[CA] [CA11] CP370 Transducers

[Chuck - Raymarine - Moderator]

Welcome to the Raymarine Forum Donald,

If using a CP370, the E66075 2kW R99 thru hull transducer (will only be driven at 1kW by a CP370) would typically be recommended for this application. That said, 2kW power would be recommended for reliably sounding these depths. For MFDs compatible with such, a CP570 Professional CHIRPâ„¢ Sonar Module and compatible a 2kW or 3kW through hull CHIRP transducer (ex. R109 LH or R509 LH) would typically be recommended for those fishing in 4000' to 5000' depths.