The GMDSS Manual 2024 Edition is an authoritative publication by the International Maritime Organization (IMO), offering a comprehensive guide to the Global Maritime Distress and Safety System (GMDSS). This manual is essential for maritime professionals, including ship personnel, shore operators, trainers, and regulators, providing detailed insights into the principles, equipment, and operational procedures of the GMDSS.

The 2024 edition incorporates the latest updates from the IMO’s modernization project completed in 2022, reflecting revisions to relevant SOLAS regulations and other IMO instruments related to the GMDSS. It covers the components of the GMDSS, carriage requirements, operational procedures, and detailed information on terrestrial and satellite-based radiocommunication systems. Additionally, it includes excerpts from SOLAS regulations, supporting IMO resolutions, the current GMDSS Master Plan detailing coastal infrastructure and services, and extracts from the ITU-R Radio Regulations providing the radio regulatory background.

This manual serves as a vital resource for ensuring effective maritime communication and safety, aligning with international standards and best practices.