• Choose a location away from interference caused by power and radiation sources such as: the propeller(s) and shaft(s), other machinery, other echosounders, and other cables. The lower the noise level, the higher the echosounder gain setting that can be used.• Choose a location with a minimal deadrise angle, so the transducer beam will be aimed at the bottom.• Choose an accessible spot inside the vessel with adequate headroom for the height of the housing, tightening the nuts, and removing any insert (see the table below).