Vetus M4.56 Marine Diesel Engine with Sail Drive – 52 HP | Efficient, Reliable & Smooth Sailing Performance
The Vetus M4.56 Marine Diesel Engine with Sail Drive (52 HP) delivers exceptional power, efficiency, and comfort for sailboats, offshore cruisers, and light commercial craft.
As part of the renowned Vetus M-Line series, this engine combines four-cylinder reliability, quiet operation, and fuel-saving performance with the advanced SP60 or SD10 Sail Drive system — offering optimized propulsion and outstanding maneuverability on the water.
Engineered for smooth cruising and simple maintenance, the M4.56 Sail Drive model is ideal for sailors seeking dependable propulsion, long service life, and low operating costs under all marine conditions.
Sail Drive Technology for Superior Performance
The Vetus Sail Drive system delivers direct, efficient thrust with minimal drag and vibration.
By integrating propulsion and transmission in a single compact unit, it ensures quiet operation, increased fuel economy, and enhanced handling, making docking, reversing, and tight-space navigation effortless.
The result? A smoother, more enjoyable sailing experience with reduced mechanical complexity and maintenance.
Key Features & Benefits
Optimized for Sail Drive Applications
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Fully compatible with Vetus SP60 or SD10 Sail Drive units.
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Offers vibration-free propulsion and improved maneuverability.
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Reduces drag, boosting sailing efficiency and fuel economy.
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Ideal for monohulls and catamarans requiring precision control.
Powerful & Fuel-Efficient Performance
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Produces 52 HP (38 kW) at 3000 RPM, ensuring steady cruising power.
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Four-cylinder configuration delivers balanced torque and acceleration.
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Low fuel consumption (244 g/kW·h) for cost-effective operation.
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Self-bleeding fuel system guarantees easy restarts after maintenance.
Low Noise & Cool Running
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Indirect cooling system (keel cooling optional) for stable temperatures.
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Water-cooled aluminum top cover lowers engine temperature by ≈ 15 °C.
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Enhanced intake filter reduces induction noise by ≈ 5 dB(A).
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Exceptionally quiet operation, ideal for long passages.
Reliable and Low-Maintenance Design
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Marine-grade construction resists corrosion and harsh conditions.
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Front-mounted service points simplify oil, filter, and impeller access.
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Fewer hose connections minimize leaks and maintenance needs.
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Optional second alternator for powering additional onboard systems.
High Electrical Output for Marine Use
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Standard 12 V / 110 A alternator ensures rapid battery charging.
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Optional dual-alternator configuration supports house & engine batteries.
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Fully compliant with the EC Machinery Directive for marine safety.
Technical Specifications
| Specification | Details |
|---|---|
| Max Output (Flywheel) | 38 kW (52 HP) |
| Max Output (Prop Shaft) | 37.1 kW (51 HP) |
| Number of Cylinders | 4 |
| Bore × Stroke (mm) | 78 × 92 |
| Displacement | 1758 cm³ |
| Alternator | 12 V – 110 A |
| Cooling System | Indirect (Keel Cooling Optional) |
| Sail Drive Options | SP60 (2.15 / 2.38 : 1) – SD10 (2.23 / 2.49) |
| Optional Engine Bed | GRP Bed for SP60 / SD10 |
| Max Installation Angle (Backwards) | 15° |
| Max Continuous Lateral Inclination | 25° |
| Max Lateral Inclination (5 min) | 30° |
| Fuel Lift Pump Suction Height | 1.5 m |
| Dry Weight | 199 kg |
| Warnings & Alarms for | Oil Pressure, Coolant & Exhaust Temp, Charging Current |
| Control Light for | Pre-Heating |
| Calorifier Connection Kit | Optional |
| Certifications | EU-RCD II, SOLAS |
Why Choose JB Marine GmbH for Your Vetus M4.56 Sail Drive Engine
At JB Marine GmbH, we specialize in genuine Vetus marine diesel engines and complete sail drive solutions — providing our clients with manufacturer-backed warranties, expert guidance, and worldwide delivery.
Our technical team ensures you receive the right propulsion system for your vessel, with professional support from purchase through installation and beyond.
What You Get with JB Marine GmbH
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Authentic Vetus M4.56 Marine Diesel Engine (52 HP) with Sail Drive
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5-Year Manufacturer Warranty (or 1500 hours)
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Personalized technical consultation and installation advice
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Fast shipping throughout Germany, Europe, and internationally
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Full Vetus spare parts and service support
Warranty Information
All Vetus engines supplied by JB Marine GmbH include an official 5-year or 1500-hour manufacturer warranty, covering materials and workmanship.
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Standard Warranty: 5 Years / 1500 Hours
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Extended Coverage: Available on request
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Support: Assistance with warranty registration and maintenance schedules
Frequently Asked Questions (FAQ)
What is the price of the Vetus M4.56 with Sail Drive?
Pricing depends on your chosen sail drive model (SP60 or SD10) and configuration. Contact JB Marine GmbH for up-to-date quotes.
Is the M4.56 suitable for sailboats and offshore cruising?
Yes — this engine is specifically designed for sailboats and long-distance cruising, offering excellent maneuverability and reliability.
What are the advantages of a sail drive system?
A sail drive offers better thrust efficiency, reduced vibration, simpler installation, and lower maintenance compared to a shaft drive.
Can I use a gearbox instead of a sail drive?
Yes. The M4.56 can be configured with a standard gearbox such as TM345(A), ZF12M, ZF15MIV, or TMC60P, depending on application.
Do you ship internationally?
Absolutely — we offer Standard, Express, and Freight options for safe delivery across Europe and worldwide.
Order Your Vetus M4.56 Marine Diesel Engine with Sail Drive Today
Enhance your vessel with the Vetus M4.56 – 52 HP Marine Diesel Engine with Sail Drive, engineered for quiet power, exceptional efficiency, and long-lasting reliability.
Contact JB Marine GmbH today for pricing, availability, and expert advice on installation and configuration.
Visit https://jbmarinegmbh.de/ to explore our full range of Vetus marine diesel engines and sail drive systems for boats of all sizes.
