The study will require the realisation of four different albeit intimately associated tasks: ∑ compilation of the existing knowledge on energy consumption and energy efficiency on board fishing vessels, collection of new, detailed information by fishery (mÈtier) and by type of vessel compilation of current technological solutions to improve energy efficiency analysis of the information gathered, so as to provide fishing operators with a guide to assess the practical consequences, especially the economic ones, of adopting different alternatives to increase energy efficiency.