The PROMINENT project co-funded under the H2020 program aims to develop innovations in inland waterway transport. It focusses on several areas: a) the introduction of technologies to improve energy efficiency and to reduce pollutant emissions, b) certification and (on-board) monitoring and c) professional qualification. This publication focusses on the possibilities of digital solutions and on-board monitoring in order to evaluate the operational performance of vessels and to develop tools for the skipper for energy-efficient navigation. An on-board monitoring measures speed and location, fuel consumption, power distribution, NOx and CO2 emissions. This data is continuously sent to a central database for the evaluation and benchmarking. It can also be used to optimize the efficiency of the ship driveline. The digital solution for efficient navigation combines on-board monitoring with the information from river models in order to provide the skipper with up to date information on sailing speed, arrival time and fuel consumption on each trip.