The world’s largest electric ship sets sail from South America

Choppy water, a packed timetable and thousands of people to shift every day: the Rio de la Plata is about to gain a striking new arrival.

The debut of a giant battery-powered ferry linking Argentina and Uruguay offers a glimpse of how rapidly short‑sea shipping could evolve-well away from the louder debates around cars and aircraft.

South America’s new electric sea giant: Hull 096 on the Rio de la Plata

On 14 December 2025, Hull 096-a 130‑metre all‑electric ferry constructed by Incat Tasmania for South American operator Buquebus-successfully completed its first sea trials. The run took place off Australia, yet its working life is set for the Rio de la Plata, operating the busy shuttle between Buenos Aires (Argentina) and Colonia del Sacramento (Uruguay).

Its job is straightforward: carry passengers and cars at speed, with low noise, and without consuming any fuel oil.

Hull 096 is the largest 100% battery‑electric ship ever built, designed to carry about 2,100 passengers and more than 220 vehicles.

Built from lightweight aluminium, the vessel measures 130 metres in length and uses a broad beam to maximise capacity while still keeping spaces comfortable. The design has been pushed to extremes: generous internal volumes, expansive glazing, and a commercial deck that sets a new benchmark for ferries.

A Buquebus ferry designed around the passenger experience

Buquebus operates one of the region’s most heavily used short crossings. The passenger mix is varied-business commuters, holidaymakers and local residents-crossing a wide estuary rather than open ocean. That operating reality has shaped Hull 096 from the outset.

• Rapid port turnarounds to maintain a tight timetable.
  
• Spacious lounges and retail zones to generate revenue on every sailing.
  
• Vehicle decks laid out for quick embarkation and disembarkation.
  
• A lightweight structure to keep energy demand manageable.
  

One feature is particularly notable: the ship will include the largest commercial area ever installed on a ferry, effectively turning a 90‑minute trip into something closer to a floating shopping centre. For Buquebus, the shops, bars and services are central to funding the sizeable electrical systems required on board.

Forty megawatt‑hours at sea: the battery system behind Hull 096

The biggest change sits out of sight below deck. Hull 096 runs solely on electricity supplied by more than 250 tonnes of lithium‑ion batteries. In total, 5,016 modules are distributed across four dedicated battery rooms, delivering over 40 MWh of stored energy.

The energy carried on board is around four times greater than the largest maritime battery systems that had previously been in service.

That battery capacity powers eight electric waterjets. Rather than diesel engines driving conventional propellers, high‑output electric motors drive jets at the stern, providing strong acceleration and confident handling-useful in the constrained approaches to Buenos Aires and Colonia.

Fast crossings, fast charging

The ferry is expected to complete the Buenos Aires–Colonia crossing in roughly 90 minutes, following a demanding pattern: rapid passage, a brief stop in port, then straight back again. The charging solution has been engineered to keep pace with that rhythm.

Each battery module is air‑cooled via a dedicated fan, helping to maintain performance through repeated high‑power use. At both terminals, shore facilities are planned to recharge the vessel in about 40 minutes between sailings. That indicates multi‑megawatt charging-comparable to the electricity demand of a small town, concentrated into well under an hour.

From the grid’s standpoint, loads of this scale typically require dedicated substations, carefully timed charging windows and, in many cases, local storage or buffering to prevent instability. In South America, building this kind of shore‑side capability could become a catalyst for additional upgrades at ports along coastal and river networks.

An additional benefit of high‑power shore charging is operational flexibility: if terminals later add renewable generation or stationary batteries, the route could increasingly be supplied with lower‑carbon electricity without altering the vessel itself-making the all‑electric ferry a platform that can improve as the energy system decarbonises.

Why Hull 096 changed course from LNG to batteries

Hull 096 was not originally conceived as a battery ship. The project began-under the name China Zorrilla-with liquefied natural gas (LNG) propulsion in mind, which a decade ago was widely seen as a cleaner “bridge fuel” for shipping.

Buquebus and Incat later shifted to full electrification. That decision reflected mounting climate expectations, volatile fuel prices and the increasing availability of large-scale maritime battery systems. The pivot has also allowed Incat Tasmania to present itself as a specialist in high‑precision electric ferries at a time when shipyards are under pressure to deliver real low‑carbon vessels rather than concept renders.

