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10 Best Marine Diesels

Oil burners large and small powering dinghies, yachts and oceanliners

Sep 15, 2020
Photographers: Diesel Power Staff
Diesels in the deep blue sea! Or, at the lake, or even down the river. Although oil burners in land-based trucks are our primary beat, there are occasions where we discuss the engines' performance and capability for maritime vessels, too.
With sizes ranging from three-cylinders small (Yanmar's 3JH40), to absolutely mammoth—by way of the 14-cylinder, 2,300-ton W rtsil RT-flex96C—diesel engines power everything from dinghies on a pond to U.S. Coast Guard icebreakers in the Arctic Circle.
Diesel Power featured marine engines in its torque report. We've assembled this collection of powerplants (and a few boats) for you to peruse, and hopefully they'll make you consider diesel for your seafaring vehicle.
 
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Yanmar 12AYM-WGT

 
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Hyundai Seasall S270

 
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Neander Shark Dtorque 111

 
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Wartsila 50DF

 
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Cummins QSB6.7

 
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Electro-Motive Diesel E 23

 
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Mercury Marine 4.2L 370 TDI

 
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2009 Miami Boat Show

 
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Mann V-12 2000

 
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GM Detroit Diesel

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