Marine & Industrial Engines

Marine & Industrial Engines

The simple and robust design of our two-cycle engine has stood the test of time by adapting to new demands and requirements. We continue to build on this legacy, with a commitment to increased performance, durability, reliability and maintainability. 

Fixed Pitch:

Our two-cycle engine provides a large margin of available power above the demand curve to provide superior acceleration and responsiveness. By comparison, in the fixed pitch propeller applications, the available power of a typical four-cycle engine narrowly meets the propeller demand curve.

Controllable Pitch

The additional power capacity of our two-cycle engine enables it to accept virtually any pitch at any rate, without overload. Four-cycle engine manufacturers limit available engine power to levels significantly below their engine's continuous rating in order to protect against engine overload.

Pump Applications

Our two-cycle engine is more responsive and productive with a lower cost single gear driveline. A four-cycle engine is restricted to operate in a very narrow range, compromising productivity and fuel consumption, requiring a second gear in the driveline.


Our two-cycle 710 engine is the most responsive in the world. With generator sets, testing proves our 5,000 horsepower 20-cylinder engine is able to accept full load in one step and recover speed in two seconds. Similar testing in marine applications has demonstrated acceleration from idle to full load in less than 11 seconds. By firing each cylinder once per revolution and benefiting from plentiful combustion air through our unique clutched turbo-changer design, the 710 engine is unique in its ability to smoothly accept load at any engine speed and at a rate no other medium speed engine in the world can match.


The EMD® E 23 B 710 Series engine has achieved US EPA Tier 4 Final Certification and we are applying for IMO III certification. The Tier 4 E 23 B is the industry’s only completely integrated solution please click on the brochure link below for a detailed explanation. Our bullet Proof US EPA Tier 3 engines are available for vessel repowers. IMO II engines are still produced today and immediately available. Our two-cycle engine continues to respond to new emissions challenges while maintaining our efficiency and life-cycle cost advantages.

EMD Marine & Industrial Engines

Authorized Dealers and Distributors

Marine & Industrial Engines Brochure

We are the world leader in manufacturing two cycle, medium speed engines for marine, drilling, power generation, and locomotive markets.




Progress Rail Achieves EPA Tier 4 Final Certification

Progress Rail is proud to announce the receipt of its EPA Tier 4 Final Certification.




Customers worldwide continue to choose the EMD® 710 for its significant advantages in power, durability, and responsiveness, which is unmatched in the industry.


EMD® Powered Tugboats - Moran
EMD® Powered Ferries- Washington State Ferries
EMD® Powered Towboats - Marquette Transportation

Available Power Conversion Graph - EMD® 2-Cycle versus 4-Cycle

EMD® 2-cycle vs 4-cycle EMD® 2-cycle vs 4-cycle
Fixed Pitch Propeller Applications Fixed Pitch Propeller Applications
Pump Applications Pump Applications


Progress Rail has developed two natural gas solutions to help our customers lower operating costs and reduce emissions. Dynamic Gas Blending (DGB) is a dual-fuel technology allowing for the seamless transition between using diesel or natural gas. Direct Injected Gas offers exceptional savings with a more than 95 percent substitution rate with the same horsepower and transients as a diesel engine.



With a focus on power, performance, and innovation, Progress Rail, through its EMD® brand, has been the premier provider of diesel-electric locomotive technology for more than 95 years. Our EMD® engine product support consists of both OEM and aftermarket replacement parts.