As the Port Security Officer (PSO) in the port of Rotterdam, the Harbour Master is the authority for security in the entire port on behalf of the Mayor. To keep the risk of security incidents to a minimum, security rules apply in the port of Rotterdam. These rules are set by the International Maritime Organisation (IMO) in the International Ship and Port Facility (ISPS) Code. The security measures set out in the code have been included in the European Regulation 725/2004. The ISPS Code is mandatory for ships engaged on international voyages:
- passenger ships, including high-speed passenger craft;
- cargo ships, including high-speed craft of 500 gross tonnage or more; and
- drill units; and
- port facilities serving vessels engaged on international voyages.