Bukh DV10SME Marine Diesel Engine The Bukh DV10SME, manufactured by Bukh A/S since 1971, is a robust, single-cylinder, four-stroke diesel engine engineered for reliable inboard propulsion in small marine vessels. This compact powerhouse delivers dependable performance for auxiliary and primary drive applications, leveraging diesel’s inherent efficiency to ensure smooth operation in demanding saltwater environments. Key technical specifications underscore its straightforward design: a displacement of 482 cm³ with a square bore and stroke of 85 mm each, producing 10 hp DIN (7 kW) at 3,000 rpm under natural aspiration. It features a 2.25:1 reduction ratio via a direct mechanical S-drive transmission, optimizing propeller torque for efficient thrust. The electrical system includes a 12V starter motor (1.3 kW) and a 14V alternator (50A/700W) for seamless integration with onboard 12V/14V circuits. Measuring just 1,042 mm in length, 563 mm in width, and 763 mm in height, it maintains a low center of gravity for stable installation, while supporting a maximum continuous back pressure of 2.25 kg/cm² to handle marine exhaust demands. Tailored for marine use, the DV10SME excels in compactness and durability, with its single-cylinder configuration minimizing mechanical complexity and maintenance needs—ideal for owners prioritizing uptime in remote or coastal operations. The robust cast-iron construction and adherence to DIN 6270B standards ensure corrosion resistance and longevity, even under sustained loads, while the naturally aspirated setup avoids the added weight and complexity of forced induction systems. Performance-wise, it offers consistent power delivery at moderate RPMs, with high fuel efficiency from diesel’s energy density, enabling extended voyages without frequent refueling. Though single-cylinder operation may introduce minor vibrations at full load—mitigated by the reduction gearing—its torque-rich output provides responsive handling for displacement hulls. This engine is perfectly suited for tenders, workboats, fishing craft, and small passenger ferries, where space constraints and low-maintenance reliability are paramount. The Bukh DV10SME embodies proven Scandinavian engineering, delivering cost-effective propulsion that stands the test of time on the water. (248 words)