Sound Signal Law and Legal Definition

According to 33 CFR 67.01-5 (Title 33 - Navigation And Navigable Waters; Chapter I - Coast Guard, Department Of Homeland Security; Subchapter C - Aids To Navigation; Part 67 - Aids To Navigation On Artificial Islands And Fixed Structures; Subpart 67.01 - General Requirements), the term sound signal shall mean “the audiable sound signal, authorized as a private aid to navigation, to mark a structure for the safety of marine commerce whenever the visibility has been reduced by fog, mist, rain, falling snow, smoke, dust, or other phenomena.”