NYK Launches Japan’s First Fully Battery-Powered Work Vessel ‘e-Crea’

NYK has introduced e-Crea, the first fully battery-powered work vessel built in Japan, signaling a major step forward in the country’s maritime decarbonization efforts. Constructed by Keihin Dock Co. Ltd., a subsidiary of the NYK Group, the vessel was developed at the Koyasu Shipyard in Yokohama and is intended to support tugboat operations such as docking and undocking—without relying on any onboard diesel power..

Designed without an onboard diesel generator, e-Crea is powered entirely by batteries that are charged from shore-based facilities. It will be used to support docking and undocking operations for tugboats at the shipyard. This launch is part of NYK’s broader initiative to implement next-generation technologies and support the global transition to low- and zero-emission shipping solutions.

The name “e-Crea” combines “electricity” and the Latin word creare, meaning “to create,” aligning with Keihin Dock’s philosophy of “Create, Construct, and Enjoy.” Pronounced “éclair,” the vessel’s shape is said to resemble the French pastry.

Key Features and Capabilities

1. Emissions-Free Operation
e-Crea runs exclusively on electric propulsion, producing zero carbon emissions during operation. In addition to being environmentally friendly, the vessel operates with significantly reduced noise levels compared to conventional diesel-powered workboats.

2. Compact, Agile Design
At approximately nine meters in length and three meters in breadth, e-Crea is built for maneuverability in confined spaces such as shipyards. The compact hull houses all essential systems, enabling efficient support for harbor activities.

Engineering Innovations

The development team addressed several technical challenges during the vessel’s construction. The installation of large battery modules resulted in higher-than-expected weight, prompting a redesign of internal layouts and cable placements to maintain hull balance. To manage heat generated by the batteries and motors, the vessel incorporates a combination of water-cooling systems, air ducts, and fireproofing enhancements, ensuring both performance and safety.

Looking Ahead

NYK views e-Crea as a testbed for future electric propulsion systems. Data collected from the vessel’s operations will contribute to the development of an electric tugboat scheduled for completion in December 2026. The company believes such vessels will play a key role in decarbonizing not only ship-level operations but also broader port logistics.

Vessel Specifications

Name: e-Crea
Length Overall: ~9.0 meters
Breadth: ~3.0 meters
Depth: ~1.7 meters
Crew Capacity: Up to 14 persons
Primary Use: Tugboat support and vessel movement
Propulsion: Fully electric (shore-charged batteries)
Builder: Keihin Dock Co. Ltd.
Operator: Keihin Dock
Owner: NYK
Classification: Japan Craft Inspection Organization (JCI)