Solutions for Ships and Ports
Electric Propulsion System

Note : This products is under development

Features

Zero-Emission Ships

We are helping zero-emission vessels become more widespread in both domestic and international shipping, thereby contributing to efforts to achieve carbon neutrality in international maritime transport by 2050, as well as the goals outlined in plans to combat climate change.

Increased Labor Efficiency

The electrification of ship control systems enhances compatibility with IoT devices (sensors and communication devices). This helps address labor shortages by enabling increased labor efficiency through automated operations.

Low Noise and Vibration

The engine has been replaced with a low-noise, low-vibration motor, which provides a less stressful and more comfortable onboard environment for the crew and passengers. The electrification of ship control systems enhances compatibility with IoT devices (sensors and communication devices). This helps address labor shortages by enabling increased labor efficiency through automated operations.

Space-Saving Design With Less Air Conditioning Equipment

The water-cooling system improves cooling efficiency compared to air-cooling systems, contributing to reduced size and space savings. Since the main exhaust heat from the equipment is cooled using water, the amount of onboard air conditioning equipment can be reduced.

System Configuration

Benefits of Implementation

(For a Battery-Powered Ship)
Your Ship Will Operate With Zero Emissions.

When operating 5 hours a day, CO2 emissions would be reduced by more than 554 tons per year (equivalent to about 45 cars).

Note:: This figure is based on our calculations for a 199 GT short-range ferry (662 kW propulsion power, fueled with A-type heavy oil).

It Serves as a Business Continuity Measure.

Power can be transmitted from the ship to land as an emergency power source in the event of a disaster.
A 1,000 kWh battery can supply the equivalent of approximately two months of household electricity consumption.

It Helps Enhance The Onboard Environment and Promote Workstyle Innovations.

Reduced noise and vibration help improve the onboard environment, while the increased labor efficiency supports workstyle innovations for the crew.

IMO GHG Reduction Strategy (Adopted in 2018)

Improve fuel efficiency by 40% or more by 2030 (compared to 2008 levels).
Reduce total emissions by 50% or more by 2050 (same as above).
Aim for zero emissions as early as possible within this century.

Relevant SDGs

Implementation Example

e-Oshima, Japan's first fully battery-powered autonomous ship (Oshima Shipbuilding Co., Ltd.)

Winner of the Ship of the Year Award 2019 (organized by the Japan Society of Naval Architects and Ocean Engineers)

Key Specifications

Total Length: Approx. 35 m
Electric Propulsion Motor: 220 kW × 2 units
B × D × d = 9.6 m × 3.8 m × 2.6 m
Maximum Ship Speed: 10 knots
Approx. 30 tons, approx. 340 gross tons
Battery Capacity: Approx. 600 kWh
Passenger Capacity: Up to 50 people
Azimuth propeller × 2 units
Vehicle Capacity: 1 large bus and 4 passenger cars, or 8 passenger cars
JG compliant; limited to calm waters (within 5 miles)

Electric Propulsion Ships Around the World (Examples)

Ship type	Sightseeing boats and water buses	Bunker ships for calm waters	Coastal cargo ships and tankers	Short-haul ferries	Tugboats (work vessels)
Gross tonnage	4.8	499	499	1,598	300
Propulsion power	45kW×1	300kW×2	300kW×2	450kW×2	1,500kW×2
Battery	Lithium ion 26kWh	Lithium ion 3,500kWh	Lithium ion 3,500kWh	Lithium ion 1,000kWh	Lithium ion 1,720kWh