This recent article on IEEE Spectrum website details the vessel known as “Hull 096,” built by Incat Tasmania in Australia, which claims the title of the world’s largest battery-electric ship. Its battery system comprises over 5,016 lithium-ion cells, organized into 12 arrays of 418 modules each, spread across four rooms and producing some 40 megawatt-hours (MWh) of storage, about four times the capacity of any existing electric ship.
The vessel uses electric propulsion via eight axial-flow water jets powered by permanent-magnet motors supplied by Wärtsilä. Currently undergoing sea trials, the ship is expected to operate as a ferry between ports in South America. It is being charged in Tasmania, where the grid runs on ~100% renewable energy, making its early operations carbon-free.
A key engineering challenge is thermal management: the battery banks weigh approximately 250 tons and require module-level air-cooling, per-cell monitoring, and thermal-runaway suppression systems. For marine and systems engineers, this project offers a landmark case study in scaling electric mobility for large vessels: it showcases real-world integration of high-capacity energy storage, power-dense electric drives, and renewables-ready charging infrastructure. The significance extends beyond ferries, the same technologies could apply to cargo ships, offshore supply vessels, or navies pursuing emission-reduction goals.
In conclusion, Hull 096 doesn’t just push the limits of battery capacity at sea, it signals a transformation in how we power large marine platforms, combining renewable grids, electric propulsion, and volumetric storage to redefine maritime sustainability.