Electric Propulsion System Suppliers

Choosing an electric propulsion system at the newbuild stage shapes how the vessel will sail for the next 25 to 30 years. The package replaces the traditional shaft line with a power chain — generators, switchboards, transformers, frequency drives, and electric motors — that turns the propeller or thruster.

Fuel burn drops, noise levels fall, and maneuvering improves, but the upfront cost is higher, and the integration work is far more complex. Getting the right scope, the right voltages, and the right partner matters from the first design sketch onwards.

RecordsMarine maintains a directory of electric propulsion system suppliers for shipyards, naval architects, and owner project teams sizing a system for a new build or retrofit.

What a Full Package Includes

An electric propulsion supply covers far more than the motor at the end of the shaft. A complete scope normally includes:

• Main generators sized for the total electrical load
• Main switchboards and bus tie breakers
• Step-down transformers
• Frequency drives (also called variable speed drives)
• Propulsion motors — synchronous or asynchronous
• Cooling systems for drives and motors
• Control consoles for the bridge and engine room
• Power management system (PMS) software
• Cabling, busbars, and fault protection equipment
• Commissioning, sea trials, and crew training

Suppliers of electric propulsion systems usually quote the whole package as one bid, since splitting the scope between makers creates integration problems later.

Where Electric Propulsion Fits Best

The technology suits some vessels better than others:

• Cruise ships and ferries — quiet operation matters
• Offshore supply and DP-class vessels — precise thrust control
• LNG and LPG carriers — efficient use of boil-off gas
• Icebreakers — sustained heavy torque at low speed
• Cable layers and survey ships — fine speed control
• Naval and patrol vessels — low acoustic signature
• Yachts and inland barges — clean engine room layout
• Battery hybrid coastal vessels — zero emissions in port

Bulk carriers and tankers on long, steady ocean routes often still prefer direct mechanical drive, where simpler equipment wins on cost and reliability. Providers of electric propulsion systems run the trade-off analysis before final sizing.

Common System Configurations

Electric propulsion comes in several layouts:

• Diesel-electric — generators feed motors directly
• Gas-electric — LNG engines drive the same electrical setup
• Hybrid diesel-battery — combined power with peak shaving capability
• Fully battery-electric — short-route ferries and harbor vessels
• Pod drives — motor and propeller in an external pod (Azipod, SSP)
• Shaft-line electric motor inside the hull, traditional shaft layout
• Podded thrusters — Azimuth thrusters with electric drive inside

Each layout has different efficiency, redundancy, and maintenance profiles. Distributors of electric propulsion systems advise on the right one for the trade pattern and operational envelope.

Recommended Brands

The market is led by a small group of OEMs:

• ABB Marine (Azipod, Onboard DC Grid)
• Siemens Energy (BlueDrive PlusC)
• Wärtsilä (Low Loss Hybrid)
• Kongsberg Maritime
• Schottel
• General Electric (GE Power Conversion)
• Yaskawa
• Rolls-Royce Marine

Each carries its own design philosophy, redundancy options, and service network. A reference visit to a vessel already running the chosen system gives the most realistic picture.

What to Check at Quote Stage

Here, you can find a short list to confirm before signing:

• Total propulsion power and redundancy class
• DP notation requirements where applicable
• Voltage levels (LV, MV, HV) and bus arrangement
• Integration with PMS and bridge controls
• Class society type approval
• Cyber security compliance under IACS UR E22
• Sea trial scope and acceptance criteria
• Training package for engineers and ETOs
• Spare parts availability for the system's life

A signed scope of supply with all interfaces defined prevents costly rework during commissioning.

Frequently Asked Questions

What is the lead time for a full propulsion package?

12 to 24 months, depending on system size and yard schedule.

Can a diesel mechanical vessel be retrofitted to electric drive?

Yes. The work involves new generators, switchboards, drives, and motors.

How much fuel can electric propulsion save?

Savings depend on the operating profile. DP vessels and ferries often save 15 to 25 percent. Steady-route cargo ships see smaller gains.

Find an Electric Propulsion System Supplier Near You

The list below covers makers and authorized agents working with shipyards, retrofit projects, and fleet operators across major maritime regions. Compare the entries, request quotations, and shortlist a partner that matches your project scope and trade pattern.