SusTunTech has participated in the “Energy efficiency for the fishing sector” session conducted by OPROMAR in Marín (Galicia) organized by ENERCOM project. From AZTI, aspects of legislation and regulation in energy efficiency in fishing were presented, as well as the ENERCOM project’s achievements and preliminary outcomes. In addition, case studies were presented, related to the energy efficiency, digitization and sustainability of the fishing fleet. Among others, SusTunTech project was presented and well-received from the audience as an example of digitalization and energy efficiency developments on board fishing vessels.