Finding and exploring hydrothermal vents at the Mid-Atlantic Ridge was the objective of a scientific crew sailing on RV “Meteor” in April 2016 which had kindly asked FIELAX to support. A colleague of us attend the cruise, mapped wide areas of the deep sea ridge structures with the ship’s multibeam echosounder and processed the data to maps. He also processed and managed acquired photography and navigation data from the MARUM’s ROV “Quest” in order to quickly get overview maps and results to support cruise planning and documentation. The contractor was Prof. Dr. Nicole Dubilier from Max Planck Institute for Marine Microbiology in Bremen.