CP370 Digital Sonar Module. High-Performance Sonar Module for Offshore & Coastal Fishing. Digital Sonar Module. The CP370 delivers exceptional clarity, sharper fish targets, and automatic operation using Raymarine's next-generation ClearPulse digital sonar processing.. The CP370 boasts up to 1,000 watts of power and operates at 200kHz for inshore and 50kHz for offshore fishing.. ClearPulse signal processing intelligently manages the CP370 sonar parameters in all conditions so anglers can spend more time fishing and less time adjusting the sonar.. Sharper, Clutter Free Targets. Spend less time looking for fish and more time fishing. Smarter target intensity controls reveal bait and game fish with exceptional clarity. Enhanced digital filtering reveals fish targets through the entire water column. Spend less time looking for fish, and more time fishing. CP370 takes the guesswork out of interpreting the sonar display. Go Deeper. Next generation ClearPulse sonar. Up to 1,000 watts of power