Commercial marine

Certified marine alternators for reliable power generation

Marine Alternators brochure

Leroy-Somer and Kato Engineering build quality alternators that are designed to withstand the test of time and extreme conditions.

Most of our alternators meet marine specifications by design. Nothing is altered to have them comply with some of the world’s most demanding rules.

We source the best materials, and craft our designs around reliability and performance. The experience and know-how of our workers is our ultimate guarantee of quality.

Solutions adapted to marine requirements

We offer alternators that meet the requirements of Maritime specifications, whether shaft alternators, essential as emergency alternators and electric generators. The electrical performance, mechanical characteristics, winding protection and compact size of products are essential characteristics for these types of uses. Our products are known for their reliability and rugged endurance.

Standards & Certifications 

Leroy-Somer and Kato Engineering alternators are manufactured in an iso 9001-2000 environment.

Our Marine alternators ship with certificates from all major classification societies.

Marine certificates

Over 50 years of experience Certified by all the major
classification societies
Over 8,000 vessels equipped Power range up to 35MW
Worldwide on-board repair and maintenance services Solas compliant range


SAPMER’S -40°C deep freeze tuna purse seiner with a Diesel electric propulsion system.

In 2009, the Piriou shipyard delivered Franche Terre to SAPMER, first of a series of three -40°C deep-freeze Tuna purse seiners for Tuna fishing in the Indian Ocean with a Diesel Electric propulsion system.

The 90-meter long ship is equipped with 4 alternators LSA 53 M9 1875kVA 690V 1000rd/min, driven by Wartsila engines. The alternators provide all the energy needed to operate the ship (hydraulic, -40°C freezing holds, propulsion, lighting, various auxiliaries, etc.)

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