Cummins Onan Marine Generators

Marine Generators Depot supplies Cummins Onan Marine Generators for recreational boats, sportfishing vessels, motor yachts and larger marine applications. The Onan range is particularly well known for its Quiet Diesel (QD) marine gensets, combining compact installation, onboard electrical power and service-focused design for vessels operating away from shore power. Cummins currently positions its recreational Onan marine range from approximately 4kW to 110kW.

For smaller boats and yachts, the range includes popular 4kW, 5kW, 6kW, 7.5kW, 8kW and 9kW marine generators. These compact boat generators can suit applications such as battery charging, refrigeration, lighting, water heating and appropriately sized marine air-conditioning systems. Cummins also offers a 7/9kW Space Saver configuration where machinery-space limitations are an important consideration.

Moving upward in capacity, buyers can compare 9.5kW, 11kW, 11.5kW, 13.5kW, 17kW, 19kW, 21.5kW, 22.5kW, 27kW and 29kW Onan marine generator configurations. These higher-output yacht generators are useful where vessels must support multiple air-conditioning units, refrigeration, galley appliances, battery chargers, pumps and other simultaneous hotel loads. Available output varies with frequency and generator configuration, so the vessel’s actual electrical demand should determine final sizing.

Cummins Onan also extends beyond compact recreational gensets. The current marine portfolio includes 40kW–110kW Onan QD generators, while the wider Cummins marine generator family includes C Power systems for substantially larger commercial power requirements. Cummins states that its broader marine genset portfolio serves recreational, commercial and government vessels for service power, emergency power and other marine applications.

Many Cummins Onan models are offered in 50Hz and 60Hz marine generator configurations, allowing buyers to match the vessel’s existing electrical system. Model-specific options can also differ in voltage, phase, certification and enclosure arrangement. Selecting a 5kW Onan boat generator, 9kW yacht genset or 20kW-plus marine diesel generator therefore requires checking more than output alone—frequency, voltage, phase, installation dimensions, cooling and expected load profile should all be verified.

For replacement marine generator projects, Marine Generators Depot can assist customers comparing an existing Onan genset with currently available alternatives. An older unit should be matched against the proposed replacement for power output, electrical configuration, mounting space, exhaust arrangement, cooling connections and controls. Cummins integrates the engine, alternator and control system within its marine generator portfolio, while its established service network supports parts, maintenance and warranty needs across many operating regions.

Whether you are sourcing a compact 4kW or 5kW marine diesel generator, an 8kW Onan boat generator, a 13.5kW yacht generator, a 27kW genset or a larger commercial marine generator, Marine Generators Depot can help identify suitable Cummins Onan options based on vessel application, required electrical output, 50Hz or 60Hz configuration and delivery destination.