
- Wärtsilä 32 Engine Page
Wärtsilä 34
- High‑efficiency engine with excellent power density.
- Power range: 3,000–7,000 kW
- Variants: Diesel & 34DF
- Wärtsilä 34 Engine Page
Wärtsilä 38
- Robust high‑output engine for demanding applications.
- Power range: 5,000–10,000 kW
- Variants: Diesel & 38DF
- Wärtsilä 38 Engine Page
Wärtsilä 46
- Large medium‑speed engine for heavy main propulsion.
- Power range: 7,000–15,000 kW
- Wärtsilä 46 Engine Page
Comparison of Key Wärtsilä Engines
| Engine Model | Power Range | Fuel Type | Typical Applications |
|---|---|---|---|
| Wärtsilä 20 | Low | Diesel | Gensets, small vessels |
| Wärtsilä 26 | Low–Medium | Diesel | Propulsion & gensets |
| Wärtsilä 32 | Medium | Diesel / DF | Cargo vessels, offshore |
| Wärtsilä 34 | Medium–High | Diesel / DF | Propulsion & auxiliary power |
| Wärtsilä 38 | High | Diesel / DF | Tankers, Ro‑Ro, offshore |
| Wärtsilä 46 | Very High | Diesel / DF | Large vessels, heavy propulsion |
Application Areas
- Main propulsion systems for cargo vessels, tankers, offshore ships
- Auxiliary power generation for onboard electrical systems
- Dual‑fuel solutions for low‑emission marine propulsion
- Retrofit projects for fleet modernization
Comparison Pages
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