Licensee engine builders
Akasaka Diesels
Japanese builder of its own low/medium-speed 4-stroke marine engines and of J-ENG UEC 2-stroke engines under licence.
Medium-speed 4-stroke engines
19 companies
Trunk-piston four-stroke engines (roughly 0.5–20 MW) used for geared propulsion and gensets on cruise ships, ferries, offshore and naval vessels, increasingly in dual-fuel versions.
Filter companies: Medium-speed 4-stroke engines
Engine designers & manufacturers
Anglo Belgian Corporation (ABC)
Ghent-based builder of medium-speed diesel, dual-fuel and hydrogen engines for workboats, tugs, dredgers and ferries.
Engine designers & manufacturers
Bergen Engines
Norwegian maker of medium-speed liquid-fuel and lean-burn gas engines (B33:45, B36:45, C25:33, C26:33) for marine and land use; owned by Langley.
Engine designers & manufacturers
Caterpillar Marine
Caterpillar's marine business: Cat high-speed diesels, MaK medium-speed engines, gensets, controls and monitoring for commercial and yacht use.
Licensee engine builders
CSSC Marine Power
CSSC engine-building company in Zhenjiang, China; long-standing licensee for Everllence (ex-MAN) four-stroke marine engines.
Engine designers & manufacturers
Daihatsu Infinearth
Japanese medium-speed engine maker (formerly Daihatsu Diesel) building marine auxiliary gensets, propulsion engines and dual-fuel engines.
Engine designers & licensors
Everllence
Augsburg-based engine maker (formerly MAN Energy Solutions): B&W two-stroke designs, four-stroke engines, Alpha propellers and cryogenic fuel systems.
Licensee engine builders
Fairbanks Morse Defense
US naval propulsion supplier building licensed medium- and high-speed diesels, Ward Leonard MIL-spec motors and naval propulsors.
Licensee engine builders
Guangzhou Diesel Engine Factory (GDF)
Chinese medium-speed marine engine maker and J-ENG UE two-stroke licensee with plants in Guangzhou and Jingjiang.
Licensee engine builders
Hanwha Engine
Korean licensee builder of low-speed two-stroke (Everllence B&W, WinGD) and four-stroke marine engines, formerly HSD Engine, part of Hanwha.
Licensee engine builders
HD Hyundai Heavy Industries
Korean shipbuilder whose Engine & Machinery division builds B&W and WinGD two-stroke engines, HiMSEN four-strokes, propellers and FGSS.
Engine designers & manufacturers
IHI Power Systems (Niigata)
IHI Group engine maker selling Niigata-brand medium-speed diesel, dual-fuel and ammonia engines, Z-Peller thrusters and gas turbines.
Licensee engine builders
Mitsui E&S
Japan's largest builder of low-speed two-stroke marine engines under Everllence B&W and WinGD licences, with dual-fuel methanol, LNG and ammonia models.
Licensee engine builders
Shaanxi Diesel Engine Heavy Industry (SXD)
CSSC-group engine builder in Xingping, Shaanxi, producing licensed Everllence and Pielstick medium-speed diesels for naval and merchant ships.
Licensee engine builders
STX Engine
Korean builder of Everllence-licensed marine engines and defence engines, based in Changwon and majority-owned by UAMCO.
Engine designers & manufacturers
The Hanshin Diesel Works,
Kobe-based builder of low-speed four-stroke direct-drive marine diesels for Japanese coastal vessels, plus licensed small-bore two-strokes.
Engine designers & manufacturers
Wärtsilä
Helsinki-based marine and energy group supplying multi-fuel 4-stroke engines, hybrid systems, fuel systems, propellers, thrusters, waterjets and seals.
Engine designers & manufacturers
Weichai
Chinese engine group building high-speed WP/WD and medium-speed WH marine engines, including LNG and methanol versions; owns Moteurs Baudouin.
Engine designers & manufacturers
Yanmar
Japanese maker of medium-speed EY diesel and dual-fuel engines and high-speed marine diesels from 10 mhp for leisure and commercial craft.