Wartsila to supply the hybrid propulsion system for two RoRo vessels

Wärtsilä has announced that it will supply an integrated hybrid propulsion system for two new hybrid vessels.

aThe ships are being built at the China Merchants Jinling (Weihai) Co., Ltd shipyard for the Swedish shipping company Stena RoRo. The vessels will be the world’s first methanol-fueled hybrid RORO vessels and will operate on the Stena Line Irish Sea system.

The combination of new sustainable fuels and electricity is in line with the company’s sustainable operations goal. Part of the order is booked by Wärtsilä in the second quarter of 2023, while the remaining order is booked in the third quarter of 2023.

Each vessel will be equipped with two Wärtsilä 32M multi-fuel engines now capable of operating on methanol fuel and with ammonia run-off. Wärtsilä will also supply the MthanolPac fuel storage, supply and control system, gearboxes, two controllable propellers (CPP), three forward thrust engines, the NACOS navigation system, three Wärtsilä 20 auxiliary engines and the hybrid electric system consisting of shore power . Batteries, shaft generators, inverters and transformers as well as the power management system make them work together.

Each vessel will also benefit from the Wärtsilä Hybrid Solution, optimizing fuel consumption today and allowing fully green operation in the future. The ships will also be equipped with the Wärtsilä shore energy solution that enables carbon-neutral operations when the ships are in port.

These vessels are a further development of our previous freighter concepts where priority is given to focusing on sustainability and future-proofing with multi-fuel combustion engines.

…said Westling, General Manager of Stena RoRo. “With the help of advanced Wärtsilä technology, we intend to have the most environmentally friendly Ro-Ro vessels on the market.”

Both Stena RoRo and Wärtsilä share the same commitment to decarbonizing shipping operations, and these vessels represent another step in this direction by being the first methanol hybrid vessels in their class.

…commented Roger Holm, Head of Wärtsilä’s Marine Energy Business.

As shown, the 147-meter-long ships will have a capacity of 2,800 meters and will be able to accommodate a total of 37 passengers and crew. Delivery is scheduled for June-November 2025. The Wärtsilä equipment will be delivered to the yard in 2024.

Wärtsilä has a strong relationship with Stena RoRo, and early in 2015 Wärtsilä converted the Stena Germanica to run on methanol fuel. The two companies are currently collaborating on a number of other Ro-Pax projects.

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