Hamburg-based Lehmann Marine has secured the largest contract in its history with the supply of high-capacity battery systems for three new fully electric ferries being built for HADAG Seetouristik und Fährdienst. The vessels will form the first all-electric additions to HADAG’s fleet and play a key role in the Port of Hamburg’s plan to decarbonise its urban water transport network.

The ferries are under construction at SET Schiffbau- und Entwicklungsgesellschaft Tangermünde, with delivery scheduled for 2028. Each of the new Type 2030e vessels will measure roughly 30 metres in length and eight metres across the beam, carrying up to 250 passengers. Propulsion will be powered entirely by Lehmann Marine’s CUBE energy storage system, installed with a total capacity of 3.8MWh per vessel.

The modular CUBE system is already in service on several commercial and passenger vessels worldwide. Lehmann Marine designed it around a scalable, maintenance-friendly architecture to simplify integration and servicing while maintaining the highest safety standards. Its lithium iron phosphate (LFP) cell chemistry is a central factor in that safety performance, offering strong thermal stability and eliminating the fire risk associated with traditional nickel-manganese-cobalt (NMC) batteries. In extreme conditions, LFP modules release only inert gas, which can be safely vented outside the vessel — a crucial operational advantage for port service vessels.

Alexander Lehmann, Managing Director of Lehmann Marine, said the HADAG project demonstrates how proven battery technologies can enable reliable, zero-emission ferry operations even under the demanding duty cycles of port service. Lars Köhler, Head of Sales, added that electrification has moved beyond being a technical option, becoming a decisive step in improving air quality and reducing noise for residents and visitors in busy harbour zones.

By selecting Lehmann Marine as its technology partner, HADAG and SET are aligning around a shared objective: to show that large-scale electrification of urban maritime transport is both achievable and commercially viable.

Lehmann Marine is part of the Sunlight Group, a global supplier of industrial energy storage systems. The company’s expertise in modular LFP battery design underpins its presence in advanced maritime electrification projects across Europe and beyond.

Click here to read the latest issue of E-Mobility Engineering.