The China Zorilla ferry, the world's largest electric aluminum ferry, was launched by Buquebus in August 2026. This ferry, which is 130 meters long and 30.5 meters wide, can carry up to 2,100 people (including crew) and 226 vehicles at a service speed of 25 knots. The construction of this ferry was undertaken by Incat in Hobart, Tasmania, and is known as Hull 096.
Development of Electric Ferry Design
The creation of electric ferries has now become a global trend. Ferry operators around the world are seeking alternative solutions to reduce greenhouse gas emissions and noise, especially in ports and coastal areas. The growing demand for sustainable tourism has reinforced this trend. According to forecasts, the market share of electric multi-hull ferries will reach 68% by 2026.
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Multi-hull ferries significantly reduce operational costs due to their lightweight and high energy efficiency. These ferries can easily operate on busy routes that require multiple trips per day. Additionally, the natural stability of these ferries in rough seas enhances passenger comfort.
Challenges of Battery Installation in Electric Ferries
The electric propulsion system of the China Zorilla ferry is supplied by Wärtsilä, and four lithium-ion battery systems with a capacity of 10.29 megawatt-hours from Corvus Energy have been installed. This ferry operates twice daily on the 30 nautical mile (56 kilometers) route between Buenos Aires and Colonia del Sacramento, charging its batteries at each end of the route. Each charging cycle takes about 95 minutes.
The choice of batteries instead of liquefied natural gas (LNG) tanks and related equipment was a strategic decision by Buquebus. This change helped reduce the weight and draft of the vessel and allowed the operator to focus on environmental benefits such as zero emissions and near-zero noise and vibration.
DNV's experience in design and safety for large battery systems contributed to the success of this project. This ferry required significant leaps in battery scale that exceeded existing standards. The collaboration between Incat and DNV in this project led to the formation of a new and advanced ferry that can be introduced as a model in the maritime transport industry.
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