Viking Line Unveils Concept for World’s Largest Electric Passenger-Car Ferry

June 14, 2025
  • Viking Line has introduced the concept of HELlOS, the world’s largest (according to press release) fully electric passenger-car ferry.
  • Developed in partnership with Rauma Marine Constructions, Åbo Akademi University, and KONE.
  • Will operate on the Helsinki–Tallinn route, a crossing of just over two hours.
  • Capacity: approximately 2,000 passengers and a mix of passenger vehicles and freight.
  • Powered by 85–100 MWh batteries, enabling fully emission-free operations.
  • Designed with lightweight construction, efficient hull, and advanced propulsion to optimise energy use.
  • Part of the FIN-EST Green Corridor initiative, with a targeted launch in the early 2030s.
  • If realised, HELIOS will be a global benchmark for climate-smart short sea shipping.

Viking Helios concept ferry

  • Length: Approx. 195 m
  • Width: Approx. 30 m
  • Power source: Electricity (100%)
  • Battery capacity: 85–100 MWh (charging power requirement >30MWh)
  • Speed: Approx. 23 knots
  • Passengers: Approx. 2,000
  • Private cars: Approx. 650
  • Cargo capacity: Approx. 2,000 freight metres

Source: https://news.cision.com/viking-line-abp/r/viking-line-conceptualizes-the-world-s-largest-electric-passenger-car-ferry,c4159134