It is important that your transducer is installed correctly. Incorrect installation of the transducer will affect signal and prevent you from gathering accurate data.
For optimum depth and vegetation detection, transducers should be in direct contact with the water. However, some thru-hull transducers may give robust depth readings on bottoms with no vegetation.
After the transducer is installed, take note of the depth of the transducer below the water surface. This depth (usually about 12-18 inches) can be used to adjust the entire set of the bottom depth and vegetation biovolume data after initial processing in BioBase EcoSound. A positive offset will increase the overall depth of the contours and volume calculations when the correct transducer depth is applied. Refer to Data offset for more details.