Marine Diesel Engines and Generators

Caterpillar Marine is working with 60 Cat Dealers and 20 MaK & EMD dealers globally to ensure our customers' enduring success. Our product offerings include diesel & dual fuel propulsion and auxiliary marine engines, as well as complete marine generator sets. In addition to power generation, we offer after treatment solutions and complete Fuel Gas Handling Systems.

To ensure maneuverability, propulsion and control throughout your vessel we offer Conventional Propeller Systems in a Controllable Pitch layout and Azimuth Propulsion Systems in  Controllable and Fixed Pitch layouts as mechanical, electrical or hybrid driven solutions.


Our technology enabled solutions offer complete integrated monitoring, safety and control systems through total analysis of vessel data to further increase uptime and efficiency.


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Discover why Caterpillar Marine customers like Harley Marine Services say EPA Tier 4 Final engines with SCR technology are the better choice, by far.




Rely on nonstop power, even during your toughest days at sea. That’s our main priority for offshore operations: ZERO downtime.

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Handle the heaviest loads in the toughest conditions with Cat marine diesel engines. Whether in the harbor or at your terminal, our dependable high-speed engines will help give you all the bollard pull you need.

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The safety of your fleet and your crew is critical, so we are with you wherever you are and whatever your mission.

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Cat marine diesel engines set the standard for quality, performance and reliability. Throughout the power range, Cat engines have the power not just to accelerate, but to exhilarate.

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See how Cat engines can keep inland cargo vessels moving in any application.

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Caterpillar offers the industry’s best range of engines and power solutions for fishing vessels.

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Get your vessel to its destination on time, every time. Meet your deadline and your bottom line with reliable and efficient Cat and MaK marine diesel engines.

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Your passengers can count on you to get them where they’re going on time, every time. Tested and proven, Cat and MaK diesel engines keep your costs low with dual fuel options while maintaining clean, quiet comfort.

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Keep your vessels running and your waterways clear with Cat engines and power solutions for dredging.

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Cat® Asset Intelligence

Cat Asset Intelligence enables you to improve on the most critical aspects of your operations with advanced analytics.

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Tier 4 Final Engines

Marine Tier 4 Final

The Cat Tier 4 Final/IMO Tier III solution for marine engines offers a simple, reliable platform that reduces both emissions and fuel consumption

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Cat Propulsion Systems

Cat Propulsion Systems give you an optimized engine, generator and propulsion package, with every part covered and supported globally by Caterpillar.

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No matter where you go in the world, Caterpillar and Cat dealers are there with the parts and expertise to keep your engine running.

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Your MaK dealer is committed to maximizing your success, helping you get the most out of your operations with site-level solutions, service and support.

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Caterpillar is committed to providing equipment that meets the world’s most stringent emissions standards, as well as the use of alternative fuels.

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Marine Engine Application & Installation Literature

Access the latest application & installation information for the Cat marine 3100-3500 series engines, 3500B engine, and 3600 engine series.

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Register your engine to take advantage of the benefits of a Caterpillar warranty.

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A Century On The Water. Four Decades With Caterpillar

A Century On The Water. Four Decades With Caterpillar

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Commercial Vessel Financing

With 22 years of experience in marine lending, our commitment to your success is long term

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Optimism and New Building in the Ferry Segment

Optimism and New Building in the Ferry Segment

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Cat® Forums

Connect with experts and get advice from your peers in our online community.

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Cat® Dealers Make the Difference

Your Cat dealer is committed to maximizing your success, helping you get the most out of your operations with site-level solutions, service and support.

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The Power of Cat® Equipment

While superior quality is easy to see, it's over time and throughout your equipment ownership experience that the superior value of Caterpillar really becomes clear.

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Marine News

Read the latest Marine news here.

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