Sea Vessel Commercial Ship - Motorola R5 Two-way radios
November 12, 2025
Commercial ships use two-way radios (both VHF and UHF) as their primary tools for internal and external communication, supporting safe and efficient operations throughout the vessel and with outside parties.
Internal Communication on Board
- Crew members use UHF two-way radios for short-range, on-board coordination, which is ideal for communication between the engine room, bridge, and various deck teams.
- UHF radios are effective for overcoming the metallic barriers and interference found inside ships, allowing instant updates on machinery, cargo handling, and routine maintenance.
- These devices are essential for everyday logistics, safety drills, emergency response, and special cargo operations, connecting departments such as galley, medical bay, and supply teams.
External Communication
- VHF radios are mandated for ship-to-shore and ship-to-ship communication, vital for navigation, port coordination, and emergency situations.
- VHF channels, such as Channel 16, are reserved for distress calls and international communication standards according to maritime regulations (like SOLAS), while others are assigned for safety messages and bridge-to-bridge operations.
- VHF radios can reach other vessels or coastal authorities up to 20–30 nautical miles away, facilitating external coordination for docking, cargo transfers, and entering ports.
Special Features of Marine Two-Way Radios
- Many commercial ships use digital radios with encryption, GPS tracking, and multiple channels to enhance operational security and efficiency.
- Radios are built to be rugged, portable, and, in some cases, explosion-proof for hazard areas.
- Modern systems often integrate repeaters to extend range and clarity, ensuring reliable communication in all ship zones.
Two-way radios ensure crew safety, support real-time decisions, and maintain smooth running of all operations on and around commercial ships, making them indispensable for maritime communication.
