Marine Two-Way Radios for Port and Offshore Use

Marine Two-Way Radios – A Safe Communication Solution at Sea

1. What is a marine two-way radio?

A marine two-way radio (marine radio) is a dedicated wireless communication device used on ships, boats, rescue vessels, and other watercraft. It operates mainly on the marine VHF frequency band (156 – 174 MHz), enabling crew members to communicate with seaports, control stations, other vessels, or rescue teams in emergencies.

2. Why use a dedicated marine two-way radio?

  • ✅ Clear, stable communication in harsh weather and heavy seas.

  • ✅ Water and dust resistance to IP67/IP68, keeping the device functional even if it falls into the sea.

  • ✅ Distress Signal mode for quickly sending an emergency signal to surrounding vessels.

  • ✅ Compliance with maritime safety regulations from the IMO and the Vietnamese Ministry of Transport.

3. Common types of marine two-way radios today

Handheld marine VHF two-way radios

  • Compact and convenient for small boats and speedboats.

  • High-capacity rechargeable battery for long operating time.

  • Easy to switch channels.

  • Examples: Kenwood NX-1200 M3, Hytera AP588…

Fixed-mount VHF two-way radios

  • Powered from the vessel’s 12V supply.

  • Detachable antenna, high output (45 W), long-range communication of 10–20 nautical miles.

  • Example: Kenwood NX-1700

Marine DSC (Digital Selective Calling) two-way radios

  • Automatically sends position and emergency alerts using an MMSI number.

  • GPS integrated, compatible with AIS systems.

  • Requires MMSI registration per regulations.

4. Criteria for choosing a marine two-way radio

  • International VHF standard frequency (ITU-R compliant).

  • Water resistance rated IP67 or higher.

  • Loud, clear audio, easy to use in strong wind or heavy rain.

  • Built-in GPS or external GPS connectivity.

  • Reputable brand, with warranty and available spare parts.

5. Some reputable marine two-way radio brands

  • Kenwood (Japan) – #1 market share for marine two-way radios worldwide.

  • Hytera (China) – Affordable and widely used.

6. Notes on using marine two-way radios in Vietnam

  • Set the correct international channel frequencies (Channel 16, 70, etc.) per ITU rules.

  • Required equipment for vessels ≥ 15 m is mandatory under maritime standards.

Conclusion

Whether you are a fisherman, ship captain, or port coordinator, a marine two-way radio is indispensable equipment for safe and effective offshore communication. Invest in the right type of device, make sure it meets standards, and choose one that fits your real-world needs.