On August 28, 2019 Holger Mahnke passed away unexpectedly for all of us. As the President of the German Institute of Navigation (DGON) he was together with Prof. Dr. Jürgen Beyer responsible for the organization and preparation of the European Navigation Conference (ENC) 2020. The sad circumstance of his death has led us to look for changes in the program commission in general. Our colleagues Prof. Dr. Christoph Günther and Prof. Dr. Michael Meurer have thankfully agreed to jointly take over as new conference chairs. Mrs. Dr. Evelin Engler will continue to actively support them. DGON uses this opportunity to express our sincerest thanks to Prof. Dr. Beyer, who has decided to step down from the chairmanship, for the support he has already provided in the preparation of this important conference.