The ETSI EN 300 338 series is a harmonised standard applicable to equipment using Digital Selective Calling (DSC) in maritime radio services in the VHF, MF and HF bands. It is developed by ETSI and defines technical requirements and test methods to ensure that DSC equipment operates correctly within the GMDSS framework and complies with international regulations (IMO, ITU and SOLAS).
The series consists of several parts, where Part 1 serves as a common foundation defining general requirements, functions and measurement methods. The other parts specify different types of DSC equipment, such as Class A, D, E, H and M, as well as functions for integration and remote control in modern ship systems.
Parts 1 to 8 (versions published 2026‑04, with EN 300 338‑1 V1.7.0 as the latest common part) are now published.
The purpose of the series is to ensure reliable distress alerting, reduce interference and guarantee interoperability between equipment in the maritime radio environment.
You can find the documents here:
EN 300 338‑2 V1.6.0 – Class A DSC
EN 300 338‑3 V1.4.0 – Class D DSC
EN 300 338‑4 V1.3.0 – Class E DSC
EN 300 338‑5 V1.4.0 – Handheld VHF Class H DSC
EN 300 338‑6 V1.4.0 – Class M DSC
EN 300 338‑7 V1.2.0 – Implementation of Bridge Alert Management (BAM) in DSC radio equipment
EN 300 338‑8 V1.2.0 – Enabling DSC radio equipment with remote control capabilities
All feedback and comments are welcome by 15 July 2026.
