The International Telecommunications Union (ITU) has updated its advice to vessels worldwide to clarify that all passenger vessels and cargo vessels of 300 GT and upwards engaged on international voyages that have GMDSS installed must also ensure they have an up to date copy of ITU List IV on board in order to be SOLAS compliant. This is in addition to the requirement for vessels to carry ITU List V.  The full ITU text is provided below for your reference.

Failure on the part of these vessels to carry these titles may result in PSC deficiencies and detentions.

List IV – List of Coast Stations and Special Service Stations

List IV contains important information for the mariner in relation to radiocommunications, including the GMDSS (Global Maritime Distress and Safety System). Detailed information such as the frequencies for transmitting and receiving, in addition to geographical coordinates, is provided for maritime coast radio stations, including those assuming watch-keeping using digital selective calling (DSC) techniques and radiotelephony.

List IV also supplies details of additional services such as medical advice, navigational and meteorological warnings, MSI (Maritime Safety Information), AIS (Automatic Identification System), meteorological bulletins and radio time signals, along with the hours of service and operational frequencies, information on port stations, pilot stations, coast Earth stations, VTS stations, contact information of RCC (Rescue Coordination Centers), SAR agencies, Navarea coordinators and AtoNs (AIS Aids to Navigation).

As stipulated in Appendix 16 to the RR, this List shall be provided to all ship stations for which a Global Maritime Distress and Safety System (GMDSS) installation is required by international agreement.

Edition 2017, now available. Next new edition expected: October 2019.