In periods of reduced visibility or whenever a vessel operator needs to signal his or her intentions or position, a sound-producing device is essential.
| If on State Waters |
| Less than 26 feet long (includes PWCs) |
None required, but highly recommended |
| 26 feet long or longer |
Whistle, horn, or other sound signal required |
| If on Federally Controlled Waters |
Less than 65.6 feet long
(includes PWCs)
|
Whistle or horn audible for at least one-half mile required |
| 65.6 feet long or longer |
Whistle or horn and a bell audible for at least one mile required
|
Some common sound signals that you should be familiar with as a recreational boater are as follows.