Data outputs from MMO 1097 Modelled Mapping of Continuous Underwater Noise Generated by Activities project. The aim of this project is to produce indicative data for mapping the distribution of anthropogenic continuous underwater noise generated by activities in the south marine plan areas. The data and associated maps produced may inform a range of marine planning and decision making processes, and contribute to facilitating sustainable development in the marine environment. The output dataset is a 2kmx2km grid of modelled sound pressure level derived from typical values produced by categories of AIS (shipping more than 300,000gwt), VMS (fishing more than 12m) and EMS (dredging) data.