Study on flag State responsibilities and 'open registers' for vessel registration 26 January 2026Our team of experts contributed to the European Commission–funded study on open registries; the study is available via the Publications Office of the European Union (https://op.europa.eu/en/publication-detail/-/publication/33987074-f030-11f0-8d3c-01aa75ed71a1/language-en), and the annex is available via DOI (10.2926/8440014). We thank the Commission officers and external experts for their fruitful cooperation.