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Speed, innovation and performance
For your large diesel engines
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A strong partner for ships and power plants

At OSM Atlantic, we know that every time your engine stops, it affects your business. That's why we rely on innovative technologies developed specifically to ensure fast and efficient service, so that you can get back to business as quickly as possible.


Benefit from preventive or diagnostic inspections and get an accurate picture of your components’ condition.
See the benefits of an inspection

Maintenance and repair

Choose a complete maintenance and repair service that ensures the performance of your diesel engines.
Find out what we can do

Diesel engine parts sales

Quickly get high-quality, competitively priced mechanical parts for your large diesel engines.
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Specialized machining on site or in the workshop

Reduce your engine downtime with unmatched services tailored to marine environments, based on proprietary technologies and executed with unparalleled efficiency.
Explore the full potential

An exclusive technology

Guided by innovation
At OSM Atlantic, research and development are key. Our flagship technology, the Bore, allows us to achieve exceptional levels of precision and unparalleled speed of execution. Inspired by the open sea winds, OSM Atlantic is constantly seeking to reach new horizons.
Discover the bore


A company in action
At the forefront of large-scale diesel engine maintenance and repair, OSM Atlantic is determined to offer its customers first-rate service, in close partnership. With its home base in the Magdalen Islands, in the Gulf of St. Lawrence, our team already has one foot in the ocean. The team can work on an engine on site in your facilities or in your building, wherever it is ... even on the open sea!
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See our team in action
Our team stands ready for any situation! Whether your engine needs just a few adjustments or major repairs, we'll get your engine back up and running as quickly as possible. Whether you need an inspection, in-shop machining or on-site repairs, we put our expertise to work for you.
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The latest news from osm atlantic

News Releases

Best Practices for Maintaining Large Diesel Engines: A Comprehensive Guide

Large diesel engines, powering everything from ships and generators to industrial machinery, play a vital role in various industries, such as maritime, mining and energy. Leading manufacturers of these large Diesel engines such as Wärtsilä, Sulzer, MAN, MAK, and CAT are all supported by OSM Atlantic’s service team. Other manufacturers supported by OSM Atlantic are […]
News Releases

Extending the life of large diesel engines - with high quality spare parts

As part of our commitment to providing our customers with a comprehensive large diesel engine maintenance service, OSM Atlantic offers a wide range of spare parts for many makes of engines and generators. No matter what industry you are in, be it marine, mining, commercial or energy, a professional diesel engine maintenance is essential. Replacing […]


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    Frédérik Lévesque
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