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15 companies

Frank W. Murphy (UK) Ltd.

Salisbury, United KingdomUpdated May 2026

FWMurphy manufacture control and instrumentation systems for engine driven equipment: generators, pumps, marine propulsion systems and off-road equipment.

General Electric Co. GE Drive Sys.

Salem, VA, United StatesUpdated May 2026

GE Drive Systems division of General Electric, a global industrial supplier providing electric drive power and propulsion systems for marine, rail, mining, and stationary power industries, including naval vessels and U.S. Maritime Administration ships.

Harbormaster Marine, Inc.

Livonia,, MI, United StatesUpdated Apr 2005

Harbormaster Marine, Inc. is a US manufacturer of heavy-duty outboard drive marine propulsion systems and tunnel (bow) thrusters, known for durable, high-quality marine parts and worldwide service support.

MAAG Gear AG

Winterthur,, SwitzerlandUpdated Feb 2006

MAAG Gear AG is a global manufacturer of high power gear transmissions for marine propulsion systems, as well as gear units for cement, compressor drives, power generation, and pumps.

MAN PrimeServ Diesel (USA East)

Pompano Beach, FL, United StatesUpdated Sep 2017

MAN Diesel & Turbo SE, based in Augsburg, Germany, is the world’s leading provider of large-bore diesel engines and turbomachinery for marine and stationary applications

RENK Aktiengesellschaft

Augsburg, GermanyUpdated Mar 2006

RENK Aktiengesellschaft is a German company specializing in the development and manufacturing of marine propulsion systems, gear units, and related engineering solutions for the maritime industry.

Rice Propulsion

Mazatlan, Sin, MexicoUpdated Jul 2004

Rice Propulsion is a company based in Mazatlan, Mexico, specializing in marine propulsion systems and propeller services.

Rolls-Royce of North America

Boston, MA, United StatesUpdated Oct 2003

Rolls-Royce of North America provides advanced marine propulsion systems, power solutions, and related services to the maritime industry.

SSS Clutch Co. Inc.

New Castle, DE, United StatesUpdated Jun 2001

SSS Clutch Company, Inc. is a New Castle, Delaware-based manufacturer of synchro-self-shifting (SSS) clutches used in naval and marine propulsion systems, including U.S. Navy submarines and surface vessels.

Skinner Engine Co.

Erie, PA, United StatesUpdated Nov 1998

Skinner Engine Company was a historic American marine steam engine manufacturer founded in 1868 in Herkimer, New York and based in Erie, Pennsylvania from 1873 until its closure in 2013. The company produced approximately half of all Universal Unaflow steam engines built in the United States.

Trans Marine Propulsion Systems, Inc. (TMPS)

West Seattle,, WA, United StatesUpdated Jul 2005

Trans Marine Propulsion Systems specializes in 24/7 worldwide service and repair of 2- and 4-stroke European and Asian-built marine diesel engines, offering field and shop services along with OEM parts distribution.

ZF Hurth Marine SpA

Arco, TN, ItalyUpdated Aug 2006

ZF Hurth Marine SpA is a global market leader in marine propulsion systems, supplying complete driveline systems and components for all types of vessels with a focus on safety, long product lifecycle, and customer comfort.

ZF Marine GmbH Marine Propulsion Systems

Friedrichshafen, GermanyUpdated Sep 2016

ZF Marine GmbH, based in Friedrichshafen, Germany, is part of ZF Friedrichshafen AG, a global technology company supplying advanced mobility products and systems including marine propulsion solutions.

ZF Marine LLC

Fort Lauderdale, Florida, United StatesUpdated Aug 2006

ZF Marine LLC is the global market leader in marine propulsion systems, supplying complete driveline systems and components such as transmissions, propellers, surface-drives, and controls for all types of vessels.

ZF do Brazil Ltda

Sorocaba-SP, BrazilUpdated Aug 2006

ZF do Brazil Ltda is a global market leader in marine propulsion systems, supplying complete driveline systems and components for all types of vessels with a focus on safety, long product lifecycle, and customer comfort.