Concept Harbor Tug Powered By Battery, Hydrogen Fuel Cell

Tokyo Kisen Co. Ltd. and e5 Lab Inc. have jointly developed a concept design for the “e5 Tug,” an 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 is designed to 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. Tokyo Kisen Co. Ltd. is a major tugboat company in Japan. Since the founding in 1947, the company has been consistently engaged in the operations of assisting navigational safety of ships throughout Tokyo Bay, the center of Japanese marine transportation, and one of the busiest sea traffic areas in the world.
e5 Lab Inc., Tokyo, is a shipping solution provider based on the electrification and digitization of ships. The company is working on completing an electric propulsion Tanker, “EV Tanker” of Asahi Tanker Co. Ltd. in 2021.