Blue Heron Marine Technology

Confused by all the terminology used for marine transducers? Not sure what CHIRP is, or beamwidth, or diplexing, or the difference between a fishfinder transducer and an NMEA 2000 depth transducer? Our new book explains everything about marine transducers in a simple and complete way so that you can make an informed decision about which model is right for your boat. Click on the image to buy it now at