On May 4th, 2022, in Lecce, Italy, a final GUTTA conference was held, and it was entitled: "The journey of a drop into the ocean of decarbonization". The first part of the Conference focused on the decarbonization of maritime transport, and the second part on the impact of the COVID-19 pandemic on marine traffic. A GUTTA Steering Committee Meeting was also held, and partners had the opportunity to discuss the project activities and challenges so far.