Page 67: of Maritime Reporter Magazine (November 2025)

PROPULSION a pivotal development in the company’s marine offering. His- torically offering propulsion engines but more recognized for its focus on auxiliary applications, John Deere now breaks into

JD14 Marine Engine higher horsepower propulsion, offering new options for vessel

Con? guration: 6-cylinder, inline

Displacement: 13.6 liters operators looking for Tier 3 simplicity, extended durability and

Power Range (Marine): 298 to 599 kW (400 to fuel ef? ciency.

803 hp) “These engines are a major step forward,” Hughes said. “With

Auxiliary (Variable Speed): ~300–500 hp the JD18, we’re looking at a constant-duty 800 hp engine that

Propulsion (M1/M2 duty): Up to ~575 hp stays below Tier 4 thresholds, meaning no after treatment or urea

Cooling System: Single-circuit for simpli? ed — a big win for vessel operators.” radiator or keel-cooled installations

The engines feature completely redesigned platforms including overhead camshafts and rear gear train con? gurations, which con- tribute to reduced noise, improved service access, and enhanced

JD18 Marine Engine fuel economy. However, the JD14 model, is engineered with sin-

Con? guration: 6-cylinder, inline

Displacement: 18 liters gle-circuit cooling for easier keel-cooled or radiator-based instal-

Power Range (Marine): 410 to 599 kW (550 to lations — especially important in compact engine rooms.

803 hp) “These aren’t repurposed engines — they’re built for the work-

Up to 522 kW (up to 700 hp) of uninterrupted boat sector from the ground up,” Hughes added.

power at the M1 rating and up to 599 kW (up to

Though already deployed successfully in John Deere Construc- 803 hp) of power at the M2 rating.

tion, Ag, and Forestry, and industrial OEM applications like high-

Cooling System: Dual circuit or keel-cooled con- ? gurations available demand pump systems, the marine variants of the JD14 and JD18 are now being introduced for early vessel validation, with full commercial availability targeted for Q1 2026.

JD14 and JD18 Highlights:

While the industry keeps a close eye on hybrids and alternative • An overhead camshaft design and hydraulic fuels, Hughes is pragmatic. “We’re seeing diesel-electric systems lash adjusters to achieve better valve ? t and gaining traction — modular gensets that scale with demand. But eliminate valve if you can achieve 10–20% fuel ef? ciency gains with the right lash maintenance.

diesel engine, that’s often the most direct path to improving TCO • A rear gear train that provides customers with [total cost of ownership].” up to two rear PTOs and capacity for auxiliary power.

Whether it’s rethinking propulsion packages, expanding ser- • No SCR/DEF system required (avoids urea use) vice coverage, or supporting cutting-edge engine launches, En- • IMO Tier 2, EPA Tier 3, and EU RCD II certi? ed gines, Inc. remains grounded in a philosophy of partnership, up- • Built for high-load, continuous-duty marine time, and practical performance.

operation “Inland marine isn’t just our market,” Hughes said. “It’s in • Available with variable-speed auxiliary at our DNA. And with the JD14 and JD18, we’re ready for the constant-speed auxiliary and generator ratings next chapter.”

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