Multibeam bathymetry raw data was recorded in the North Atlantic during cruise M170 that took place between 2021-01-11 and 2021-02-10. The data was collected using the ship's own Kongsberg EM 122. This data is part of the DAM (German Marine Research Alliance) underway research data project. For the transit towards the working area around the Oceanographer and Hayes Transform Faults no dedicated sound velocity profile has been used. Instead a profile from a previous cruise to the Atlantic Ocean has been used. In the working area a XBT sound velocity profile has been taken at the start of the survey, which was used for the transit back.