Civil marine reactors & icebreakers
OKBM Afrikantov
Rosatom's Nizhny Novgorod reactor design bureau behind Russia's marine PWRs, including RITM-200 and KLT-40S.
Maritime Propulsion Companies
217 companies, page 7 of 10
Filter companies
Diesel outboards
OXE Marine
Swedish maker of high-power diesel outboards (200-300 hp) with belt-driven transmission, for commercial, government and military boats.
Petrol outboards
Parsun
Chinese outboard maker (Suzhou Parsun Power Machine) offering 2- and 4-stroke petrol, diesel and electric outboards.
Inboard pleasure engines
Pleasurecraft Engine Group (PCM / Crusader)
US maker of PCM direct-injection inboard tow-sports engines and Crusader marine engines; part of Correct Craft since 2014.
PEM fuel cells
PowerCell Group
Swedish PEM fuel cell stack and system maker; its type-approved Marine System 225 is used in multi-megawatt ship installations.
Integrated automation & monitoring
Praxis Automation Technology
Dutch developer of Mega-Guard ship automation, propulsion control, DP and electric propulsion systems.
Micro/SMR & floating nuclear plants
Prodigy Clean Energy
Canadian developer of factory-built, transportable and marine-sited nuclear power plants for microreactors and SMRs.
Electric outboards & inboards
RAD Propulsion
UK developer of RAD 40 and RAD 120 electric drive-leg outboards for RIBs, tenders, workboats and defence craft.
Reduction gearboxes
Reintjes
German foundation-owned maker of marine reduction, reverse and combining gearboxes and hybrid systems from about 250 to 40,000 kW.
Naval & high-power gearboxes
RENK
Augsburg-based maker of naval and merchant marine gearboxes, combining gears, couplings and bearings; listed as RENK Group AG.
Marine gas turbines
Rolls-Royce
UK engineering group supplying MT30/MT7 marine gas turbines and, through Rolls-Royce Submarines, the UK's naval nuclear reactor plants.
Yacht & leisure engines
Rolls-Royce Power Systems (mtu)
Rolls-Royce business behind mtu high-speed marine diesels (Series 2000–8000), hybrid PropulsionPacks and NautIQ ship automation.
Li-ion energy storage systems
Saft
TotalEnergies-owned French battery maker supplying Seanergy lithium-ion modules for hybrid and electric ships, plus naval and submarine batteries.
Molten salt reactors
Samsung Heavy Industries
Korean shipbuilder developing molten-salt-reactor ship designs, in-house LNG fuel gas supply systems and SAVER Air air lubrication.
Commercial & workboat engines
Scania
Swedish truck and engine maker offering 9, 13 and 16-litre marine diesels (162-882 kW) for workboats, fishing, patrol and leisure craft.
Ducts & fins
Schneekluth Hydrodynamik
German developer of the Schneekluth Wake Equalizing Duct (WED), an energy-saving pre-duct fitted to about 3,000 ships.
Electric & hybrid system integrators
SCHOTTEL
German family-owned maker of azimuth propulsors, tunnel and rim thrusters, pump-jets, CP propellers and hybrid drives (50–30,000 kW).
Petrol outboards
Selva Marine
Italian outboard manufacturer in Tirano producing four-stroke and two-stroke outboards and RIB/boat packages since 1959.
Shell-and-tube heat exchangers & charge air coolers
Sen-Dure Products
Fort Lauderdale maker (since 1935) of copper and CuNi shell-and-tube heat exchangers and oil coolers for marine engines from 10 to 2,000+ hp.
Controllable-pitch propellers
Servogear
Norwegian maker of CPP propulsion packages and gearboxes for fast ferries, workboats and yachts, part of BOS Power since 2022.
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.
Fixed-pitch propellers
Sharrow Marine
Michigan developer of toroidal (looped-blade) propellers for outboards, sterndrives and inboards, claiming 10–30% more range.
Li-ion energy storage systems
Shift Clean Energy
Vancouver-based maker of liquid-cooled marine battery systems and the PwrSwäp battery-as-a-service swap model.
Electric & hybrid system integrators
Siemens Energy
German energy technology group supplying diesel-electric and hybrid propulsion (BlueDrive PlusC), drives, motors and BlueVault marine batteries.