The Simrad ES38-7 is a wide band split beam transducer designed for fishery and fishery research applications.
The beamwidth is 7 degrees at nominal operational frequency 38 kHz. The transducer is designed with three separate segments, and includes a sensor to measure the sea temperature.
The transducer is normally mounted flush with the hull plating or the bottom of a blister. It is provided with an installation flange, and by means of a clamping ring it is secured to a mounting ring welded into the hull plating or the bottom of a blister. The clamping ring is provided with the transducer, and already fitted. The transducer can also be flush mounted at the bottom of a drop keel.
The transducer cable penetrates the hull using a stuffing tube and a cable gland.