Good find MV !!! "The department recently equipped a patrol boat with a state-of-the-art Coda Octopus sonar system, purchased six months ago through a $650,000 Homeland Security grant. The device paints a 3-D picture of what's below the bay."
He differentiates between the UIS sonar and the wide area sonar typically used by the U.S. Navy. The primary differences are in how the Coast Guard uses the system, precision and the ability for shallow water operations. The UIS detects and locates objects within millimeters. In addition, it operates in waters as shallow as two feet.