Viking Line conceptualizes the world’s largest electric passenger-car ferry

By Marek Grzybowski
Viking Line has announced that it is preparing to launch a completely zero-emission service on the Helsinki-Tallinn route. This is to be proof that a green maritime corridor through the Gulf of Finland can be launched on longer routes. Let us recall that in Finland, electric ferries designed in Poland and built at the CRIST shipyard sail on shorter routes.
The introduction of a large passenger ferry is another step towards decarbonizing shipping in the Baltic Sea. There is a chance that Polish shipyards could participate in this process, as they were the first electric ships that are successfully operated in the fjords of Norway and on ferry connections in Finland, as well as on the Thames. The electric ship market is developing dynamically and Polish shipyards are playing a significant role in this area.

Local content Made in Finland
Viking Line assumes that the project can be implemented as early as the early 2030s. The project’s conceptual assumptions have been given the name Helios. According to the operator, it would be the largest unit of its kind in the world. It is assumed that the electric passenger and car ferry between Helsinki and Tallinn will carry around 2,000 passengers, and the cargo line will be around 2,000 m long.
The conceptual assumptions for the Helios ship have already been developed by Viking Line’s offices. It has been assumed that sailing on the planned route will be possible thanks to battery packs with a capacity of around 85–100 megawatt-hours. This should be enough to complete the cruise across the Gulf of Finland in just over two hours. The length of the concept ship has been designed at 195 meters. Its width has been determined at 30 meters. It is assumed that the main engines should provide a speed of around 23 knots. With the aforementioned length and width of the ship, the cargo space of the car decks may be around 2 kilometers. The Helios will have the silhouette of a typical ro-pax, and will be distinguished mainly by the lack of a chimney.
The shipowner also took care to ensure local content. The Helios is the result of research cooperation between Viking Line and the Rauma shipyard and other partners operating mainly in Finland. The concept was designed specifically for the Helsinki–Tallinn ferry service. The battery-powered ship should easily cover 80 kilometers, or 43 nautical miles. According to the operator and the design office, this connection is ideal for introducing electric ship cruises. The electric ship will be charged while docked. It was determined that to cover approximately 45 nautical miles, the battery batteries will need over 30 megawatt-hours to charge.
It should be emphasized that the most environmentally friendly car-passenger ferry was built for the Finnish operator in the Finnish shipyard. The M/F Aurora Botnia is equipped with the latest ecological technology. The ship is much more environmentally friendly than current requirements, making it the world’s first car-passenger ferry to meet Clean Design criteria. Aurora Botnia can sail between ports on electric power. The ferry, built for a Finnish shipowner and operated by WASALINE, is an example of how Finns care about local content.

Rauma Marine Constructions
Helios heralds a new era
– Helios heralds a new era in maritime transport, just like the first sailing, steam and motor ships did in their time. The concept proves that emission-free maritime transport on a large scale is no longer a utopia – said Jan Hanses, CEO of Viking Line, when announcing the launch of the project. In his opinion, “The world’s largest fully electric passenger and car ferries could be in operation as early as the beginning of the next decade. We are strongly committed to the ambitious vision that Helios represents.”
The operator emphasizes that Viking Line has been developing its activities towards low-emission shipping for a long time, investing hundreds of millions of euros in groundbreaking technologies. Viking Grace, delivered in 2013, was the world’s first passenger ship to use both liquefied natural gas and biogas as fuel. In 2022, Viking Grace will be coupled with an even more climate-friendly ship, Viking Glory.
Thanks to these investments in ships, passengers on Viking Line’s routes can now choose biofuel for an additional fee, reducing emissions from their journey by 90%. In addition, the first Viking Line customers have signed agreements for the use of biofuel.
Emission-free shipping in the Gulf of Finland is supported by the FIN-EST Green Corridor project, initiated by the cities of Helsinki and Tallinn. The project is also initiated and participated in by the ports of Helsinki and Tallinn, the Estonian Ministry of Climate, Viking Line, Rederi AB Eckerö and Tallink Grupp.

M/F WASALINE with 80% Finnishlocal content. Source: WASALINE
Cities and Seaports Green Cooperation
– It is great that both cities and their ports have committed to creating a green maritime corridor. Electric shipping is not only possible through investments in ships. It also requires efficient, reliable charging infrastructure in ports. The home port for the new electric ships would be Jätkäsaari, where the Port of Helsinki is implementing a development and expansion program until 2032. Progress in the implementation of this project is extremely important for our own plans, emphasizes Jan Hanses.
It is noted that the majority of passenger and cargo traffic from the Port of Helsinki is directed to Estonia. According to the Port of Helsinki forecasts, passenger traffic between the Western Port and Tallinn will increase from 5.5 million passengers in 2024 to 11.6 million by 2040. The volume of cargo is also expected to increase significantly.
– The Helsinki-Tallinn route performed particularly well [in terms of MG traffic] last year and we believe that volumes will continue to grow, says Jan Hanses. In his opinion, “there is a great demand for connections between Finland and the Baltic countries.
The operator believes that “EU emissions trading fees and stricter regulations are putting an increasing burden on fossil fuel-based maritime traffic”. Therefore, zero-emission technology would enable increased capacity on this route through the Gulf of Finland. Hanses emphasizes: “Our goal is to order two electric ships for this route, which would double our current capacity all year round”,
The concept of an electric passenger and car ferry announced at the beginning of June is the basis for further planning of the connection and an invitation to tender for the shipyard. This spring, Viking Line submitted an application for project funding to the EU Innovation Fund. The aim is to obtain funds for the construction of the ferry.

Viking on a sustainable course
Viking Line celebrated the 50th anniversary of its Helsinki-Stockholm route last year. Since its launch, the line has served 45 million passengers. Last autumn, Viking Line reached another impressive milestone. Since the launch of passenger transport 60 years ago, a quarter of a billion people have been transported on its ships.
Viking Line has consistently developed its commitment to implementing sustainable maritime transport. In early 2024, conferences on the seas were launched on ships sailing to Turku, “resulting in a reduction of greenhouse gas emissions from conference travel by around 90%”.
From spring 2025, the offer of sustainable conference cruises will be available on all routes and ships. The shipowner emphasizes in the annual report that “The green maritime corridor projects between Turku and Stockholm and between Helsinki and Tallinn also continue to advance. For more than a year, Viking Line passengers on the Turku-Stockholm route have been able to buy biogas to compensate for the amount of fuel used during the journey, which reduces emissions from passenger journeys by up to 90%.
Viking Line’s earnings for the 2024 financial year were in line with the forecast given to the market after the third quarter of last year, but weaker than in the record year 2023. Sales amounted to EUR 109.5 million. Income before tax amounted to EUR 3.7 million (EUR 1.8 million in 2023). Income after tax totaled EUR 3.5 million (EUR 1.5 million in 2023).

Conceptual assumptions of the electric ro-pax Helios
Length: approx. 195 m
Width: approx. 30 m
Power source: electricity (100%)
Battery capacity: 85–100 MWh (required charging power >30 MWh)
Speed: approx. 23 knots
Passengers: approx. 2,000
Private cars: approx. 650
Load line: approx. 2,000 meters
