All vessels must follow area-specific GMDSS rules:
Area 1 – Coastal VHF + DSC
Area 2 – Includes MF Radios & Watch Receivers
Area 3 – Requires Inmarsat C, MF/HF + DSC/NBDP
Regulations differ by Gross Tonnage (GRT) and sailing area.
Annual inspections ensure functional and certified systems.
Cargo Ships:
VHF Radios with DSC
NAVTEX Receiver
Satellite EPIRB (406 MHz)
Reserve Power with Automatic Charging
Annual Radio Surveys for Compliance
Passenger Ships:
Dual VHF DSC Radios
GMDSS Alarm Panels
Public Address Systems
NAVTEX and EPIRBs
Shore-Based Maintenance Plans
These are international standards that require ships to maintain reliable onboard communication equipment for safety and navigation.
The International Maritime Organization (IMO) and SOLAS (Safety of Life at Sea) convention mandate these requirements globally.
The Global Maritime Distress and Safety System is a set of protocols and equipment that ensures ships can communicate distress alerts across all sea areas.
Yes, NAVTEX receivers are required to automatically receive navigation and weather warnings in designated sea areas.
An Emergency Position-Indicating Radio Beacon (EPIRB) sends distress signals to satellites when activated, helping rescue operations locate the ship.
Yes, all sea-going vessels must have VHF radios equipped with Digital Selective Calling for automated distress and communication functions.
The vessel may be fined, detained, or restricted from operating until the communication systems meet the required standards.
Annual radio surveys verify that communication systems onboard function correctly and comply with international regulations.
Long-Range Identification and Tracking (LRIT) is a satellite-based system that monitors ship locations and movements for safety and security.
Yes, most tests and surveys, including APT and radio checks, are performed while the vessel is in port to minimize disruption.