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“e5 Tug” – Electric Tug Powered By Battery And Hydrogen Fuel Cell

Tokyo Kisen Co., Ltd. and e5 Lab Inc. have jointly developed the new concept design of “e5 Tug,” electric propulsion harbor tugboat powered by large-capacity battery and a hydrogen fuel cell.

The e5 Tug is a harbor tug fully electrified and designed to minimize environmental footprint.

The e5 Tug is equipped with a propulsion system running on “e5 powertrain platform”, devised and planned by e5 Lab, which utilizes a large-capacity battery system as a main power source and a hydrogen fuel cell and generator as the auxiliary power source.

This electric propulsion system will ensure sufficient bollard pull and continuous cruising time necessary for harbor tugboat which requires a large-capacity power to function. Furthermore, CO2 emission is minimized by incorporating fuel cell.

This joint project is drawing upon knowledge and experience of Tokyo Kisen as a tugboat operator and e5 Lab is undertaking concept planning / development, design, and project management.

We will proceed with the project by seeking advice from the Ministry of Land, Infrastructure, Transport and Tourism, ClassNK, and others for the regulatory compliance. After the final investment decision we aim to launch the tug for commercial operations at Yokohama Port and Kawasaki Port in 2022.

“e5 Tug” – electric tug powered by battery and hydrogen fuel cell Li-ion Battery + Hydrogen FC pure electric power train for e5 Tug

e5 tug outline

Type of vessel              Harbor tugboat
Operating area             Yokohama Port / Kawasaki Port
Propulsion                    2 x 1500kW azimuth thruster
Towing power               50 tons
Service speed              14 knots

Main features of e5 Tug

Environmental
performance
It reduces CO2 emissions in all operational phases such as push / pull, transit and standby (it can also be reduced on the basis of Well-to-Propeller measure).
Contribution at the time of  disasters It has a function of power supply from ship to shore in the event of a disaster and can be used as an emergency power source.
Future scalability Fully electrified powertrains can adopt the most suitable energy sources (lithium-ion batteryhydrogen fuel cell, all-solid-state battery, LNG generators, etc.) in accordance with technological progress.
In the future, it will be possible to achieve zero emissions on Well-to-Propeller basis in combination with renewable energy.

Source: Tokyo Kisen Co. Ltd.

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