Mystic Cruises contracted TecnoVeritas for the environmental update in February 2021, to install five SCR (Selective Catalytic Reactor) systems one for each engine to reach emissions levels below TIER III (designed by TecnoVeritas and H+H) therefore ensuring exhaust gas emissions treatment in any of her operation mode. Operation performance, through digitalization, was also deployed by TecnoVeritas, connecting the vessel to shore through the BOEM cloud platform. BOEM allows the real-time monitoring of all ship operational parameters, including engine emissions. A new sewage treatment plant with a capacity of 650 m3/day was also installed, approved for Baltic Sea operation, therefore compliant with MEPC.227 (65) including section 4.2 nitrogen and phosphorus removal standard. A Slick hull paint was applied so that a reduction in consumption of 3% is expected.