The Atlantic Ocean Research Alliance (AORA) between Canada, the European Union and the United States was launched by the signatories of the Galway Statement on Atlantic Ocean Cooperation in May 2013. This dataset is bathymetry data that was collected on various surveys from 2015 to 2018 on the Celtic Explorer during transits across the Atlantic Ocean, primarily from St. John's Newfoundland, Canada to Galway, Ireland. The data contributes to the Seabed Mapping key area of the AORA project, which aims to map the remainder of the Atlantic Ocean. The bathymetry data is collected using a deep water multibeam sonar system called a Konsberg EM302.