Data supplied by contracting parties to OSPAR (North East Atlantic), HELCOM (Baltic Sea), and Barcelona and ACCOBAMS (Mediterranean Sea, Black Sea). The data are collated nationally from registers of licenced events such as pile driving, controlled explosions from naval operations and other activities that release energy. This registry is specifically purposed with supporting OSPAR and HELCOM in providing information that will feed their regional assessments, and in reporting by its contracting parties to MSFD descriptor 11.1.1 (Low and mid frequency impulsive noise). HELCOM and OSPAR impulsive noise events registry is hosted and managed by ICES (http://ices.dk/marine-data/data-portals/Pages/underwater-noise.aspx), ACCOBAMS impulsive noise event registry is hosted @ http://accobams.noiseregister.org. EMODnet Physics is integrating and distributing the different sources (www.emodnet-physcs.eu)