THE VTS (VESSEL TRAFFIC SERVICE) IS A SYSTEM AIMED AT INCREASING THE LEVEL OF SAFETY OF MARITIME NAVIGATION, INCREASING THE EFFICIENCY OF PORTS AVOIDING NEGATIVE CONSEQUENCES TO THE MOBILITY WITHIN THEM, WHILE REDUCING THE RISK OF MARITIME ACCIDENTS AND THE CONSEQUENT DANGERS TO HUMAN LIFE AT SEA AND THE MARINE ENVIRONMENT DUE TO THE POSSIBLE RELEASE OF POLLUTANTS. THEREFORE, THE VTS, IN ADDITION TO REPRESENTING A SYSTEM CAPABLE OF RAISING THE LEVEL OF SAFETY OF MARITIME NAVIGATION, THROUGH THE INCREASE OF PORT EFFICIENCY, PROMOTES A MORE ADEQUATE MANAGEMENT OF THE PROCESSES UNDERLYING THE ACCESS OF SHIPS THUS CONTRIBUTING TO THE REALISATION OF THE NATIONAL MARITIME SINGLE WINDOW. IN THIS CONTEXT, A TECHNOLOGICAL MODERNISATION PROCESS HAS BEEN LAUNCHED TO ENSURE ALIGNMENT WITH THE NEW SW DEVELOPMENTS FORESEEN IN THE PHASE 2 VTS, WHICH NECESSARILY ALSO AFFECTS THE LOCAL SUBSYSTEMS OF THE LESSER REGIONS.