StructureScan 3D gives freshwater and saltwater anglers a unique, three-dimensional view of fish, structure and bottom contours — making it easier to understand where fish and structure are located in relation to your boat. With StructureScan 3D, anglers spend less time searching for productive water and more time catching fish. StructureScan 3D requires a 3D module with transducer and a HDS Carbon or HDS Gen3 fishfinder/chartplotter display.