Wednesday, December 7, 2022

Cummins Announces New Keel Cooled QSC8.3 600 Horsepower Rating For Marine Vessels

Global power leader Cummins Inc. (NYSE: CMI) introduces a new rating for its QSC8.3 propulsion engine, expanding the keel cooled solution to 600 horsepower with an engine speed of 2800 rpm. This addition to the QSC8.3 power range means Cummins now offers 493 horsepower – 600 horsepower (368-441 kW) for both keel cooled and heat exchanger solutions.

Cummins is the first engine manufacturer to bring this power dense rating with a keel cooling option to market.

Optimized for use in light-duty applications including patrol boats and parasail boats, this engine is one of the core power solutions of the more than 1800 vessels that fish in Bristol Bay, Alaska. The QSC8.3 600 horsepower closed loop, dual circuit, keel cooled rating is an ideal match for vessels needing extra power and speed in the shallow fisheries like those found in Bristol Bay, where boats are continuously fishing in less than 12 inches of water. This is possible thanks to the QSC having the best power-to-weight ratio for its horsepower within Cummins’ offerings coming in at just 1875 lbs (850kg).

“The Cummins marine team has an in-depth knowledge of the complex remote fisheries, like Bristol Bay,” comments Mike Fourtner, Account Executive for Cummins Marine and commercial fisherman in Bristol Bay. “The 600-horsepower rating will increase speed, maneuverability and overall performance of Bristol Bay boats.” 

Ideal for use in any light-duty marine application, the keel cooled system is much more efficient in shallow environments than the alternative option of heat exchanger cooled engines, which brings in sea water through a pump, then encounters issues due to a build-up of debris from the water.

The innovative use of a closed loop keel cooled system to manage engine temperatures eliminates sea water pump issues while offering a zero-discharge solution. This provides a more environmentally conscious operation, by minimizing the possibility of contaminants entering the sea water.

This new QSC8.3 keel cooled rating is now available with a base warranty of 24 months or 1,000 hours. It is also backed by Cummins’ extensive network of over 9,000 service and dealer locations around the globe. 


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