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Simrad 18-11

The Simrad 18-11 is a single beam transducer mainly designed for fish finding and bottom mapping applications.


The circular beamwidth of the ES-18 is 11 degrees at nominal operational frequency 18 kHz. The transducer uses 44 "tonpilz" elements.

Due to its low frequency, the Simrad 18-11 is ideal for use with deep water measurements. Maximum range is approximately 7000 meters.

The transducer is normally mounted flush with the hull plating or the bottom of a blister. The incorporated clamping ring is used to secure the transducer body to a mounting ring. The mounting ring is welded into the hull plating. The transducer can also be flush-mounted in the same manner at the bottom of a blister or a drop keel.

The transducer cable penetrates the hull using a cable gland. This cable gland consists of a bushing, washers, a rubber gasket and a packing nipple.

Key specifications

  • Frequency: 18 kHz
  • Circular beamwidth: 11 ±2 degrees
  • Cable length: 20 metres
  • Weight (in air, with cable): 85 kg

Technical specifications

End-user documentation and installation drawings

Order information


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