Manufacture and transfer of a ferry with a battery-supported, diesel-electric drive system. The ship will have a vehicle deck with three lanes and a load capacity of 120 tons.

Stadtverkehr Lübeck GmbH (SL) operates local public transport in Lübeck and the surrounding area, as well as the Priwall ferries. The company currently employs around 500 people and, together with Stadtwerke Lübeck Holding GmbH and Stadtwerke Lübeck GmbH, is one of the largest employers in Schleswig-Holstein. Stadtwerke Lübeck Holding GmbH is 100% shareholder. The subsidiary of the city traffic is the Lübeck-Travemünder Verkehrsgesellschaft mbH.

In order to increase the efficiency of the Priwall ferries, the procurement of a third wagon ferry is the subject of this tender. A modern and environmentally friendly ferry is to be built to cross the Trave between Travemünde and the Priwall.

The current ferry service between the banks of the Trave is carried out by the existing ferry ships MS "Pötenitz" and MS "Travemünde". The ferries each have a passenger capacity of 300 passengers and a loading capacity of 18 cars or 12 plus 2 trucks of 45 t each. Furthermore, pedestrians, cyclists and wheelchair users, etc. can be left and right of the lanes during the crossings. There is barrier-free access.

The future-proof drive system should be a battery-supported, diesel-electric system, with the battery systems serving as the main energy supplier for 2 electric Voith-Schneider propellers. The automated recharging of the battery systems takes place via a diesel generator while driving or lying down, whereby the daily operating time of the diesel generator is around 50% of the daily operating time of the ferry.

At the same time, a conventional shore charging option is provided by means of a cable connection, via which the battery systems can also be charged during the night. For the optional, future integration of a pantograph system, connection options should be provided on the starboard side of the ship. Photovoltaic systems will also be installed on board the ferry, which will support the generation of electrical energy on board or feed electrical subsystems.

The ferry concept to be implemented has as a capability feature both the preparation for hydrogen-based energy generation and energy generation based on synthetic methane. It should be possible to convert the ship's energy generation to either fuel cells or a generator with a hydrogen combustion engine. In the same way, the future use of synthetic, CO2-neutral methane is also being discussed.