In Memoriam Professor Andrzej Orłowski (1947–2020)

Professor Andrzej Orlowski, a long-time employee of National Marine Fisheries Research Institute, passed away on October 27, 2020. He was an outstanding scientist in the field hydroacoustics. Inventor method use multiple echo measurements to assess type seabed. To this day, is called Orlowski Method. member Physics Section SCOR, NMFRI Scientific Council, Polish Acoustical Society, ICES Fishery Acoustic Science and Technology Group, Fish Behavior Working SG Seabed Classification Avoidance Vessels.