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 channels listed below.
The most commonly used VHF channels on U.S. waters are:
| Channel # |
Purpose of Channel |
| 6 |
Intership safety communications. |
| 9 |
Communications between vessels (commercial and recreational), and ship to coast. |
| 13 |
Navigational use by commercial, military, and recreational vessels at bridges, locks, and harbors. |
| 16 |
Distress and safety calls to U.S. Coast Guard and others, and to initiate calls to other vessels. |
| 22 |
Communications between the U.S. Coast Guard and the public. Severe weather warnings, hazards to navigation, and other safety warnings are broadcast on this channel. |
| 24-28 |
Public telephone calls (to marine operator). |
| 68, 69, and 71 |
Recreational vessel radio channels and ship to coast. |