For the first time, a ship of this size and speed will run a commercial service using battery power alone, producing zero direct emissions.

Incat founder Robert Clifford called the sea trial a “turning point for shipbuilding”, arguing that large, fast passenger ships on short and medium routes no longer need combustion engines.

Maritime emissions under pressure

Shipping produces roughly 3% of global greenhouse gas emissions. Most ships still burn heavy fuel oil, among the dirtiest outputs of oil refining. Regulators are increasingly demanding climate cuts from operators, as well as reductions in sulphur, nitrogen oxides and particulate pollution-especially near ports.

Hull 096 tackles direct emissions directly: no main engines, no exhaust stacks and no marine diesel. The total climate benefit will depend on how electricity is generated in Argentina and Uruguay, but local harbour pollution should drop substantially. Reduced vibration and lower noise can also change the feel on board for both passengers and crew.

A growing club of electric ships-now at a new scale

Hull 096 is part of a longer story. The vessel builds on around a decade of pilots and early commercial deployments across Norway, China and Europe. The difference today is the sheer scale of the battery system and the passenger capacity involved.

Vessel	Country	Type	Year	Main record	Battery capacity
Hull 096	Australia / South America	Passenger ferry	2025	Largest 100% electric ship	> 40 MWh
Ampere	Norway	Ferry	2015	First fully electric commercial ferry	≈ 1 MWh
Yara Birkeland	Norway	Container ship	2021	First electric, autonomous cargo vessel	≈ 7 MWh
E‑Ferry Ellen	Denmark	Ferry	2019	Longest all‑electric crossing (22 nautical miles)	4.3 MWh
Yangtze electric cargo	China	River cargo	2023	Largest electric river freighter	≈ 20 MWh

Norway’s Ampere demonstrated back in 2015 that a battery‑only ferry could maintain an all‑day fixed service. Later, the autonomous Yara Birkeland showed that short‑range container transport could be electrified. Meanwhile, China already operates electric river cargo vessels moving thousands of tonnes with batteries measured in the tens of megawatt‑hours.

Hull 096 raises the bar again. With more than 40 MWh on board, it exceeds the battery capacity of many recent electric and hybrid ferries and pushes electric propulsion beyond the “small coastal shuttle” category towards fast, high‑volume regional links.

Risks, trade‑offs and what comes next for Hull 096

A step change like this brings new technical and commercial scrutiny. Battery installations at this scale demand sophisticated fire detection and suppression, resilient thermal management, and careful separation from passenger spaces. Insurers and classification bodies pay close attention to how shipyards design, integrate and verify systems of this complexity.

The economics are equally challenging. Large maritime battery packs remain costly, and shore charging equipment for a high‑throughput terminal can reach tens of millions of dollars. Buquebus will aim to recover those costs through reduced fuel spending, less maintenance (with fewer moving parts), and increased on-board revenue enabled by the enlarged retail footprint.

The real measure of Hull 096 will not be its first sea trial, but whether the business case stands up over a decade of daily operation.

For passengers, the change may be immediate and practical. Short‑sea ferries often arrive close to city centres; removing exhaust fumes and engine rumble can improve waterfront air quality and make terminals more pleasant places to spend time.

A further consideration-still evolving across the sector-is battery end‑of‑life. Operators planning for long service periods increasingly need clear routes for refurbishment, second‑life use and recycling of large lithium‑ion packs, alongside training and procedures that ensure crews and port staff can manage high‑voltage systems safely.

Why short routes accelerate the move to electric

Predictable, repeatable services such as Buenos Aires–Colonia are ideal for battery vessels. The operator can forecast distance, speed requirements and charging windows with precision. For engineers, that makes it more straightforward to size the batteries, design cooling systems and plan grid connections.

Longer ocean passages still point towards other low‑carbon options-green methanol, ammonia or advanced biofuels-because battery mass and volume remain limiting factors for full‑electric propulsion at sea. Even so, every new electric project strengthens the supply chain: improved cells, safer housings, more efficient power electronics and more standardised charging interfaces.

Hull 096 underlines how quickly the learning curve is steepening. Ten years ago, a 1 MWh maritime battery made headlines. Now South America is preparing to welcome a ferry carrying over 2,000 people across a busy estuary with more than 40 MWh on board-without burning a single litre of marine fuel.