The regulatory requirements for registration of persons onboard passenger ships operating on domestic voyages do not prescribe mandatory reporting to the Irish Coast Guard (IRCG). The European Union (Registration of Persons Sailing on board Passenger Ships) Regulations 2019 require that such information must be lodged ashore with a passenger registrar, responsible for the transmission of information on persons who have embarked on a company passenger ship. In case of an emergency, this information is made available to the IRCG. New requirements for reporting are due to take effect by 20/12/23, whereby this information must either be submitted directly to the SafeSeasIreland web portal or be promulgated via a vessel’s Automatic Identification System (AIS).