CV20020 INFOMAR seabed mapping survey took place in August/September 2020 in the North East Atlantic Ocean, off the coast of Ireland and in the Celtic Sea on board the RV Celtic Voyager. The aims of the survey were to . 1. Undertake a Multibeam Echo Sounder (MBES) hydrographic survey to International Hydrographic Organisation (IHO) Order 1A standard in depths less than 100 m and Order 2 in areas deeper than 100 m. 2. Produce bathymetry, shaded relief and backscatter mosaic products to provide depth, seabed features and seabed hardness/roughness information. 3. Acquire Sub Bottom Profiler (SBP) data of the shallow (up to 30 m) sub seabed to determine the existence of buried objects and ascertain the sub-seabed character. 4. Acquire magnetometer data to investigate the sub seabed geology and provide information on manmade seafloor debris. 5. Map in detail and provide hydrographic wreck reports on any wrecks. 6. Film a documentary for a TV programme titled Lighthouses of Ireland. INFOMAR is a Irish Department of Communications, Climate Action and the Environment (DCCAE) funded joint programme between the Geological Survey Ireland and the Marine Institute, surveying our unmapped marine territory and creating a range of integrated mapping products of the physical, chemical and biological features of the seabed.