Vetus M2.13S Marine Diesel Engine with Sail Drive: Integrated 12hp Power
The Ultimate Space-Saving, Performance-Driven Solution for Modern Small Craft
Introduction
The Vetus M2.13S marine diesel engine with integrated sail drive is a complete propulsion system that represents the cutting edge of design for small sailboats. This package combines the ultra-compact, reliable 12hp Vetus M2.13 diesel engine with a perfectly matched sail drive leg, creating a seamless and incredibly efficient power solution. At Wave Inboard Motors, our expertise in installing these integrated systems allows us to leverage their key advantage: a clean, simple, and highly effective repower that transforms the performance and usability of a boat.
This 12hp saildrive package is the ideal turn-key solution for modern sailboats and trailerable cruisers from 22 to 28 feet. The integrated design eliminates the complexity of aligning a separate engine and transmission to a propeller shaft. For owners looking to upgrade from an outboard or an old, worn-out inboard, the Vetus M2.13S for sale offers a modern, quiet, and remarkably simple diesel saildrive repower path that maximizes interior space and improves sailing performance.
This guide provides a detailed look at the complete package specifications, a clear comparison to traditional shaft drives, and a breakdown of the unique benefits of choosing an integrated system.
Technical Specifications Table (Complete Package)
| Specification | Detail |
|---|---|
| Model | Vetus M2.13S (Engine & Saildrive) |
| Engine Type | 2-Cylinder, 4-stroke, water-cooled diesel |
| Max Output | 12 HP (8.8 kW) @ 3600 RPM |
| Cooling System | Heat Exchanger (Closed-Cooling) |
| Starting System | 12V Electric Start |
| Alternator Output | 12V – 40A |
| Dry Weight | 95 kg (209 lbs) (Approx. Engine & Drive) |
| Saildrive Unit | Vetus S-Type Saildrive |
| Gear Ratio | 2.62:1 (Standard) |
| Propeller | Optimized for Vetus Folding Prop |
Saildrive vs. Shaft Drive Comparison Table
| Feature | Vetus M2.13S (Saildrive) | Traditional Shaft Drive (e.g., M2.13 only) |
|---|---|---|
| System Type | Integrated Engine & Drive | Separate Engine, Transmission, Shaft, Strut |
| Installation | Simplified. One unit, no alignment needed. | Complex. Requires precise engine/shaft alignment. |
| Space Usage | Extremely Compact. Engine can be placed further aft. | Larger footprint due to engine placement for shaft angle. |
| Performance | ** Superior.** Optimal propeller angle for efficiency and thrust. | Good, but efficiency can be lost to shaft angle. |
| Noise/Vibration | Very Low. Drive leg is rubber-mounted to isolate vibration. | Low, but more vibration can transfer through shaft. |
| Maintenance | Requires Haulout for leg service/bellows replacement. | Shaft seal & bearing can often be serviced in water. |
| Draft | Reduced. Propeller is closer to the hull. | Determined by shaft and propeller depth. |
| Ideal For | Modern Hulls, Space-Constrained Boats, Repowers | Traditional boats, where simplicity is key |
Verdict: The Vetus M2.13S Saildrive package wins on integration, simplicity of installation, space-saving, and performance efficiency. It is the premier choice for a clean, modern repower where maximizing interior space and achieving optimal propulsion efficiency are top priorities. A traditional shaft drive installation, while simpler to maintain in some aspects, cannot match the compactness and optimized thrust of a well-designed saildrive system.
Replacement Options Table
| Consideration | Keep Old Outboard/Engine | Install M2.13S Saildrive Package | Install Shaft Drive Engine |
|---|---|---|---|
| Condition | Unreliable, noisy, poor astern performance | Like-new, integrated, high-performance system | Like-new engine, but complex installation |
| Warranty | None | Full 1-Year Warranty on Entire System | Warranty on engine only |
| Performance | Poor | Excellent (Optimal thrust & handling) | Very Good |
| Astern Handling | Poor | Superior (Fixed, deep propeller) | Good |
| Total Project Value | N/A | Highest (Complete integrated solution) | High (Engine, but added install complexity) |
Expert Recommendation: For a boat that is a candidate for a saildrive (e.g., a modern hull design), the Vetus M2.13S complete package is overwhelmingly the best value and most effective solution. While the initial cost may be higher than a shaft drive engine alone, the simplified installation often results in comparable total project cost. The benefit you gain is a perfectly matched, optimally performing system that is under warranty as a single unit. For a true transformation from an outboard, the saildrive is the only way to replicate the handling and performance of a dedicated inboard system.
Pros and Cons Table
| Pros | Cons |
|---|---|
| Fully Integrated, Optimized System | Saildrive leg requires haulout for service/repair |
| Simplified Installation & No Alignment | Vulnerable to damage from grounding (vs. shaft) |
| Space-Saving Design | |
| Reduced Noise & Vibration | |
| Superior Maneuverability & Efficiency | |
| Shallow Draft Capability |
Link to Our Core Service Pages:
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“Ensure a flawless integration with our certified 【Saildrive Installation Services】.”
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“Protect your investment with our specialized 【Saildrive Maintenance & Bellows Replacement】 service.”
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“Our experts can manage your entire 【Small Sailboat Repower Project】 from start to finish.”
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“We source and supply genuine 【Vetus Saildrive Parts】 and seals.”
Link to Informational Blog Posts:
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“Understand the key differences in 【Saildrive vs. Shaft Drive: A Complete Guide】.”
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“Upgrading from an outboard? Read 【Outboard to Diesel Inboard Conversion: Is It Right For You?】.”
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“Planning your project? We break down the 【Costs of Repowering a Sailboat】.”
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“We explain the critical factors in 【Choosing the Right HP for Your Sailboat Repower】.”

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