Protecting the ocean against the litter is becoming a global concern and there is a growing need worldwide for more efficient, clean and autonomous technologies to identify and collect marine detritus, especially plastics, in a systematic and repetitive way. GTS is an agile and innovative start-up that operates in the field of environmental protection and blue growth economy. GTS has developed a unique approach to attack the marine litters problem through intelligent systems driving the operation of unmanned air and water vehicles that autonomously identify and collect floating plastic wastes in the sea. Artificial intelligence is the engine of the systems that elaborate effective strategy to recover floating waste through the use of autonomous air and sea unmanned vehicles operating under a collaborative swarm approach. The use of HPC makes it possible to tackle a computational problem that GTS met during its service for recovery plastic litter in sea: optimizing the plastic litter recovery strategy forecasting the position of hundreds of detritus floating in the sea with suitable accuracy in space and time.