http://www.legislation.gov.uk/eur/2019/1239/chapter/VRegulation (EU) 2019/1239 of the European Parliament and of the Council of 20 June 2019 establishing a European Maritime Single Window environment and repealing Directive 2010/65/EURegulation (EU) 2019/1239 of the European Parliament and of the CouncilRegulation (EU) 2019/1239 of the European Parliament and of the Council of 20 June 2019 establishing a European Maritime Single Window environment and repealing Directive 2010/65/EU2020-12-12King's Printer of Acts of Parliamenthttps://webarchive.nationalarchives.gov.uk/eu-exit/https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:32019R1239texttext/xmlen2019-06-20 CHAPTER V <Strong>COORDINATION OF THE EMSWe ACTIVITIES</Strong> National coordinators Article 18 Each Member State shall designate a competent national authority with a clear legal mandate to act as a national coordinator for the EMSWe. The national coordinator shall: act as the national contact point for users and the Commission for all matters relating to the implementation of this Regulation; coordinate the application of this Regulation by the competent national authorities within a Member State and their cooperation; coordinate the activities aiming at ensuring the distribution of data and the connection with the relevant systems of competent authorities as referred in point (c) of Article 5(3). Multi-annual Implementation Plan Article 19 In order to facilitate the timely implementation of this Regulation and to provide quality control mechanisms and procedures for deploying, maintaining and updating the harmonised interface module and the related harmonised elements of the EMSWe, the Commission shall adopt, and revise on a yearly basis, following appropriate consultations of Member States’ experts, a Multi-annual Implementation Plan which shall provide: a plan for the development and updating of the harmonised reporting interfaces and the related harmonised elements of the EMSWe over the following 18 months; a plan for the development of the common addressing service by 15 August 2024; indicative dates for consultation with relevant stakeholders; indicative deadlines for the Member States for the subsequent integration of the harmonised reporting interfaces with the maritime National Single Windows; indicative deadlines for the Commission’s development of a common addressing service following the implementation of the harmonised reporting interface module; testing periods for Member States and declarants to test their connections with any new versions of the harmonised reporting interfaces; testing periods for the common addressing service; indicative phasing-out deadlines for the older versions of the harmonised reporting interfaces for the Member States and declarants.