Weather can change very rapidly and create unexpected situations for boat operators. Even meteorologists have trouble predicting rapid weather changes. You should always monitor weather developments. One way is to tune a VHF radio to the frequencies listed at the bottom of this page.
These are the most commonly used VHF channels on the waters of the United States.
| Channel # |
Purpose of Channel |
| Channel 6 |
Intership safety communications only |
| Channel 9 |
Communications between vessels (commercial and recreational), and ship to coast (calling channel in designated USCG Districts). |
| Channel 13 |
Navigational use by commercial, military, and recreational vessels at bridges, locks, and harbors. |
| Channel 16 |
Strictly for distress and safety calls to U.S. Coast Guard and others, and to initiate calls to other vessels; often called the “hailing” channel. (Some regions use other channels as the hailing channel.) When hailing, contact the other vessel, quickly agree to another channel, and then switch to that channel to continue conversation. |
Channel 22 |
Communications between the U.S. Coast Guard and the maritime public, if directed by the U.S. Coast Guard. Severe weather warnings, hazards to navigation, and other safety warnings are broadcast on this channel. |
Channels 24-28 |
Public telephone calls (to marine operator) |
| Channels 68, 69 and 71 |
Recreational vessel radio channel and
ship to coast |
| Channel 70 |
Digital selective calling “alert channel.” |