NYK Group has unveiled what it states is Japan’s first fully battery-driven work vessel. The e-Crea was built by NYK Group company Keihin Dock at the Koyasu Shipyard.
Classified by the Japan Craft Inspection Organization (JCI), the vessel has a breadth of approximately 3m, a depth of 1.7m and a crew capacity of up to 14 persons. It is intended to be used to support tugboat docking, undocking and vessel movement.
Its name is derived from ‘electricity’ (e) and the Latin word ‘creare’ (to create), reflecting Keihin Dock’s slogan of “create, construct and enjoy’ and is pronounced ‘éclair’, in reference to the vessel’s visual resemblance to the French pastry.
Measuring approximately 9m in length, e-Crea consolidates all essential equipment within its compact hull. This design enables maneuverability in confined spaces, making it suited for assisting with docking operations and vessel movement at shipyards.
Battery charging propulsion system
Powered solely by batteries charged from shore facilities at the Koyasu Shipyard, e-Crea operates without emitting carbon dioxide. Additionally, the vessel is said to be quieter than conventional ships running on fossil fuels, which reduces operational noise.
Following the installation of the electric propulsion system, including battery modules in the hull, the vessel’s weight exceeded initial projections. To maintain proper balance, the team reconfigured equipment placement and cabling, thereby optimizing internal space and ensuring safe, stable navigation.
To effectively manage heat, the team implemented multi-layered water-cooling systems and integrated air ducts. Enhancements to the battery room included fireproofing measures and protection against hazardous gases, along with improved ventilation. These measures ensure the vessel upholds robust safety standards.
NYK Group says that data and insights gained from e-Crea’s construction and operation will be reflected in the development of an electric-propulsion tugboat scheduled for completion in December 2026.
In related news, NYK recently entered into a shipbuilding contract with Maehata Shipbuilding Corporation for the construction of a new restaurant ship. Click here to read the full story