An official website of the State of Oregon
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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. Know the rules for meeting head-on, crossing, and overtaking situations. The sound producing device may be a whistle, horn, or bell that is audible for 1/2 mile. All vessels on state and federally controlled waters must have a sound producing device to communicate.
Make way for large commercial vessels -who will sound their horns to boaters to move out of the main shipping channel.
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