Speed, innovation and performance
For your large diesel engines
Discover our services

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.
Learn more

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!
Learn more about us


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.
Contact us

The latest news from osm atlantic

News Releases

Happy Holidays from the OSM Atlantic Team   The OSM Atlantic team wishes you a very happy holiday season! Stay healthy and get involved in exciting projects in the new year! We thank you for your loyalty and support. We remain available during the holiday season for any emergency related to  large diesel engine repair […]
News Releases

Canada's Marine Sector - Opportunities and Challenges

OSM Atlantic is following closely a series of articles published in the Quebec press La Presse and Les Affaires in the last few months presenting the multiple challenges of the maritime sector in Quebec. The Quebec government stated in its Avantage Saint-Laurent Strategy, published in June 2021, that "maritime transport is an alternative to road […]


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    Frédérik Lévesque
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