Commercial Marine

Alternators for all marine operation & power generation needs

Certified marine alternators for reliable power generation & efficient operation

Maritime transport has developed considerably in recent years and is increasingly demanding, asking for more safety flexible operations and environmental performance. The conformity and reliability of the alternators on board the vessels have taken the same path, with an ever increasing list of specifications.

Nidec Leroy-Somer alternators are proven by all standards

For all types of vessels, Leroy-Somer offers alternators capable of providing the expected performance and reliability levels. Our experts and R&D teams have developed the best solutions for this industry.

With over 50 years of experience and thousands of ships and equipments (cargo vessels, cruise ships, industrial fishing vessels and port cranes…) equipped with Nidec Leroy-Somer alternators, we are the right choice for all your Marine equipment.

Download the marine brochure to know more.

Contact us

+33 (0)5 45 64 45 64

  • Marine propulsion

    marine propoulsionVessels electric motors need high performance power supply start and move the vessel forward 24/7. A generator set with high quality and performance components is essential to provide reliable power .

    Nidec Leroy-Somer alternators are adapted to all propulsion systems (diesel electric, LNG...) and are designed with the highest quality standards to meet the requirements of the commercial marine industry. Our Marine alternators ship with certificates from all major classification societies.

    We offer alternators with power capacities up to 25MW.

    LSAM range 


    For your marine propulsion products, choose Nidec Leroy-Somer!


  • Shaft alternators

    Marine shaft alternators are still a very relevant solution when trying to maximize a ship operational efficiency and flexibility. With the ability to work in Power Take Out, Power Take in and Power to Home, alternators offer a real asset for high performance ship propulsion.

    The Nidec Leroy-Somer shaft generators are the perfect answer to these needs and show a high reliability in any operation (PTO, PTI, PTH). With lower operating costs and increased efficiency, our alternators are the best solution for this application.

    LSAM range 



    The electrical performance, mechanical characteristics, winding protection and compact size of our products make them the right choice for all marine applications.


  • Auxiliary power

    Marine auxiliary

    A vessel critical equipments (navigation system, hoists, cranes, fridges, pumps...) must be supplied with safe and economical energy when operating at sea. Our reliable alternators are the best solution for your units to get the most reliable and efficient auxiliary power.

    Nidec Leroy-Somer alternators offer incomparable durability thanks to their design and protection systems. This fe operation of the ship and reduce maintenance costs.

    LSAM range 


    Nidec Leroy-Somer alternators comply with all regulations and will surely meet all your requirements.


  • Back-up power

    Backup power marine

    For vessels, safety is of utmost importance. The power supplied to the engine for propulsion or to other components is critical. Therefore, a reliable backup power installation must be available when needed to avoid any blackout. Our alternators have proven unmatched reliability in back-up power applications and are the best solution for your units.

    Nidec Leroy-Somer is the global leader in marine alternators. Vessels around the world are equipped with Leroy-Somer alternators, and key OEMs and engine manufacturers trust us for the quality of their power generation.

    LSAM range 


    Nidec Leroy-Somer designs high quality alternators adapted to all types of installations.


  • References

    Some of our references in Marine :

    Marine references


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