[JB] [JB] CPT-100 transducer bottom paint

[Jules - Raymarine - Moderator]

Hello Dave,

Welcome to the Raymarine forum,

To stop marine growth you do need to use bottom paint on any parts that are permanently in the water.

Here is an extract from Airmar - transducer manufacturers

"Anti-fouling Paint
Surfaces exposed to salt water must be coated with anti-fouling paint. Use water-based anti-fouling paint only. Never use ketone-based paint, since ketones can attack many plastics possibly damaging the transducer. Reapply anti-fouling paint every 6 months or at the beginning of each boating season."

There are a few options that slipway operators may have as well.

Hope this helps

Happy boating and kind regards
Jules