This workshop was led by the Offshore Renewables Joint Industry Programme (ORJIP) and Annex IV and focused on management measures for ensuring that permitting of Marine Renwable Energy (MRE) devices could move forward in the face of uncertainty. Prior to the workshop, a list of management measures associated with specific interactions of MRE devices with the marine environment was circulated to the participants. Twenty-six invited participants, including researchers, regulators, and developers, spent the day examining and contributing to the management measures that are available to the industry and regulators.