Echo Antifoul paint is used to antifoul the transducer of a sonar fish finder or depth sounder (echo sounders).
Instructions for the fitting of echo sounders indicate that normal antifoul should not be used on the transducer because: 1. Solvents damage the transducer. 2. Electrical conductivity of the paint reduces the signal. 3. Traditional thick antifoul reduces signal strength.
Echo is 1. Water based. 2. Contains no copper. 3. Produces a thin film and therefore minimises the impact on the transducer.