GMDSS Radio Log Book shall be used on following ships engaged in international voyages:
- Cargo ships of 300 GT and above
- All passenger ships
The following records in GMDSS Radio Log Book shall be made:
- a summary of distress, urgency and safety radio communications
- important incidents relating to radio services
- the position of the ship at least once a day
- a summary of the condition of the radio equipment and tests performed thereof.