Japanese tugboat operator, Tokyo Kisen, and e5 Lab Inc, plan to commission an electric tug with a bollard pull of 50 tonnes for operation in Yokohama Port and Kawasaki Port.
The e5 Tug, which the partners hope to introduce for commercial operation in 2022, is a fully electric harbour tug equipped with a propulsion system running on the “e5 powertrain platform”. This uses a large-capacity battery as the main power provider and a hydrogen fuel cell and generator for auxiliary requirements.
The companies will seek regulatory and compliance approval from Japan’s Ministry of Land, Infrastructure, Transport and Tourism, the classification society ClassNK, and others.
The vessel, with two 1,500-kW azimuth thrusters, will have a service speed of 14 knots and its electric propulsion system, with minimal CO2 emissions, will have sufficient bollard pull and continuous cruising time for efficient harbour tugboat operation, the companies said.