Marine Communication Best Practices
Clear VHF radio habits help other boaters, marinas, bridge tenders, and rescue services understand you fast when conditions get busy or stressful.
Before buying more gear, make sure the radio plan works
A good communication setup includes a working VHF radio, charged handheld backup, clear channel plan, MMSI/DSC setup where available, and a crew that knows when to use Mayday, Pan-Pan, and Sécurité.
Core communication rules
Listen first
Pause before transmitting. Make sure the channel is clear and that you are using the correct channel for the call.
Keep it short
Say who you are calling, who you are, where you are, what you need, and “over.” Avoid long explanations on hailing channels.
Move off Channel 16
Use Channel 16 for distress, safety, and hailing. Once contact is made, move to a working channel when appropriate.
Give position early
In urgent or emergency traffic, provide latitude/longitude or bearing and distance from a known landmark as soon as practical.
Standard radio call format
- Name of vessel or station being called.
- Your vessel name.
- Your position if relevant.
- Your request or message.
- Proposed working channel if the conversation needs to continue.
- End with “over” and wait.
Example: “Harbor Master, Harbor Master, Harbor Master — this is vessel Bluefin. Request docking instructions. Over.”
Emergency and urgency calls
Mayday
Use for grave and imminent danger to life or vessel.
Pan-Pan
Use for urgent assistance when the situation is serious but not yet immediately life-threatening.
Sécurité
Use to broadcast important safety information, navigation hazards, weather warnings, or other safety messages.
DSC, MMSI, and GPS position
Modern VHF radios may support Digital Selective Calling. When the radio has a registered MMSI and GPS position, a DSC distress alert can transmit identity and position data before the follow-up voice call on Channel 16.
- Register and program the correct MMSI.
- Confirm GPS position is available to the radio.
- Know where the red distress button is, but do not test it casually.
- Follow manufacturer instructions and official guidance.
Common mistakes to avoid
- Talking too fast under stress.
- Forgetting vessel name or position.
- Using Channel 16 for casual conversation.
- Holding the microphone too far away or clipping the first word by speaking before the button is fully pressed.
- Depending on a phone alone instead of carrying a working marine radio.
Safety notice: This page is general informational content, not professional maritime training or emergency response instruction. Follow official Coast Guard guidance, NOAA advisories, local navigation rules, manufacturer instructions, and certified training. In an emergency, call for help on VHF Channel 16 or call 911.