Commercial Diesel Outboards

Lower Fuel Cost, Higher Uptime

Engineered for Hard-Duty Marine Operations

Ring Power Cox Marine delivers purpose-built diesel outboards designed for the toughest commercial environments. From harbor pilots and ferries to charter fleets and workboats, our high-torque V8 engines provide extended range, lower fuel costs, and mission-critical uptime.

  • Up to 1,052 Nm of torque at 2,600 RPM ensures smooth acceleration and controlled power when carrying cargo, passengers, or working in strong currents.

  • With fuel consumption as low as 260 g/kWh, Cox diesel outboards deliver up to 30% better fuel efficiency compared to gasoline engines—keeping your operating costs down and your vessels on the water longer.

  • Diesel’s higher flashpoint and compression-ignition design eliminate spark-ignition risks, making it safer for commercial operations in crowded ports, marinas, or near volatile materials.

  • Commercial-grade engineering and service intervals up to 1,500 hours mean less downtime, lower maintenance costs, and more operational hours generating revenue.

Commercial Use Cases

  • Harbor & Pilot Boats

    Reliable power for maneuvering large vessels with precision.

  • Charter & Ferry Operators

    Extended range and fuel efficiency maximize profitability and passenger uptime.

  • Workboats & Utility Fleets

    Torque-rich propulsion for construction, dredging, and support operations.

  • Oil & Gas Support

    Safer fueling with diesel compatibility and reduced logistics complexity offshore.

Total Cost of Ownership (TCO) Advantage

Initial Investment vs. Lifetime Savings

While diesel outboards require higher upfront costs, the total cost of ownership is significantly lower thanks to:

  • Fewer refueling stops

  • Reduced fuel expense over time

  • Longer engine life cycles

  • Extended maintenance intervals

Ring Power can provide a customized fuel and maintenance savings analysis for your fleet.

Request Fleet Evaluation

Compliance & Certficiations

Cox diesel outboards are fully compliant with:

  • EPA Tier 3

  • IMO II

  • RCD II

  • BSO II

This ensures your fleet meets regulatory standards without sacrificing performance.

Spec Sheet