16 deg FWD and AFT, 21.5 deg port and STB. This transducer can be mounted (turned) 90 deg for a larger/longer fish arch. You can also pair this transducer with the CA28F-8. This combination will provide a wide and narrow directional pattern, as well as a combined 4 kW of transmitted power into the water. This combination is good for Tuna, Marlin and Sailfish. Pair with a 150 kHz sonar for less interference.