Having tackled the north to south crossing of the Atlantic from Greenland to the Azores, we arrived on Ile de Flores Island in August 2017 with our two Autonomous Surface Vehicles (ASVs), Hektor and Igor. The aim of the second part of the expedition was to investigate the problem of plastic pollution in the Azores Archipelago, and our ASVs ability to detect and collect marine litter. The Azores archipelago is located in the northeastern Atlantic Ocean about 1,500 km from the