Ruter plans a pilot project to test and evaluate zero emission passenger vessels in Oslo fjord. The aim is to obtain experiences with new technology, operational conditions, energy consumption, infrastructure needs and customer perspectives as a basis for the further development of sea-based public transport. Through this prior information notice (PIN), Ruter wishes to inform the market of a planned procurement for practical testing of relevant vessel concepts. A request for tender (RFP) for time-limited test and demonstration activities is expected to be published during autumn 2026. This PIN is only meant as prior information to the market and it is neither a competition, a request for tenders or a prequalification. Further processes will be carried out in accordance with the public procurement regulations.