propagation the movement of sound through a medium. Related Articles: Ship Quieting TechnologiesDOSITS WebinarsTutorial: Sound Levels at Distance and DepthCommercial Vessel TrafficSound SpreadingSound Speed MinimumHow is sound used to transmit data underwater?Why does sound get weaker as it travels?Pile drivingHow are sounds made? Chris Knowlton2017-09-29T15:29:34-05:00