Trøndelag fylkeskommune and AtB would like, in cooperation with the level Vidar Hop AS (hereafter called the Contracting Authority) to carry out a retrofit of hydrofoil on Vidar Hop AS ́s vessel MS Namdalingen.The contracting authority would like to implement a procurement with two main deliveries: - The vessel shall be equipped with a battery package that can be charged from land and contribute to progress Tenderers will be left as a total supplier and must the system. The contracting authority intends to reduce energy consumption by 20-25% and a reduction in climate and environmental emissions by 20 - 30 %. The contracting authority has a fixed budget for the execution of the project. The funds can be relocated between different phases, but not increased. See the attached Input Document for further information.