Aquatic growth can accumulate rapidly on a transducer's surface, reducing performance within weeks. Surfaces exposed to salt water
must be coated with anti-fouling
Use water-based anti-fouling
paint only. Never use ketone-based paint, since ketones can attack many plastics possibly damaging the sensor.
Airmar recommends brands such as MDR, Woolsey, Pettit, and Sea Hawk.
Never use spray paint on a transducer. Spraying incorporates tiny air bubbles, and a marine
transducer cannot transmit properly through air.