Commercial marine engine : in-board diesel engine 400 - 600 hp (direct injection, turbocharged)
6125 SFM75 (380 hp @ 1800 rpm -> 610 hp @ 2100 rpm) John Deere

The 12.5L six-cylinder engine is offered as either a propulsion or gen drive engine in either keel cooled or heat exchanger configurations. The engines are either turbocharged, non-aftercooled, turbocharged with jacket water aftercooling or turbocharged with sea water aftercooling. The propulsion engines feature constant power to 400 rpm below rated speed, making these engines an excellent choice for launches, work boats, trawler yachts, and patrol craft.
Watercooled Turbocharger and Exhaust Manifold
- Cooler and quieter environment for vessel and crew
- Reduced external connections eliminates hoses and fittings that can leak or break
Directed Top-liner Cooling
- Reduces upper liner temperature by as much as 130 degrees Fahrenheit
- Durable and reliable power cylinder components
Replaceable Wet-type Cylinder Liners
- Hardened and precision machined for long life
Corrosion Resistant Components
- Provides engine protection from the effects of seawater