EU Registries and their functions are fundamental elements of the EUETS ETSdesk has high expertise in opening and handling all types of accounts ifor all types of installaitons in all Europeran Registries. Particularly for Maritime sector on which EU ETS will apply to all vessels calling at any port of 22 “sea facing ” EU countries, plus Iceland and Norway. The fundamental entity that EU ETS will be connected to is the Union Registry and the country in Europe where the ship management company is based. This country will be the Administering Authority (AA) in the context of EU ETS Legislation. For the non-EU-based Management companies, whose vessels in 2024, will call for the first time during the last four years in European ports, the AA remains fundamental in a more critical manner as in many cases, this will be assigned at the end of the “MRV/EU ETS” year.