The RuleCheck mobile application was developed to support Port State Control Officers (PSCOs) and users from national authorities carrying out coast guard functions in the EU Member States. The mobile application contains all the rules and procedures which apply to ships to be inspected, based on the ship type, age and other ship particulars that can be included by the user. The system has been enhanced and maintained multiple times to ensure that Port State Control Officers (PSCOs) in different regional agreements on port State control (MoUs) are able to properly apply the relevant rules to ships, notwithstanding the complexities contained in the various International Conventions ensuring an easy access to the Convention references supporting the deficiencies reported during inspections. The availability of International Maritime Organisation (IMO) and International Labour Organisation (ILO) documents as well as EU legislation and easy accessibility of their content leads to improvements in the effectiveness and consistency with which inspections are carried out in all countries which operate under a Port State Control regional agreement. The content of the RuleCheck mobile application is the same with the version that users can access through EMSA’s portal and includes the following functionalities: Check Deficiencies Tree View My Ship Tree Word Search Prospective My Ship EU This application can only run online. Disclaimer: Although reasonable precautions have been taken to ensure that the information contained in this database are accurate and complete, EMSA cannot accept responsibility for any loss, damage or harm arising for the use of the information contained herein.