Wärtsilä announced that it will supply main engines for two new pusher tugs being built for AMAGGI, marking another step toward lower-emission inland shipping in Brazil.
The vessels are under construction at the Beconal shipyard in Manaus and are designed with decarbonised operations in mind. Notably, the engines can operate on biodiesel, a capability that played a decisive role in the contract, which was booked in the fourth quarter of 2025.
Designed for biodiesel operations
Each tug will be fitted with two Wärtsilä 20 engines, delivering a combined output of 2,100 kW. Importantly, the engines can switch between conventional diesel and biodiesel, giving operators flexibility while cutting overall greenhouse gas emissions.
In addition, the vessels will include a Wärtsilä Data Collection Unit. This system supports continuous monitoring, improves reliability, and helps extend overhaul intervals.
Supporting large-scale river transport
Once delivered from August 2026, each tug will be able to push up to 20 barges. Together, these barges can carry around 32,000 tonnes of grain along the Amazon inland waterway system, a critical logistics corridor for Brazilian exports.
AMAGGI already operates a river fleet of more than 200 barges and pusher vessels. Moreover, the company has worked with Wärtsilä for over three decades, focusing on efficient and sustainable river transport solutions.
Long-term partnership and decarbonisation focus
This project also reinforces a shared commitment to lower-carbon shipping. By running entirely on biodiesel, the new vessels are expected to reduce emissions while maintaining operational performance on long river routes.
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Source: Wärtsilä Corporation
